Commit Graph

120890 Commits

Author SHA1 Message Date
Aaro Koskinen 377de399a1 MIPS: Octeon: device_tree_init: don't fill mac if already set
Don't fill MAC address if it's already set. This allows DTB to
override the bootinfo.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12589/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:42 +02:00
Aaro Koskinen 43349b9e4b MIPS: Octeon: device_tree_init: use separate pass to fill mac addresses
Use separate pass to fill MAC addresses. This is needed because we want
to do this also for the appended DTB.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12588/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:42 +02:00
Aaro Koskinen 1a1590ab1a MIPS: Octeon: Use model string from DTB for unknown board type
Use model string from DTB for board type if the board is unknown.
This is more informative, e.g. with EdgeRouter Pro the /proc/cpuinfo
will display "ubnt,e200 (CN6120p1.1-1000-NSP)" instead of misleading
"Unsupported Board".

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: David Daney <ddaney.cavm@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12582/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:42 +02:00
Aaro Koskinen 8f2068bc9e MIPS: Octeon: Initialize system type string after device tree init.
Initialize system type string after device tree init.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: David Daney <ddaney.cavm@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12583/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:42 +02:00
Aaro Koskinen 6ecffafe24 MIPS: Octeon: board_type_to_string: return NULL for unsupported board
Return NULL for unsupported board.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: David Daney <ddaney.cavm@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12581/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:41 +02:00
David Daney 490f7548cf MIPS: OCTEON: Simplify code in octeon_irq_ciu_gpio_set_type()
Use the trigger type passed in to the function instead of reading it
back out of the irq_data.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12501/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:41 +02:00
David Daney c6d2b22eb5 MIPS: OCTEON: Add SMP support for OCTEON cn78xx et al.
OCTEON chips with the CIU3 interrupt controller use a different IPI
mechanism that previous models.

Add plat_smp_ops for the cn78xx and probing code to choose between the
two types of ops.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12499/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:41 +02:00
David Daney ce210d35bb MIPS: OCTEON: Add support for OCTEON III interrupt controller.
Add irq_chip support for both IPI and "normal" interrupts of the CIU3
controller.  Document the device tree binding for the CIU3.

Some functions are non-static as they will be used by follow-on
support for MSI-X.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: devicetree@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12500/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:41 +02:00
David Daney 9bc2223995 MIPS: OCTEON: Don't attempt to use nonexistent registers on OCTEON III models.
Attempts to read the nonexistent registers results in bus errors.
Either use registers that exist, or don't do the access as appropriate.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12502/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:40 +02:00
David Daney 182a6d1cd3 MIPS: OCTEON: Add model checking support for cn73xx, cnf75xx and cn78xx
Follow on patchs need to be able to distinguish the new models.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12498/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:40 +02:00
David Daney 2df11221bd MIPS: OCTEON: Add register definitions for cn73xx, cnf75xx and cn78xx.
These new members of the OCTEON III family have some new registers,
update some of the definitions for use in follow on patches.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12497/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:40 +02:00
David Daney 1d2753a66a MIPS: Select CONFIG_HANDLE_DOMAIN_IRQ and make it work.
Per the subject, always select HANDLE_DOMAIN_IRQ, and implement
set_irq_regs() so that it actually works.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12496/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:40 +02:00
David Daney 2253e0b9d9 MIPS: OCTEON: Remove some code limiting NR_IRQS to 255
Follow-on patches for OCTEON III will increase the number of irqs to
potentially more than 256.

Increase the width of the octeon_irq_ciu_to_irq to int to be able to
handle this case.  Remove the hacky code that verified that u8 would
not be overflowed.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12495/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:39 +02:00
David Daney 7d52ab163c MIPS: OCTEON: Extend number of supported CPUs past 32
To support more than 48 CPUs, the bootinfo structure grows a new
coremask structure.  Add the definition of the structure and add it to
struct cvmx_bootinfo.  In prom_init(), copy the new coremask data into
the sysinfo structure, and use it in smp_setup().

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12319/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:39 +02:00
David Daney 58546e3b73 MIPS: OCTEON: Remove dead code from cvmx-sysinfo.
Get rid of the long unused code.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12318/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:39 +02:00
David Daney b8c8f66507 MIPS: Add CPU identifiers and probing for Cavium CN73xx and CNF75xx processors.
Add new processor identifiers for Cavium CN73xx and CNF75xx
processors, and probe for them in cpu-probe.c

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12311/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:38 +02:00
Ralf Baechle 34ae8e3688 MIPS: highmem: Turn flush_cache_kmaps into a no-op.
It was calling flush_cache_all() which is a no-op since a long time anyway
and which was overkill in the old days when it was actually doing something
because only the D-cache needs to be flushed, never the I-cache, never
the S-cache.  Since however highmem on MIPS is still only supported on
processors that don't suffer from cache aliases, we could turn
flush_cache_kmaps() into a no-op - but for paranoia's sake we rather make
it BUG_ON(cpu_has_dc_aliases()).

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:38 +02:00
Ralf Baechle 429365b2a1 MIPS: Loongson64: Remove call to flush_cache_all().
flush_cache_all() is a nop and loongson 3 is fully coherent.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:38 +02:00
Ralf Baechle a48ac3a131 MIPS: VR41xx: Use __flush_cache_all instead of flush_cache_all.
It's probably a good idea to flush caches before reset and by the time
this code was written flush_cache_all did actually still do something.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:38 +02:00
Ralf Baechle 7c8196fd43 MIPS: MSP71xx: Use __flush_cache_all instead of flush_cache_all.
Flushing caches is probably sensible on reset but flush_cache_all has been
a no-op for a very long time.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:38 +02:00
Ralf Baechle 9329c154e4 MIPS: Octeon: Use __flush_cache_all instead of flush_cache_all.
flush_cache_all will go away.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:37 +02:00
Alban Bedel 81424d0ad0 MIPS: ath79: Use the reset controller to restart OF machines
Don't set _machine_restart() on OF machines as the reset driver
now provides a system restart handler.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12235/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:37 +02:00
Alban Bedel b3f0a250d6 MIPS: ath79: Add zboot debug serial support
Reuse the early printk code to support the serial in zboot. We copy
early_printk.c instead of referencing it because we need to build a
different object file for the normal kernel and zboot.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12234/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:37 +02:00
Alban Bedel ea3a7085bf MIPS: ath79: Remove the builtin DTB support
Now that appended DTB is usable we can drop the builtin DTB support.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12231/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:37 +02:00
Alban Bedel 8f4d4d1bfb MIPS: ath79: Add support for DTB passed using the UHI boot protocol
This is needed for bootloader supporting UHI and to support appended
DTB.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Felix Fietkau <nbd@openwrt.org>
Cc: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Gabor Juhos <juhosg@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12230/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13 14:01:37 +02:00
James Hogan 32eb6e8bee MIPS: Netlogic: Fix CP0_EBASE redefinition warnings
A couple of netlogic assembly files define CP0_EBASE to $15, the same as
CP0_PRID in mipsregs.h, and use it for accessing both CP0_PRId and
CP0_EBase registers. However commit 609cf6f229 ("MIPS: CPS: Early
debug using an ns16550-compatible UART") added a different definition of
CP0_EBASE to mipsregs.h, which included a register select of 1. This
causes harmless build warnings like the following:

  arch/mips/netlogic/common/reset.S:53:0: warning: "CP0_EBASE" redefined
  #define CP0_EBASE $15
  ^
  In file included from arch/mips/netlogic/common/reset.S:41:0:
  ./arch/mips/include/asm/mipsregs.h:63:0: note: this is the location of the previous definition
  #define CP0_EBASE $15, 1
  ^

Update the code to use the definitions from mipsregs.h for accessing
both registers.

Fixes: 609cf6f229 ("MIPS: CPS: Early debug using an ns16550-compatible UART")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Acked-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13183/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:05 +02:00
Joshua Kinard 128639395b MIPS: Adjust set_pte() SMP fix to handle R10000_LLSC_WAR
Update the recent changes to set_pte() that were added in 46011e6ea3
to handle R10000_LLSC_WAR, and format the assembly to match other areas
of the MIPS tree using the same WAR.

This also incorporates a patch recently sent in my Markos Chandras,
"Remove local LL/SC preprocessor variants", so that patch doesn't need
to be applied if this one is accepted.

Signed-off-by: Joshua Kinard <kumba@gentoo.org>
Fixes: 46011e6ea3 ("MIPS: Make set_pte() SMP safe.)
Cc: David Daney <david.daney@cavium.com>
Cc: Linux/MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/11103/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:05 +02:00
Ralf Baechle 05490626d5 MIPS: Move definitions for 32/64-bit agonstic inline assembler to new file.
Inspired by Markos Chandras' patch.  I just didn't want do pull bitsops.h
into pgtable.h.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
References: https://patchwork.linux-mips.org/patch/11052/
2016-05-09 12:00:05 +02:00
James Hogan 92e9953c58 MIPS: Fix MSA assembly warnings
Building an MSA capable kernel with a toolchain that supports MSA
produces warnings such as this:

arch/mips/kernel/r4k_fpu.S:229: Warning: the `msa' extension requires 64-bit FPRs

This is due to ".set msa" without ".set fp=64" in the non doubleword MSA
load/store macros, since MSA requires the 64-bit FPU registers (FR=1).
Add the missing fp=64 in these macros to silence the warnings.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13063/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:05 +02:00
James Hogan 143e93d74e MIPS: Fix MSA assembly with big thread offsets
When lockdep is enabled on a 64-bit kernel the FPR offset into the
thread structure exceeds the maximum range of the MSA ld.d/st.d
instructions. For example THREAD_FPR31 = 4644 (instead of 2448), while
the signed immediate field is only 10 bits with an implicit multiply by
8, giving a maximum offset of 511*8 = 4088.

This isn't a problem when the toolchain doesn't support MSA as the
ld_*/st_* macros perform the addition separately into $1 with [d]addui
which has a 16bit signed immediate field.

Fix the case where the toolchain does support MSA by doing a single
addition of THREAD_FPR0 into $1 with [d]addui, and doing the ld_*/st_*
relative to that.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13064/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:05 +02:00
James Hogan ea16885734 MIPS: Fix MSA ld_*/st_* asm macros to use PTR_ADDU
The MSA ld_*/st_* assembler macros for when the toolchain doesn't
support MSA use addu to offset the base address. However it is a virtual
memory pointer so fix it to use PTR_ADDU which expands to daddu for
64-bit kernels.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.3.y-
Patchwork: https://patchwork.linux-mips.org/patch/13062/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:04 +02:00
Paul Burton 8a3c8b48ac MIPS: Use copy_s.fmt rather than copy_u.fmt
In revision 1.12 of the MSA specification, the copy_u.w instruction has
been removed for MIPS32 & the copy_u.d instruction has been removed for
MIPS64. Newer toolchains (eg. Codescape SDK essentials 2015.10) will
complain about this like so:

arch/mips/kernel/r4k_fpu.S:290: Error: opcode not supported on this
processor: mips32r2 (mips32r2) `copy_u.w $1,$w26[3]'

Since we always copy to the width of a GPR, simply use copy_s instead of
copy_u to fix this.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.3.x+
Patchwork: https://patchwork.linux-mips.org/patch/13061/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:04 +02:00
Maciej W. Rozycki 8e85f275e9 MIPS: memset.S: Disable code unused with non-R6 MIPS configs
This complements commit 8c56208aff ("MIPS: lib: memset: Add MIPS R6
support").

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12452/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:04 +02:00
Leonid Yegoshin 41fa29e4d8 MIPS64: R6: R2 emulation bugfix
Error recovery pointers for fixups was improperly set as ".word"
which is unsuitable for MIPS64.

Replaced by STR(PTR)

[ralf@linux-mips.org: Apply changes as requested in the review process.]

Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Markos Chandras <markos.chandras@imgtec.com>
Fixes: b0a668fb20 ("MIPS: kernel: mips-r2-to-r6-emul: Add R2 emulator for MIPS R6")
Cc: macro@linux-mips.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: <stable@vger.kernel.org> # 4.0+
Patchwork: https://patchwork.linux-mips.org/patch/9911/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:04 +02:00
Matt Redfearn 8d4925e9a5 MIPS: dma-default: Defend against NULL dev in massage_gfp_flags
This patch ensures that the dev parameter is checked for NULL before it
is dereferenced in massage_gfp_flags. If dev is NULL, then fall back
setting the GFP flag requested and available.

Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11919/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:04 +02:00
Yanjiang Jin fa0c879ffc MIPS: oprofile: Fix a preemption issue
Use boot_cpu_type() instead of current_cpu_type() in oprofile_arch_init()
to avoid the below warning, cpu_type is normally consistent in a MIPS SMP
system.  There are a few exceptions such as SGI servers where it is
possible to mix R10000, R12000, R14000 and R16000 within certain
constraints.  Let's not worry about those now.

BUG: using smp_processor_id() in preemptible [00000000] code: insmod/952
caller is oprofile_arch_init+0x30/0x194 [oprofile]
CPU: 5 PID: 952 Comm: insmod Not tainted 4.1.13-WR8.0.0.0_standard #1
Stack : ffffffff80c10000 0000000000000001 8000000025bf0790 ffffffff80e10000
	  ffffffff80e50000 ffffffff80254e2c ffffffff80b64428 ffffffff80e10790
	  0000000000000000 ffffffff801caeb8 0000000000000045 0000000000000005
	  ffffffff80c10000 ffffffff801cb798 0000000000000000 ffffffff80e30000
	  0000000000000000 ffffffff801ff1c0 ffffffff80e2d2f8 000000000000000b
	  ffffffff801cbba0 ffffffff80e107b0 ffffffff80a77828 0000000000000005
	  00000000000003b8 ffffffff80e2d2f8 800000040ad39960 ffffffff801f9950
	  0000000000000124 80000004093b7990 80000004093b7ab8 ffffffff80925108
	  ffffffff80b69a07 ffffffff80a6f0d0 8000000407240e00 ffffffff801cc934
	  000000000000005d ffffffff80159080 0000000000000005 00000000000003b8
	  ...
Call Trace:
[<ffffffff80159080>] show_stack+0xe8/0x108
[<ffffffff80925108>] dump_stack+0x8c/0xd8
[<ffffffff80606570>] check_preemption_disabled+0x110/0x118
[<ffffffffc0086104>] oprofile_arch_init+0x30/0x194 [oprofile]
[<ffffffffc008602c>] oprofile_init+0x2c/0xc0 [oprofile]
[<ffffffff80100550>] do_one_initcall+0xa0/0x1c0
[<ffffffff80921e04>] do_init_module+0x80/0x1d8
[<ffffffff801fd0d4>] load_module+0x1b74/0x2278
[<ffffffff801fdab4>] SyS_finit_module+0xcc/0xf0
[<ffffffff80165884>] handle_sysn32+0x44/0x70

[ralf@linux-mips.org: Correct commit message.]

Signed-off-by: Yanjiang Jin <yanjiang.jin@windriver.com>
Cc: rric@kernel.org
Cc: jinyanjiang@gmail.com
Cc: linux-mips@linux-mips.org
Cc: oprofile-list@lists.sf.net
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/11769/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:03 +02:00
Huacai Chen 820880cdba MIPS: Loongson-3: Fix build error after ld-version.sh modification
Commit d5ece1cb07 ("Fix ld-version.sh to handle large 3rd version
part") modifies the ld version description. This causes a build error
on Loongson-3, so fix it.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J . Hill <sjhill@realitydiluted.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: Huacai Chen <chenhc@lemote.com>
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12890/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:03 +02:00
Huacai Chen 3484de7bcb MIPS: Loongson-3: Reserve 32MB for RS780E integrated GPU
Due to datasheet, reserving 0xff800000~0xffffffff (8MB below 4GB) is
not enough for RS780E integrated GPU's TOM (top of memory) registers
and MSI/MSI-x memory region, so we reserve 0xfe000000~0xffffffff (32MB
below 4GB).

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J . Hill <sjhill@realitydiluted.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12889/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:03 +02:00
Huacai Chen a95d069204 MIPS: Reserve nosave data for hibernation
After commit 92923ca3aa ("mm: meminit: only set page reserved
in the memblock region"), the MIPS hibernation is broken. Because pages
in nosave data section should be "reserved", but currently they aren't
set to "reserved" at initialization. This patch makes hibernation work
again.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Steven J . Hill <sjhill@realitydiluted.com>
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: stable@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12888/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:03 +02:00
Andreas Ruprecht 54292850e8 MIPS: Sibyte: Fix Kconfig dependencies of SIBYTE_BUS_WATCHER
Commit 6793f55cbc ("MIPS: sibyte: Amend dependencies for
SIBYTE_BUS_WATCHER") changed the dependencies for
SIBYTE_BUS_WATCHER to make it visible only if SIBYTE_BCM112X
or SIBYTE_SB1250 are enabled.

In the code in arch/mips/sibyte/common/bus_watcher, however,
a #if defined() check suggests that this functionality should
also be available for SIBYTE_BCM1x55 and SIBYTE_BCM1x80.

Make it selectable by extending the dependencies of
SIBYTE_BUS_WATCHER in arch/mips/sibyte/Kconfig.

Reported-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de>
Signed-off-by: Andreas Ruprecht <andreas.ruprecht@fau.de>
Cc: valentinrothberg@gmail.com
Cc: stefan.hengelein@fau.de
Cc: pebolle@tiscali.nl
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10736/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:03 +02:00
James Hogan 47f2ac5058 MIPS: I6400: Icache fills from dcache
Coherence Manager 3 (CM3) as present in I6400 can fill icache lines
effectively from dirty dcaches, so there is no need to flush dirty lines
from dcaches through to L2 prior to icache invalidation.

Set the MIPS_CACHE_IC_F_DC flag such that cpu_has_ic_fills_f_dc
evaluates to true, which avoids those dcache flushes.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Leonid Yegoshin <leonid.yegoshin@imgtec.com>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12180/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:03 +02:00
James Hogan b2a3c5be4d MIPS: c-r4k: Sync icache when it fills from dcache
It is still necessary to handle icache coherency in flush_cache_range()
and copy_to_user_page() when the icache fills from the dcache, even
though the dcache does not need to be written back. However when this
handling was added in commit 2eaa7ec286 ("[MIPS] Handle I-cache
coherency in flush_cache_range()"), it did not do any icache flushing
when it fills from dcache.

Therefore fix r4k_flush_cache_range() to run
local_r4k_flush_cache_range() without taking into account whether icache
fills from dcache, so that the icache coherency gets handled. Checks are
also added in local_r4k_flush_cache_range() so that the dcache blast
doesn't take place when icache fills from dcache.

A test to mmap a page PROT_READ|PROT_WRITE, modify code in it, and
mprotect it to VM_READ|VM_EXEC (similar to case described in above
commit) can hit this case quite easily to verify the fix.

A similar check was added in commit f8829caee3 ("[MIPS] Fix aliasing
bug in copy_to_user_page / copy_from_user_page"), so also fix
copy_to_user_page() similarly, to call flush_cache_page() without taking
into account whether icache fills from dcache, since flush_cache_page()
already takes that into account to avoid performing a dcache flush.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Leonid Yegoshin <leonid.yegoshin@imgtec.com>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12179/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:02 +02:00
James Hogan 679eb63779 MIPS: Enable ptrace hw watchpoints on MIPS R6
HARDWARE_WATCHPOINTS isn't being enabled for CPU_MIPSR6, even though it
has an identical hardware watchpoint interface to CPU_MIPSR2, which
prevents ptrace watchpoints from being loaded when executing a ptraced
process even though the watchpoints are described in /proc/cpuinfo.

Enable HARDWARE_WATCHPOINTS for CPU_MIPSR6 too.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12727/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:02 +02:00
James Hogan a7e89326b4 MIPS: Fix watchpoint restoration
Commit f51246efee ("MIPS: Get rid of finish_arch_switch().") moved the
__restore_watch() call from finish_arch_switch() (i.e. after resume()
returns) to before the resume() call in switch_to(). This results in
watchpoints only being restored when a task is descheduled, preventing
the watchpoints from being effective most of the time, except due to
chance before the watchpoints are lazily removed.

Fix the call sequence from switch_to() through to
mips_install_watch_registers() to pass the task_struct pointer of the
next task, instead of using current. This allows the watchpoints for the
next (non-current) task to be restored without reintroducing
finish_arch_switch().

Fixes: f51246efee ("MIPS: Get rid of finish_arch_switch().")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.3.x-
Patchwork: https://patchwork.linux-mips.org/patch/12726/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:02 +02:00
James Hogan 81a76d7119 MIPS: Avoid using unwind_stack() with usermode
When showing backtraces in response to traps, for example crashes and
address errors (usually unaligned accesses) when they are set in debugfs
to be reported, unwind_stack will be used if the PC was in the kernel
text address range. However since EVA it is possible for user and kernel
address ranges to overlap, and even without EVA userland can still
trigger an address error by jumping to a KSeg0 address.

Adjust the check to also ensure that it was running in kernel mode. I
don't believe any harm can come of this problem, since unwind_stack() is
sufficiently defensive, however it is only meant for unwinding kernel
code, so to be correct it should use the raw backtracing instead.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 3.15+
Patchwork: https://patchwork.linux-mips.org/patch/11701/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
(cherry picked from commit d2941a975ac745c607dfb590e92bb30bc352dad9)
2016-05-09 12:00:02 +02:00
James Hogan a816b306c6 MIPS: Don't unwind to user mode with EVA
When unwinding through IRQs and exceptions, the unwinding only continues
if the PC is a kernel text address, however since EVA it is possible for
user and kernel address ranges to overlap, potentially allowing
unwinding to continue to user mode if the user PC happens to be in the
kernel text address range.

Adjust the check to also ensure that the register state from before the
exception is actually running in kernel mode, i.e. !user_mode(regs).

I don't believe any harm can come of this problem, since the PC is only
output, the stack pointer is checked to ensure it resides within the
task's stack page before it is dereferenced in search of the return
address, and the return address register is similarly only output (if
the PC is in a leaf function or the beginning of a non-leaf function).

However unwind_stack() is only meant for unwinding kernel code, so to be
correct the unwind should stop there.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Reviewed-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 3.15+
Patchwork: https://patchwork.linux-mips.org/patch/11700/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:02 +02:00
Florian Fainelli f6cc0ee98b MIPS: BMIPS: Fill in current_cpu_data.core
Read the core ID in bmips_smp_finish() for BMIPS5000 CPUs to get appropriate
processor parenting in set_cpu_sibling_map().

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: john@phrozen.org
Cc: cernekee@gmail.com
Cc: jon.fraser@broadcom.com
Cc: jaedon.shin@gmail.com
Cc: dragan.stancevic@gmail.com
Cc: jogo@openwrt.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12380/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:01 +02:00
Florian Fainelli 904c3b4952 MIPS: BMIPS: Remove maxcpus from BCM97435SVMB DTS
Now that SMP properly works on 7435, do not restrict the number of core,
unleash them all.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: john@phrozen.org
Cc: cernekee@gmail.com
Cc: jon.fraser@broadcom.com
Cc: jaedon.shin@gmail.com
Cc: dragan.stancevic@gmail.com
Cc: jogo@openwrt.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12379/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:01 +02:00
Florian Fainelli a5b143ec51 MIPS: BMIPS: Add missing 7038 L1 register cells to BCM7435
7435 has 4 7038 L1 base register address for each of its Core + TP (for a total
of 4 threads of execution), add the two missing cells for Core 1. We are
providing HW interrupts 2/3 even for Core 1/TP0/TP1 because that's what they
are, and we can later decide to remap these in software to provide proper
interrupt affinity/parenting.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: john@phrozen.org
Cc: cernekee@gmail.com
Cc: jon.fraser@broadcom.com
Cc: jaedon.shin@gmail.com
Cc: dragan.stancevic@gmail.com
Cc: jogo@openwrt.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12378/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:01 +02:00
Ralf Baechle f241265fdc MIPS: BMIPS: Make whitespacely correct.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:01 +02:00
Florian Fainelli 21b30c00f3 MIPS: BMIPS: Add Whirlwind (BMIPS5200) initialization code
Import bmips_5xxx_init.S from the stblinux-3.3 tree, and to make sure that this
would work nicely with a BMIPS multiplatform kernel (with BMIPS330, BMIPS43XX
and BMIPS5000 enabled), update soft_reset to check for the BMIPS5200 processor
id (PRID_IMP_BMIPS5200) and execute bmips_5xxx_init for these processors to
bring them online.

Tested on 7425, 7429 and 7435 with CPU hotplug. 7435 SMP still needs some
additional changes in the L1 interrupt area to work properly with interrupt
affinity.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: john@phrozen.org
Cc: cernekee@gmail.com
Cc: jon.fraser@broadcom.com
Cc: jaedon.shin@gmail.com
Cc: dragan.stancevic@gmail.com
Cc: jogo@openwrt.org
Patchwork: https://patchwork.linux-mips.org/patch/12377/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:01 +02:00
Florian Fainelli cbbda6e7c9 MIPS: BMIPS: Fix PRID_IMP_BMIPS5000 masking for BMIPS5200
BMIPS5000 have a PrID value of 0x5A00 and BMIPS5200 have a PrID value of
0x5B00, which, masked with 0x5A00, returns 0x5A00. Update all conditionals on
the PrID to cover both variants since we are going to need this to enable
BMIPS5200 SMP. The existing check, masking with 0xFF00 would not cover
BMIPS5200 at all.

Fixes: 68e6a78373 ("MIPS: BMIPS: Add PRId for BMIPS5200 (Whirlwind)")
Fixes: 6465460c92 ("MIPS: BMIPS: change compile time checks to runtime checks")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: john@phrozen.org
Cc: cernekee@gmail.com
Cc: jogo@openwrt.org
Cc: jaedon.shin@gmail.com
Cc: jfraser@broadcom.com
Cc: pgynther@google.com
Cc: dragan.stancevic@gmail.com
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12279/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:01 +02:00
Paul Burton 578bffc82e MIPS: Don't BUG_ON when no IPI domain is found
Commit fbde2d7d82 ("MIPS: Add generic SMP IPI support") introduced
code that BUG_ON's in the case of a kernel that supports IPI domains but
does not have one at runtime. This case is possible on Malta where for
IPIs we may use either the GIC (which has an IPI IRQ domain
implementation) or core-local software interrupts between VPEs (which do
not currently have an IPI IRQ domain implementation). We can not know
which will be used until runtime when we know whether a GIC is actually
present, and if we run on a system with multiple VPEs and no GIC then
the BUG_ON is hit.

Commit 19fb5818ed ("IPS: Fix broken malta qemu") worked around this
for the single-core single-VPE case typically seen using QEMU, but does
not catch the multi-VPE case. This patch removes the insufficient CPU
presence check that was added and works around the bug differently,
effectively reverting that commit.

A simple way to reproduce this bug is by using QEMU, which partially
implements the MT ASE but does not implement the GIC as of version 2.5.
Using "-cpu 34Kf -smp 2" will present a system with 2 VPEs in one core &
no GIC, hitting the BUG_ON.

Given that we're post-merge-window on the way to v4.6, avoid this by
just returning from mips_smp_ipi_init when no IPI IRQ domain is found.
Ideally at some point all IPI implementations would be converted to the
same IPI IRQ domain interface & we'd be able to restore the check.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Qais Yousef <qsyousef@gmail.com>
Fixes: fbde2d7d82 ("MIPS: Add generic SMP IPI support")
Fixes: 19fb5818ed ("IPS: Fix broken malta qemu")
Reverts: 19fb5818ed ("IPS: Fix broken malta qemu")
Cc: Qais Yousef <qsyousef@gmail.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/13007/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:00 +02:00
James Hogan 5daebc477d MIPS: Fix siginfo.h to use strict posix types
Commit 85efde6f4e ("make exported headers use strict posix types")
changed the asm-generic siginfo.h to use the __kernel_* types, and
commit 3a471cbc08 ("remove __KERNEL_STRICT_NAMES") make the internal
types accessible only to the kernel, but the MIPS implementation hasn't
been updated to match.

Switch to proper types now so that the exported asm/siginfo.h won't
produce quite so many compiler errors when included alone by a user
program.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Christopher Ferris <cferris@google.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 2.6.30-
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12477/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:00 +02:00
Corey Minyard c80e1b62ff MIPS: Fix crash registers on non-crashing CPUs
As part of handling a crash on an SMP system, an IPI is send to
all other CPUs to save their current registers and stop.  It was
using task_pt_regs(current) to get the registers, but that will
only be accurate if the CPU was interrupted running in userland.
Instead allow the architecture to pass in the registers (all
pass NULL now, but allow for the future) and then use get_irq_regs()
which should be accurate as we are in an interrupt.  Fall back to
task_pt_regs(current) if nothing else is available.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/13050/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:00 +02:00
Nikolay Martynov e03ac9f0c3 mips: Fix CPC_BASE_ADDR mask to match datasheet
According to 'MIPS32® interAptivTM Multiprocessing
System Programmer’s Guide' CPC_BASE_ADDR takes bits [31:15].

This change is tested ith mt7621 which wasn't working without it.

Signed-off-by: Nikolay Martynov <mar.kolya@gmail.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/11766/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-09 12:00:00 +02:00
Linus Torvalds 9125aeb3e2 Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
 "These are a number of updates to fix a few problems found in the ARM
  nommu code over the last couple of years, caused mostly by changes on
  the mmu side"

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8573/1: domain: move {set,get}_domain under config guard
  ARM: 8572/1: nommu: change memory reserve for the vectors
  ARM: 8571/1: nommu: fix PMSAv7 setup
2016-05-07 08:27:35 -07:00
Linus Torvalds 35cd3f4563 Merge branch 'for-4.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata fixes from Tejun Heo:
 "An ahci driver addition and updates to ahci port enable handling for
  some platform devices"

* 'for-4.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  ata: add AMD Seattle platform driver
  ARM: dts: apq8064: add ahci ports-implemented mask
  ata: ahci-platform: Add ports-implemented DT bindings.
  libahci: save port map for forced port map
2016-05-07 08:13:42 -07:00
Linus Torvalds 3f86ba5d0c Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "This contains two fixes: a boot fix for older SGI/UV systems, and an
  APIC calibration fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/tsc: Read all ratio bits from MSR_PLATFORM_INFO
  x86/platform/UV: Bring back the call to map_low_mmrs in uv_system_init
2016-05-06 12:59:27 -07:00
Linus Torvalds 18fb92c30c Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "This tree contains two fixes: new Intel CPU model numbers and an
  AMD/iommu uncore PMU driver fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/amd/iommu: Do not register a task ctx for uncore like PMUs
  perf/x86: Add model numbers for Kabylake CPUs
2016-05-06 11:40:24 -07:00
Linus Torvalds cade818463 Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Ingo Molnar:
 "This tree contains three fixes: a console spam fix, a file pattern fix
  and a sysfb_efi fix for a bug that triggered on older ThinkPads"

* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/sysfb_efi: Fix valid BAR address range check
  x86/efi-bgrt: Switch all pr_err() to pr_notice() for invalid BGRT
  MAINTAINERS: Remove asterisk from EFI directory names
2016-05-06 11:33:02 -07:00
Linus Torvalds 83a395d332 Merge branch 'parisc-4.6-5' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fix from Helge Deller:
 "Patch from Dmitry V Levin to fix a kernel crash when a straced process
  calls the (invalid) syscall which is equal to value of __NR_Linux_syscalls"

* 'parisc-4.6-5' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: fix a bug when syscall number of tracee is __NR_Linux_syscalls
2016-05-06 11:27:05 -07:00
Linus Torvalds dd287690b0 ARC fixes for 4.6-rc7
- Fix for PTE truncation in PAE40 builds
  - Fix for big endian IO accessors lacking IO barrier
  - Allow HIGHMEM to work with low physical addresses
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXLIohAAoJEGnX8d3iisJeXLcQALwte9aeySA+r1X7S/OkW6uw
 kU+kAYqjxnjgIy4Zy+BmQwFMTxJpvb7NV9ZHvLWNFXWlyZEBAbDQz8LgLpuAekx4
 nbyk5KvvSKKkWP19T0/pCr19mQC06qKWzEr91zZ/lqxDwZKR6GIlbnlT7ugB25gH
 9dKSUww17YsS2nVvlq0d0nbs+rFP/4fE9O8RW096bo6zOi5j6dzP7jJy6AdG1Czq
 +UQUcFdkIkJLwoOaamur49azNmpmdR8goOgz6kzj8NK2J/cQx5698YTArR9c2xSw
 86TAr1yw4gnz9M+vinNrfY+mxs+n3YZTG//tVbuhL5nvGKDM6T1lkuyJPbiJHHDQ
 NxULX60NYOP32Xl5/fnCGoIDL30rLwmCgn1T2uZONVnx9e0Ai51TJE3T7Qlux/3X
 t/BlqzWQRIWOfR6jAtS+Gi3KM4fRwRNAeU4ed/kUqyXQSoRUNXOPof35+h7O7dSO
 dvrUnhBtBXsHCaDRRLfxjDzNqV9T2aIr/zZLM3rkBw79SPVIBHdV1hjLt0IxpMrn
 ttwhjVQXahD+MUGxLqS7efwdyHzjtOB/D1wW/6Fg6n/ircvTcIziV4pThHCFTxs9
 zWgmGgtD2XWSj0fhNXqe+AyjW1a6ZiH3GjMfV9cBbAsydFmUDCws8kWMTQOUSRNw
 1l/L0DIsBZzGlnredJzJ
 =bf8d
 -----END PGP SIGNATURE-----

Merge tag 'arc-4.6-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:
 "Late in the cycle, but this has fixes for couple of issues: a PAE40
  boot crash and Arnd spotting lack of barriers in BE io-accessors.

  The 3rd patch for enabling highmem in low physical mem ;-) honestly is
  more than a "fix" but its been in works for some time, seems to be
  stable in testing and enables 2 of our customers to go forward with
  4.6 kernel.

   - Fix for PTE truncation in PAE40 builds
   - Fix for big endian IO accessors lacking IO barrier
   - Allow HIGHMEM to work with low physical addresses"

* tag 'arc-4.6-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: support HIGHMEM even without PAE40
  ARC: Fix PAE40 boot failures due to PTE truncation
  ARC: Add missing io barriers to io{read,write}{16,32}be()
2016-05-06 11:14:38 -07:00
Linus Torvalds 4883d11e06 powerpc fixes for 4.6 #4
- Fix bad inline asm constraint in create_zero_mask() from Anton Blanchard
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXLEx6AAoJEFHr6jzI4aWAQskQAL9rtQtxhJQnCE97832iIgWn
 +YEef53mSTX7CEpoQqGY/2PUAOeQ8MPteewNaO5spZC2Vv34bXuHtv0q1uhiVJ6K
 Q0t1LSbm60rv9BIuO8rDSJmSGnSljI1bczd0WVsTHuYLyFrVPtRZaDBJT9Bh2JTQ
 +K/GE3o4R1X5pnUlZ4UqCcN7KwLrqHkQrmEcsSdUQMJ4s4jZaxS1KP9Kzq/M+mjy
 L9K4SyXneMyCgiUCIdu3hN5A7Vb+2NauGmCP/eV6x4+M/Bq5JC4vNDUcCKE0IBLF
 bNP5nvMKBBZOHlwxVWo9d2UWPeyEoIz4sKiZ26AE+urCYGhRMHb4M/Mh0qUbru13
 CwZ1BwmZnyYs4pY8INbZJ+TvLcFgROfxxeUlT0KHStlnOrIbmgeKPWI/nymsL6n8
 uHgSc8SnhskNW0n4NhWKVPD5iKqeWV2spFr5aTQ2tLDi7s2rT2oZjl5/GvKSIt+o
 NlmkL2LpbIOftRQ2j+EhHPq/acV8+d20yjN8Zul0tSTNuFeSk6rXyXhEiYXfU+Ao
 lPjkheNJZ9Oq0MAW0dvqWK4DrK31lhnZYcauO84cSA39sGa9BhHFe1E9XXMDSDwf
 YFs7ihMcbap1pejcf7waJJ5axCwN1SgxUGH1lCuGmOAypftbQT5TpB7m52ctAS5J
 vbsUZ8Z0W6OwsfSiKc/G
 =IkNh
 -----END PGP SIGNATURE-----

Merge tag 'powerpc-4.6-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fix from Michael Ellerman:
 "Fix bad inline asm constraint in create_zero_mask() from Anton
  Blanchard"

* tag 'powerpc-4.6-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc: Fix bad inline asm constraint in create_zero_mask()
2016-05-06 11:05:07 -07:00
Dmitry V. Levin f0b22d1bb2 parisc: fix a bug when syscall number of tracee is __NR_Linux_syscalls
Do not load one entry beyond the end of the syscall table when the
syscall number of a traced process equals to __NR_Linux_syscalls.
Similar bug with regular processes was fixed by commit 3bb457af4f
("[PARISC] Fix bug when syscall nr is __NR_Linux_syscalls").

This bug was found by strace test suite.

Cc: stable@vger.kernel.org
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Helge Deller <deller@gmx.de>
2016-05-06 15:09:07 +02:00
Chen Yu 886123fb3a x86/tsc: Read all ratio bits from MSR_PLATFORM_INFO
Currently we read the tsc radio: ratio = (MSR_PLATFORM_INFO >> 8) & 0x1f;

Thus we get bit 8-12 of MSR_PLATFORM_INFO, however according to the SDM
(35.5), the ratio bits are bit 8-15.

Ignoring the upper bits can result in an incorrect tsc ratio, which causes the
TSC calibration and the Local APIC timer frequency to be incorrect.

Fix this problem by masking 0xff instead.

[ tglx: Massaged changelog ]

Fixes: 7da7c15613 "x86, tsc: Add static (MSR) TSC calibration on Intel Atom SoCs"
Signed-off-by: Chen Yu <yu.c.chen@intel.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: stable@vger.kernel.org
Cc: Bin Gao <bin.gao@intel.com>
Cc: Len Brown <lenb@kernel.org>
Link: http://lkml.kernel.org/r/1462505619-5516-1-git-send-email-yu.c.chen@intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-05-06 11:50:50 +02:00
Linus Torvalds 9caa7e7848 Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton:
 "14 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  byteswap: try to avoid __builtin_constant_p gcc bug
  lib/stackdepot: avoid to return 0 handle
  mm: fix kcompactd hang during memory offlining
  modpost: fix module autoloading for OF devices with generic compatible property
  proc: prevent accessing /proc/<PID>/environ until it's ready
  mm/zswap: provide unique zpool name
  mm: thp: kvm: fix memory corruption in KVM with THP enabled
  MAINTAINERS: fix Rajendra Nayak's address
  mm, cma: prevent nr_isolated_* counters from going negative
  mm: update min_free_kbytes from khugepaged after core initialization
  huge pagecache: mmap_sem is unlocked when truncation splits pmd
  rapidio/mport_cdev: fix uapi type definitions
  mm: memcontrol: let v2 cgroups follow changes in system swappiness
  mm: thp: correct split_huge_pages file permission
2016-05-05 20:48:35 -07:00
Andrea Arcangeli 127393fbe5 mm: thp: kvm: fix memory corruption in KVM with THP enabled
After the THP refcounting change, obtaining a compound pages from
get_user_pages() no longer allows us to assume the entire compound page
is immediately mappable from a secondary MMU.

A secondary MMU doesn't want to call get_user_pages() more than once for
each compound page, in order to know if it can map the whole compound
page.  So a secondary MMU needs to know from a single get_user_pages()
invocation when it can map immediately the entire compound page to avoid
a flood of unnecessary secondary MMU faults and spurious
atomic_inc()/atomic_dec() (pages don't have to be pinned by MMU notifier
users).

Ideally instead of the page->_mapcount < 1 check, get_user_pages()
should return the granularity of the "page" mapping in the "mm" passed
to get_user_pages().  However it's non trivial change to pass the "pmd"
status belonging to the "mm" walked by get_user_pages up the stack (up
to the caller of get_user_pages).  So the fix just checks if there is
not a single pte mapping on the page returned by get_user_pages, and in
turn if the caller can assume that the whole compound page is mapped in
the current "mm" (in a pmd_trans_huge()).  In such case the entire
compound page is safe to map into the secondary MMU without additional
get_user_pages() calls on the surrounding tail/head pages.  In addition
of being faster, not having to run other get_user_pages() calls also
reduces the memory footprint of the secondary MMU fault in case the pmd
split happened as result of memory pressure.

Without this fix after a MADV_DONTNEED (like invoked by QEMU during
postcopy live migration or balloning) or after generic swapping (with a
failure in split_huge_page() that would only result in pmd splitting and
not a physical page split), KVM would map the whole compound page into
the shadow pagetables, despite regular faults or userfaults (like
UFFDIO_COPY) may map regular pages into the primary MMU as result of the
pte faults, leading to the guest mode and userland mode going out of
sync and not working on the same memory at all times.

Any other secondary MMU notifier manager (KVM is just one of the many
MMU notifier users) will need the same information if it doesn't want to
run a flood of get_user_pages_fast and it can support multiple
granularity in the secondary MMU mappings, so I think it is justified to
be exposed not just to KVM.

The other option would be to move transparent_hugepage_adjust to
mm/huge_memory.c but that currently has all kind of KVM data structures
in it, so it's definitely not a cut-and-paste work, so I couldn't do a
fix as cleaner as this one for 4.6.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: "Li, Liang Z" <liang.z.li@intel.com>
Cc: Amit Shah <amit.shah@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-05-05 17:38:53 -07:00
Linus Torvalds c4781a8df9 Here are a couple last-minute fixes for ARM SoCs. Most of them
are for the OMAP platforms, quoting Tony Lindgren:
 
     Fixes for omaps for v4.6-rc cycle. All dts fixes, mostly
     affecting voltages and pinctrl for various device drivers:
 
     - Regulator minimum voltage fixes for omap5
     - ISP syscon register offset fix for omap3
     - Fix regulator initial modes for n900
     - Fix omap5 pinctrl wkup instance size
 
 The rest are all for different platforms:
 
 - Allwinner:
    Remove incorrect constraints from a dcdc1 regulator
 
 - Alltera SoCFPGA:
   Fix compilation in thumb2 mode
 
 - Samsung exynos:
   Fix a potential oops in the pm-domain error handling
 
 - Davinci:
   Avoid a link error if NVMEM is disabled
 
 - Renesas:
   Do not mark an external uart clock as disabled, to allow
   probing the uarts
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIVAwUAVyud6WCrR//JCVInAQKhXBAAir8+FCYQGLzwFQrCHTRa6zJq0sGUOLss
 DBawxezSxtcz9LYn2s9EI5W7yqs/vtjILNTtV3bNNHZTrn/cE8Jpvo+kjNK096PP
 3m0LS20pbGV/629JXiuf55pWugoXUvQNP4kTcuW8dQzQWWuzv2QfJwtW776Q8rOQ
 ZRvh6uUsCgsc6JCCnZESVAnWQ7VA5YpTpZRhokhogdU0r6VTuHfOf8NPD10kiel+
 jpayjC852MPJtS+1JI/d9vIydsSPHbfS8lkVp0rX7oep/Xjp6C3HGSNH+KkLTjXf
 9q6uVm21Kko24wd3RAFYNFshNmD80j+BQJN+59gx7jUnQsVA+WZkNlKSPD1svf+R
 9Ym+fGVn+UgsU/rSW+hhTYft7ao6Tud+W80QARFgWX6B3E3xF/ExJ9TE07hg0sK7
 b+JZAFoSnEut6yTq5g99/YdvDLfqANPo3f3968bl18rKh15Iso/u177KR3cbMPBw
 rKFXg9fkmjd3g5mUUekYvaEKbb+bEeLaAT+2Cri3diSW7odTzsLQSXELS0UTOWfx
 TLTJSkmgxvABhdZZPQscHBvxwXPGQO8S479GGXG2xcI+tiT7ZDJPZeVm0P99B8WB
 Y2VjTjuc49ZALrzT93nY9nInyjhzI5NsnccG5Khw+qoxlZ3+H+N2tVkhwt6+FNcg
 vl8vcFbj9hM=
 =ymz3
 -----END PGP SIGNATURE-----

Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Here are a couple last-minute fixes for ARM SoCs.  Most of them are
  for the OMAP platforms, the rest are all for different platforms.

  OMAP:
     All dts fixes, mostly affecting voltages and pinctrl for various
     device drivers:

      - Regulator minimum voltage fixes for omap5
      - ISP syscon register offset fix for omap3
      - Fix regulator initial modes for n900
      - Fix omap5 pinctrl wkup instance size

  Allwinner:
     Remove incorrect constraints from a dcdc1 regulator

  Alltera SoCFPGA:
     Fix compilation in thumb2 mode

  Samsung exynos:
     Fix a potential oops in the pm-domain error handling

  Davinci:
     Avoid a link error if NVMEM is disabled

  Renesas:
     Do not mark an external uart clock as disabled, to allow probing
     the uarts"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: davinci: only use NVMEM when available
  ARM: SoCFPGA: Fix secondary CPU startup in thumb2 kernel
  ARM: dts: omap5: fix range of permitted wakeup pinmux registers
  ARM: dts: omap3-n900: Specify peripherals LDO regulators initial mode
  ARM: dts: omap3: Fix ISP syscon register offset
  ARM: dts: omap5-cm-t54: fix ldo1_reg and ldo4_reg ranges
  ARM: dts: omap5-board-common: fix ldo1_reg and ldo4_reg ranges
  arm64: dts: r8a7795: Don't disable referenced optional scif clock
  ARM: EXYNOS: Properly skip unitialized parent clock in power domain on
  ARM: dts: sun8i-q8-common: Do not set constraints on dc1sw regulator
2016-05-05 15:31:35 -07:00
Vladimir Murzin ec953b70f3 ARM: 8573/1: domain: move {set,get}_domain under config guard
Recursive undefined instrcution falut is seen with R-class taking an
exception. The reson for that is __show_regs() tries to get domain
information, but domains is not available on !MMU cores, like R/M
class.

Fix it by puting {set,get}_domain functions under CONFIG_CPU_CP15_MMU
guard and providing stubs for the case where domains is not supported.

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-05-05 19:03:02 +01:00
Jean-Philippe Brucker 5b526bd925 ARM: 8572/1: nommu: change memory reserve for the vectors
Commit 19accfd3 (ARM: move vector stubs) moved the vector stubs in an
additional page above the base vector one. This change wasn't taken into
account by the nommu memreserve.
This patch ensures that the kernel won't overwrite any vector stub on
nommu.

[changed the MPU side too]

Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-05-05 19:03:02 +01:00
Jean-Philippe Brucker 695665b0c5 ARM: 8571/1: nommu: fix PMSAv7 setup
Commit 1c2f87c (ARM: 8025/1: Get rid of meminfo) broke the support for
MPU on ARMv7-R. This patch adapts the code inside CONFIG_ARM_MPU to use
memblocks appropriately.

MPU initialisation only uses the first memory region, and removes all
subsequent ones. Because looping over all regions that need removal is
inefficient, and memblock_remove already handles memory ranges, we can
flatten the 'for_each_memblock' part.

Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-05-05 19:03:01 +01:00
Wang YanQing c10fcb14c7 x86/sysfb_efi: Fix valid BAR address range check
The code for checking whether a BAR address range is valid will break
out of the loop when a start address of 0x0 is encountered.

This behaviour is wrong since by breaking out of the loop we may miss
the BAR that describes the EFI frame buffer in a later iteration.

Because of this bug I can't use video=efifb: boot parameter to get
efifb on my new ThinkPad E550 for my old linux system hard disk with
3.10 kernel. In 3.10, efifb is the only choice due to DRM/I915 not
supporting the GPU.

This patch also add a trivial optimization to break out after we find
the frame buffer address range without testing later BARs.

Signed-off-by: Wang YanQing <udknight@gmail.com>
[ Rewrote changelog. ]
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Reviewed-by: Peter Jones <pjones@redhat.com>
Cc: <stable@vger.kernel.org>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: David Herrmann <dh.herrmann@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/1462454061-21561-2-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-05-05 16:01:00 +02:00
Vineet Gupta 26f9d5fd82 ARC: support HIGHMEM even without PAE40
Initial HIGHMEM support on ARC was introduced for PAE40 where the low
memory (0x8000_0000 based) and high memory (0x1_0000_0000) were
physically contiguous. So CONFIG_FLATMEM sufficed (despite a peipheral
hole in the middle, which wasted a bit of struct page memory, but things
worked).

However w/o PAE, highmem was not possible and we could only reach
~1.75GB of DDR. Now there is a use case to access ~4GB of DDR w/o PAE40
The idea is to have low memory at canonical 0x8000_0000 and highmem
at 0 so enire 4GB address space is available for physical addressing
This needs additional platform/interconnect mapping to convert
the non contiguous physical addresses into linear bus adresses.

From Linux point of view, non contiguous divide means FLATMEM no
longer works and DISCONTIGMEM is needed to track the pfns in the 2
regions.

This scheme would also work for PAE40, only better in that we don't
waste struct page memory for the peripheral hole.

The DT description will be something like

    memory {
        ...
        reg = <0x80000000 0x200000000   /* 512MB: lowmem */
               0x00000000 0x10000000>;  /* 256MB: highmem */
   }

Signed-off-by: Noam Camus <noamc@ezchip.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-05-05 16:35:46 +05:30
Vineet Gupta 2519d75367 ARC: Fix PAE40 boot failures due to PTE truncation
So a benign looking cleanup which macro'ized PAGE_SHIFT shifts turned
out to be bad (since it was done non-sensically across the board).

It caused boot failures with PAE40 as forced cast to (unsigned long)
from newly introduced virt_to_pfn() was causing truncatiion of the
(long long) pte/paddr values.

It is OK to use this in accessors dealing with kernel virtual address,
pointers etc, but not for PTE values themelves.

Fixes: cJ2ff5cf2735c ("ARC: mm: Use virt_to_pfn() for addr >> PAGE_SHIFT pattern)
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-05-05 16:35:45 +05:30
Vineet Gupta e5bc0478ab ARC: Add missing io barriers to io{read,write}{16,32}be()
While reviewing a different change to asm-generic/io.h Arnd spotted that
ARC ioread32 and ioread32be both of which come from asm-generic versions
are not symmetrical in terms of calling the io barriers.

generic ioread32   -> ARC readl()                  [ has barriers]
generic ioread32be -> __be32_to_cpu(__raw_readl()) [ lacks barriers]

While generic ioread32be is being remediated to call readl(), that involves
a swab32(), causing double swaps on ioread32be() on Big Endian systems.

So provide our versions of big endian IO accessors to ensure io barrier
calls while also keeping them optimal

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: stable@vger.kernel.org  [4.2+]
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-05-05 16:35:28 +05:30
Peter Zijlstra 8482716b9d perf/x86/amd/iommu: Do not register a task ctx for uncore like PMUs
The new sanity check introduced by:

  2665784850 ("perf/core: Verify we have a single perf_hw_context PMU")

... triggered on the AMD IOMMU driver.

IOMMUs are not per logical CPU, they cannot have per-task counters. Fix it.

Reported-by: Borislav Petkov <bp@alien8.de>
Tested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: jroedel@suse.de
Cc: suravee.suthikulpanit@amd.com
Link: http://lkml.kernel.org/r/20160423224255.GB3430@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-05-05 10:11:28 +02:00
Alex Thorlton 08914f436b x86/platform/UV: Bring back the call to map_low_mmrs in uv_system_init
A while back the following commit:

  d394f2d9d8 ("x86/platform/UV: Remove EFI memmap quirk for UV2+")

changed uv_system_init() to only call map_low_mmrs() on older UV1 hardware,
which requires EFI_OLD_MEMMAP to be set in order to boot.

The recent changes to the EFI memory mapping code in:

  d2f7cbe7b2 ("x86/efi: Runtime services virtual mapping")

exposed some issues with the fact that we were relying on the EFI memory
mapping mechanisms to map in our MMRs for us, after commit d394f2d9d8.

Rather than revert the entire commit and go back to forcing
EFI_OLD_MEMMAP on all UVs, we're going to add the call to map_low_mmrs()
back into uv_system_init(), and then fix up our EFI runtime calls to use
the appropriate page table.

For now, UV2+ will still need efi=old_map to boot, but there will be
other changes soon that should eliminate the need for this.

Signed-off-by: Alex Thorlton <athorlton@sgi.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Adam Buchbinder <adam.buchbinder@gmail.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Russ Anderson <rja@sgi.com>
Cc: Dimitri Sivanich <sivanich@sgi.com>
Link: http://lkml.kernel.org/r/1462401592-120735-1-git-send-email-athorlton@sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-05-05 09:55:02 +02:00
Andi Kleen cba1b3798e perf/x86: Add model numbers for Kabylake CPUs
Everything the same as Skylake, just new model numbers.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1461977748-17616-1-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-05-05 09:29:00 +02:00
Josh Boyer 7f9b474c92 x86/efi-bgrt: Switch all pr_err() to pr_notice() for invalid BGRT
The promise of pretty boot splashes from firmware via BGRT was at
best only that; a promise.  The kernel diligently checks to make
sure the BGRT data firmware gives it is valid, and dutifully warns
the user when it isn't.  However, it does so via the pr_err log
level which seems unnecessary.  The user cannot do anything about
this and there really isn't an error on the part of Linux to
correct.

This lowers the log level by using pr_notice instead.  Users will
no longer have their boot process uglified by the kernel reminding
us that firmware can and often is broken when the 'quiet' kernel
parameter is specified.  Ironic, considering BGRT is supposed to
make boot pretty to begin with.

Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Matt Fleming <matt@codeblueprint.co.uk>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Môshe van der Sterre <me@moshe.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/1462303781-8686-4-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-05-04 08:36:44 +02:00
Linus Torvalds ba22906a9f Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull sparc fixes from David Miller:

 1) Fix panics with SR-IOV, from Babu Moger.

 2) Wire up preadv2/pwritev2.

 3) Allow proper auto-loading of VIO devices, from John Paul Adrian
    Glaubitz.

 4) Recognize Sonoma cpus, from Khalid Aziz.

 5) Fix bootup regressions caused by syscall trace fixes made recently.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Fix bootup regressions on some Kconfig combinations.
  sparc64: recognize and support Sonoma CPU type
  sparc: Implement and wire up vio_hotplug for vio.
  sparc: Implement and wire up modalias_show for vio.
  sparc/pci: Refactor dev_archdata initialization into pci_init_dev_archdata
  sparc/defconfigs: Remove CONFIG_IPV6_PRIVACY
  sparc: Write up preadv2/pwritev2 syscalls.
  sparc/PCI: Fix for panic while enabling SR-IOV
2016-05-02 09:32:50 -07:00
Anton Blanchard b4c112114a powerpc: Fix bad inline asm constraint in create_zero_mask()
In create_zero_mask() we have:

	addi	%1,%2,-1
	andc	%1,%1,%2
	popcntd	%0,%1

using the "r" constraint for %2. r0 is a valid register in the "r" set,
but addi X,r0,X turns it into an li:

	li	r7,-1
	andc	r7,r7,r0
	popcntd	r4,r7

Fix this by using the "b" constraint, for which r0 is not a valid
register.

This was found with a kernel build using gcc trunk, narrowed down to
when -frename-registers was enabled at -O2. It is just luck however
that we aren't seeing this on older toolchains.

Thanks to Segher for working with me to find this issue.

Cc: stable@vger.kernel.org
Fixes: d0cebfa650 ("powerpc: word-at-a-time optimization for 64-bit Little Endian")
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-05-02 11:10:25 +10:00
Linus Torvalds 1b46bac627 powerpc fixes for 4.6 #3
- cxl: Keep IRQ mappings on context teardown from Michael Neuling
  - cxl: Poll for outstanding IRQs when detaching a context from Michael Neuling
  - Wire up preadv2 and pwritev2 syscalls from Rui Salvaterra
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXI2HxAAoJEFHr6jzI4aWAfLgP/jxD+kfBtrK6KJXq5BVM+IWr
 aevVTVCgv3F8yOiI0ZPyOSh7B23dP8nBGYcejpTxyQcb8lox20WL6Q+om7H+BleC
 yrb9/sGzvJXIdazqMF77fzDjTHjjAMNizi9f82+8OzrghtQj8GJNogKwydIXe3QB
 +27kZcbkpXhdJZ/V0qmsWCAMV+sdaW0BW3DREQ0jFf0k08I0HMHiyN/zrqwadLjU
 Qx7af0iENdSRXtve1vGI41lflDPTaou39Y4NyUHfar1zGtt2rktrl5z16lmPC9nw
 gio6CsTIKwjsWRZugzrAlPXaToZKGgCGmW634RRfBMkjOnFoEGk0/GN2w0A+wjp4
 +jYq8v+2jss74Ngq12/NmIbB+b8iFsKsN7b0UPZnf91PsAKlprB6iDbCw35KSHgi
 MLB8cOeEGBg+nm+ZSdrylyOa7RSJv3dK7cfEegtpXRAdxGwVAwCpjXvBqA+fdyUi
 dfg2ChHJ91GWs3+ljPd/ee+OTPq3jY+o6PL/lQBaGhC6XuxrFQTsm537pNzlH6wf
 sUZzF5duf1jpRvnpeGgzAMUqYHz7W/NbiHKVV8EC18jSDnc/7BANfVxENBk1Vk+o
 2CdVWS26hDTUkRKdx+JbDRsStD1XxBgmBD37tEaDuD49VvbkqHB5yarjqAphM+zY
 Pf3WwyuXpfsB1ppjrzCM
 =4O+o
 -----END PGP SIGNATURE-----

Merge tag 'powerpc-4.6-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "A few more powerpc fixes for 4.6:

   - cxl: Keep IRQ mappings on context teardown from Michael Neuling

   - cxl: Poll for outstanding IRQs when detaching a context from
     Michael Neuling

   - Wire up preadv2 and pwritev2 syscalls from Rui Salvaterra"

* tag 'powerpc-4.6-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc: wire up preadv2 and pwritev2 syscalls
  cxl: Poll for outstanding IRQs when detaching a context
  cxl: Keep IRQ mappings on context teardown
2016-04-29 18:50:08 -07:00
Kevin Hilman ed19ca7fa8 Allwinner fixes for 4.6
A single regulator fix
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXI42/AAoJEBx+YmzsjxAgtVQP/0OTC5jU7+jr3rfuVQbb4ufT
 YuTp0DztBP9YfedFcphwF42Py3LBl11BdTXy6qbMvkcGcdxfaSYyOGgC+Of1ZyQ5
 8zlxj8aK6aM9T16hdegYMnolhriJefBr+HioRSXuABexg+0S5alkgRcJILiCJBSJ
 h3g7cYYLp1gMzE7Ik1IMT1dLFDaUlonVeeHMtcJqEcyEPhDKwvHXeqLVJiTn+qcO
 b9pGNwCqRXqMRygsedtx2O0nSGdk9lRmJFD5N+ePS3Y3NWri9+DtXwSfE6+1we9Z
 uOrGheQBqbRDZGdJZDsIam8++uskSsFfX2CRq2+T4CHkN6JNhGCsk2I83jws07YV
 LQkl/RohCmUiB0WwFjuuc5+MUtVFIoYR+65U20AqvYB7FAys5BRqfQIPCRqrcaIE
 1y2woAwdoturnNdLGsPGzWD2UBumE9Ib8CwFWzzIVjISH6N7Tus1jKaOwi1TnSlk
 s/hxwGy/1Aa04e6NrxvJUeE/2ftBNtELrszLxs/1kzQDGtjzEf2RXa3h4X/cJEn4
 3hSvD4diFL4NfAJQompUHfP4PaqPAwOHW6V1tEQ7pz2uyXzJa++QzIE2ia/i3k72
 I2jhCqRjzkGTU4CO8ghjISd+6WiktAR1Ya7t4BaDYqYVcVfAwBsMsX8drKDN2PNB
 BBzA/BlQ3H+n6EksY/T3
 =C4f7
 -----END PGP SIGNATURE-----

Merge tag 'sunxi-fixes-for-4.6' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into fixes

Allwinner fixes for 4.6

A single regulator fix

* tag 'sunxi-fixes-for-4.6' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  ARM: dts: sun8i-q8-common: Do not set constraints on dc1sw regulator
2016-04-29 12:04:02 -07:00
Arnd Bergmann 04b9665b54 ARM: davinci: only use NVMEM when available
The davinci platform contains code that calls into the nvmem
subsystem, but that might be a loadable module, causing a
link error:

arch/arm/mach-davinci/built-in.o: In function `davinci_get_mac_addr':
:(.text+0x1088): undefined reference to `nvmem_device_read'
arch/arm/mach-davinci/built-in.o: In function `read_factory_config':
:(.text+0x214c): undefined reference to `nvmem_device_read'

Also, when NVMEM is completely disabled, the functions fail with
nonobvious error messages.

This ensures we only call the API functions when the code is actually
reachable from the board file, and otherwise prints a unique log
message.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: bec3c11bad ("misc: at24: replace memory_accessor with nvmem_device_read")
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2016-04-29 11:58:38 -07:00
Linus Torvalds 92c19ea953 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "Two boot crash fixes and an IRQ handling crash fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/apic: Handle zero vector gracefully in clear_vector_irq()
  Revert "x86/mm/32: Set NX in __supported_pte_mask before enabling paging"
  xen/qspinlock: Don't kick CPU if IRQ is not initialized
2016-04-28 20:24:27 -07:00
Linus Torvalds 814dd9481d Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "x86 PMU driver fixes plus a core code race fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Fix incorrect lbr_sel_mask value
  perf/x86/intel/pt: Don't die on VMXON
  perf/core: Fix perf_event_open() vs. execve() race
  perf/x86/amd: Set the size of event map array to PERF_COUNT_HW_MAX
  perf/core: Make sysctl_perf_cpu_time_max_percent conform to documentation
  perf/x86/intel/rapl: Add missing Haswell model
  perf/x86/intel: Add model number for Skylake Server to perf
2016-04-28 20:19:04 -07:00
Linus Torvalds cf681c2ebc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
 "Three more bug fixes for 4.6

   - Due to a race in the dynamic page table code a multi-threaded
     program can cause a translation specification exception.  With
     panic_on_oops a user space program can crash the system.

   - An information leak with the /dev/sclp device.

   - A use after free in the s390 PCI code"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/sclp_ctl: fix potential information leak with /dev/sclp
  s390/mm: fix asce_bits handling with dynamic pagetable levels
  s390/pci: fix use after free in dma_init
2016-04-28 18:52:11 -07:00
Arnd Bergmann 6383190203 Second Round of Renesas ARM Based SoC Fixes for v4.6
* Don't disable referenced optional scif clock
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXIUSSAAoJENfPZGlqN0++NxUP/iExGz3SUIwOMh9vcq4zl6Iz
 LSvZMo26XYkF4/HBOAfrtNGxfFZnZRPOLhQ1K757YJejvo7uPxp6loOxolfe93GI
 o92dMCRWCFN7IcmGX+JOlcnMkyG4o8fUjgrPm3V5DUV3+bn7UBYnkD91RXgFiMxw
 2it4mas1sDajEzgJ16AJK/JT/x0amrMzZp9dieO/7++g1lLp8SToxDTtJarWgrkc
 OytMGN96fxfvKKSjDC/MUD7vq12+yVQXHYlxIo+E851fP42xqhUuc070/xPbtRqm
 9EsGPoqF9CQL5c4NY9TbXtY2gD/cvHWd0ojbPtHPGpg7vMXGBSLIDBn7pBEmu5oK
 5ivMXtSSIXX2lr0hGnJM27NmfSx/JGQiJhW/BdyYrMJgTS7/Sji3/Vau0+aEqxt/
 SxpZQf0xcVKd+xd+ZnvBB7b3ffBbdkAPAYVAv/Y452oTWlUs6yH76nvMUqAf7dy/
 wMfHGucxtNhKM8jB/iS3Z2aWMcWDZxH+B3Q/PwmkjUxJLxj9Db2bKQ/2Gn6IrX3B
 dl+S2ZrGC/n+Qqh7+aLoqbtAp7hn5i43fZIe3UL6xYf90kWi/D7iOz+w/LaHX7YE
 qlTF4lInwy39Y58PXkLNgivaS0zSFCZ3gWFk7hg0gXBPQlnLYsIZ9dFqGMF4uQZt
 2Qj3ebjkIq37eM20l7cd
 =ySSs
 -----END PGP SIGNATURE-----

Merge tag 'renesas-fixes2-for-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

Merge "Second Round of Renesas ARM Based SoC Fixes for v4.6" from Simon Horman:

* Don't disable referenced optional scif clock

* tag 'renesas-fixes2-for-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  arm64: dts: r8a7795: Don't disable referenced optional scif clock
  ARM: shmobile: timer: Fix preset_lpj leading to too short delays
  Revert "ARM: dts: porter: Enable SCIF_CLK frequency and pins"
  ARM: dts: r8a7791: Don't disable referenced optional clocks
2016-04-28 17:46:27 +02:00
Arnd Bergmann 94379acca0 Fixes for omaps for v4.6-rc cycle. All dts fixes, mostly
affecting voltages and pinctrl for various device drivers:
 
 - Regulator minimum voltage fixes for omap5
 
 - ISP syscon register offset fix for omap3
 
 - Fix regulator initial modes for n900
 
 - Fix omap5 pinctrl wkup instance size
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXH6kGAAoJEBvUPslcq6Vz9kIP/3TaFg7PpMfCAIN5lL0RbMf+
 cHOxwuPZ3qzBXbL0cqGYx9RuhIYwBHCmOTG7xBMn5IEQD3mIRi7LZsAKy5Uam79C
 a5xXGOjWeDV6e9Tq8NA4Yh5VpO+eSlDCcuwq2jDN7Uh6iLv19igf3WoHgjVyj+oD
 Axa6I5CBGkTNunU3Z4lSCOj3creR8ulg0wUyLyKp/8CKAhOqH3zf9hP91Oe2zg8C
 EvrtC021DOOxhoreMX7R9e1Sa0aJBK7WNFbhHYMReRL7Ri8WldDS6KgwHfzTlohR
 9QC44j76fZGtGRf5xfIcHyiYlHOrYbAsxn51arNlVuHy55JO8ODk/rlobRD+Begg
 P+R6OzYwtnlTNQQUc95A2gzpOuqq8a2P3mKhXdnWYpExyCboRtiVU1PiV40PdmdD
 z3YwF76OUJ2G0EwQ2rIjT/oSxzwB/qzX8dJO6Rmk559wkafZoIfSiGA7ROygsfYQ
 A4/EHpPQv6DI/NXcUA/aefGODMe4x9nGmJCDWbZhRHtNcYkiHxNKy6P05r9dI/yi
 wNesiYoV+2RAswYRTgkCEjPlrDQ+WDz5ADKAQGatdwa4VxnC/VsPfmwBbmikLVEf
 1GhI1x5WAiOECEhHcB2cvVs9pACMowGyoG5RPNOqGUJo8HNpNclU6OYg4CYocx0y
 3qT9gdmD1ISThQ+iNOEd
 =OP/B
 -----END PGP SIGNATURE-----

Merge tag 'omap-for-v4.6/fixes-rc5-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Fixes for omaps for v4.6-rc cycle. All dts fixes, mostly
affecting voltages and pinctrl for various device drivers:

- Regulator minimum voltage fixes for omap5

- ISP syscon register offset fix for omap3

- Fix regulator initial modes for n900

- Fix omap5 pinctrl wkup instance size

* tag 'omap-for-v4.6/fixes-rc5-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: omap5: fix range of permitted wakeup pinmux registers
  ARM: dts: omap3-n900: Specify peripherals LDO regulators initial mode
  ARM: dts: omap3: Fix ISP syscon register offset
  ARM: dts: omap5-cm-t54: fix ldo1_reg and ldo4_reg ranges
  ARM: dts: omap5-board-common: fix ldo1_reg and ldo4_reg ranges
2016-04-28 17:43:33 +02:00
Kan Liang cf3beb7c90 perf/x86/intel: Fix incorrect lbr_sel_mask value
This patch fixes a bug which was introduced by:

 b16a5b52eb ("perf/x86: Add option to disable reading branch flags/cycles")

In this patch, lbr_sel_mask is used to mask the lbr_select. But LBR_SEL_MASK
doesn't include the bit for LBR_CALL_STACK. So LBR call stack will never be
set in lbr_select.

This patch corrects the LBR_SEL_MASK by including all valid bits in
LBR_SELECT. Also, the LBR_CALL_STACK bit is different as other bit in
LBR_SELECT. It does not operate in suppress mode, so it needs to be
specially handled in intel_pmu_setup_hw_lbr_filter.

Signed-off-by: Kan Liang <kan.liang@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1461231010-4399-1-git-send-email-kan.liang@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-04-28 10:32:43 +02:00
Alexander Shishkin 1c5ac21a0e perf/x86/intel/pt: Don't die on VMXON
Some versions of Intel PT do not support tracing across VMXON, more
specifically, VMXON will clear TraceEn control bit and any attempt to
set it before VMXOFF will throw a #GP, which in the current state of
things will crash the kernel. Namely:

  $ perf record -e intel_pt// kvm -nographic

on such a machine will kill it.

To avoid this, notify the intel_pt driver before VMXON and after
VMXOFF so that it knows when not to enable itself.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: hpa@zytor.com
Link: http://lkml.kernel.org/r/87oa9dwrfk.fsf@ashishki-desk.ger.corp.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-04-28 10:32:42 +02:00
Adam Borowski 0a25556f84 perf/x86/amd: Set the size of event map array to PERF_COUNT_HW_MAX
The entry for PERF_COUNT_HW_REF_CPU_CYCLES is not used on AMD, but is
referenced by filter_events() which expects undefined events to have a
value of 0.

Found via KASAN:

  UBSAN: Undefined behaviour in arch/x86/events/amd/core.c:132:30
  index 9 is out of range for type 'u64 [9]'
  UBSAN: Undefined behaviour in arch/x86/events/amd/core.c:132:9
  load of address ffffffff81c021c8 with insufficient space for an object of type 'const u64'

Signed-off-by: Adam Borowski <kilobyte@angband.pl>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1461749731-30979-1-git-send-email-kilobyte@angband.pl
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-04-28 10:20:25 +02:00
Keith Busch 1bdb897039 x86/apic: Handle zero vector gracefully in clear_vector_irq()
If x86_vector_alloc_irq() fails x86_vector_free_irqs() is invoked to cleanup
the already allocated vectors. This subsequently calls clear_vector_irq().

The failed irq has no vector assigned, which triggers the BUG_ON(!vector) in
clear_vector_irq().

We cannot suppress the call to x86_vector_free_irqs() for the failed
interrupt, because the other data related to this irq must be cleaned up as
well. So calling clear_vector_irq() with vector == 0 is legitimate.

Remove the BUG_ON and return if vector is zero,

[ tglx: Massaged changelog ]

Fixes: b5dc8e6c21 "x86/irq: Use hierarchical irqdomain to manage CPU interrupt vectors"
Signed-off-by: Keith Busch <keith.busch@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-04-28 09:53:06 +02:00
Sascha Hauer 5616f36713 ARM: SoCFPGA: Fix secondary CPU startup in thumb2 kernel
The secondary CPU starts up in ARM mode. When the kernel is compiled in
thumb2 mode we have to explicitly compile the secondary startup
trampoline in ARM mode, otherwise the CPU will go to Nirvana.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reported-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Suggested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
2016-04-27 15:19:21 -07:00
David S. Miller 49fa523046 sparc64: Fix bootup regressions on some Kconfig combinations.
The system call tracing bug fix mentioned in the Fixes tag
below increased the amount of assembler code in the sequence
of assembler files included by head_64.S

This caused to total set of code to exceed 0x4000 bytes in
size, which overflows the expression in head_64.S that works
to place swapper_tsb at address 0x408000.

When this is violated, the TSB is not properly aligned, and
also the trap table is not aligned properly either.  All of
this together results in failed boots.

So, do two things:

1) Simplify some code by using ba,a instead of ba/nop to get
   those bytes back.

2) Add a linker script assertion to make sure that if this
   happens again the build will fail.

Fixes: 1a40b95374 ("sparc: Fix system call tracing register handling.")
Reported-by: Meelis Roos <mroos@linux.ee>
Reported-by: Joerg Abraham <joerg.abraham@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-27 17:27:37 -04:00
Linus Torvalds 24131a61ec ARC fixes for 4.6-rc6
- LOCKDEP now words for ARCv2 builds
  - Enabling DT reserved-memory binding to work (for forthcoming HDMI driver)
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXIMkcAAoJEGnX8d3iisJeHdkP/1Eb+V6asWOPVGinbdKs0nhs
 xdnFiBVesgdfXKBxY/K1GN6bVNUqaPNVRk7Y1fWFzS6O2tgVMMDFz+4FebU6sDMv
 wiQuxqzEYhyaiqNvw2JUH60Y5GiCjWFLMfgR2FKCkUM99NZm/2DFos2hPE81K2yc
 4JfEQoPcsuYYN6nheMKa0sjomGHg6qIL4wi3uvB3RCrbqs1MbauKpsbdbNF3thqZ
 xpeHavHLRLUTnN/lIf7Z1SwSh6S0Ey7YFLePxsC48vZCL0a8L1HfFSfvjcxuHBMU
 cGsRXWQmwVjPUeEC9JIPcDkbEfQ1nlezU8lZcg7PJHOt4DByxN3sCngAPKt6Skls
 I2Ql5tP12IUmuWv4zpM7VP/ZZvC5EOh4RmG2xQwuV+rtDilkYHZrUPx7PdilRt3S
 a+A+FoYMgczdTTSCJnI0kJYADmPtz/6e1N9rSyzzmVnDmSPR9hClO9dENtpSwiXD
 Jtpo4tBsMLyw6+Oj68e70c58t8ek9PObR1lIqZ3zJ97hvgACjjpeDytVjv7oPpYH
 scTUfx69s6qF96Wn+y44Iw1gRV896UFlLmHtX9Hk0BtuVdjZuwOIF1Kqfsk6SYsJ
 0WFdnxoNJHPJVWkp+Pmrz7g8BaUxfAtc7Ly6C+8yUUa1nQswYQmrK+84uKLVjiWl
 E2sBDIJl2Xu2E7amTJss
 =rlDa
 -----END PGP SIGNATURE-----

Merge tag 'arc-4.6-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:

 - lockdep now works for ARCv2 builds

 - enable DT reserved-memory binding (for forthcoming HDMI driver)

* tag 'arc-4.6-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: add support for reserved memory defined by device tree
  ARC: support generic per-device coherent dma mem
  Documentation: dt: arc: fix spelling mistakes
  ARCv2: Enable LOCKDEP
2016-04-27 09:46:21 -07:00
Linus Torvalds 508fea71c6 nios2 fix for v4.6
nios2: memset: use the right constraint modifier for the %4 output operand
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXIH+FAAoJEFWoEK+e3syCfRoQAMPXIiWR/V/dLn3OX8f8CeA6
 I9duVqMrKrVh/a+bwxzmVJkumm0xzqYnOyhOpX5fZd3Nx44Q4NynJakwgWpMDVAI
 +xXxNtHZUhjcRC4EuqJW677plR0Uq8bWY2UibpARPHfB9d0arJOCuL11vdGCAjkg
 lWeVzUFg7iB9n0tRFwvsN29EcRZDo7+WbJh3cGIfTYNbcihJfiAAlmNyXS7XFiBY
 DqSYyTXIc8scH1q66gArTnyDryvM7cEZ+zyYoX9v8/E/+xPLLLhogthtqf3u4opn
 J/70k1LBgzgHCYrlEG8vvd1kCr114PLo7RlgkwJqdAtVhtMAtcGZFfkVQkSo7R3h
 gHQHf8f0exg3JKp0VesB443FyaIvpCNkth3eGdNMWunhCPB4bXE5W+hg5J5gZBNi
 1Ft9VB9Ug/8sh9Es4muinNX1kR5Fc8IWQqIa2U/OCt4O2wR1aFanJvaRqeCozbES
 SpbRAOoXtzOZ0xRPZGPQpqP6ggfizq9Zil2ZTeXbNPBRybFvmEpgewdJYqvrNwZj
 pbgB1+7zVcsfGTiMhJ+d1rLUX/oeMuUWT+eHY1jM1k+gTQVUo6k8KNVoaiNKa9z5
 cZh+XqgWKE6Qv4DVRnj+ouvDuglhwqIAyI3oXElghrYmCWxjvVKCXowQhnSq727M
 th2iyocnFMjIVWd5u3b7
 =PRJ4
 -----END PGP SIGNATURE-----

Merge tag 'nios2-v4.6-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2

Pull arch/nios2 fix from Ley Foon Tan:
 "memset: use the right constraint modifier for the %4 output operand"

* tag 'nios2-v4.6-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2:
  nios2: memset: use the right constraint modifier for the %4 output operand
2016-04-27 09:33:24 -07:00
Alexey Brodkin 1b10cb21d8 ARC: add support for reserved memory defined by device tree
Enable reserved memory initialization from device tree.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-04-27 17:06:56 +05:30
Alexey Brodkin 32ed9a0e0d ARC: support generic per-device coherent dma mem
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-04-27 17:06:55 +05:30
Arnd Bergmann 258fc497fa Fix for more theoretical than practical OOPS on first turn on of a exynos
power domain, if there was no turn off before. Usually all power domains
 are on, so the first action is to turn off but some older bootloaders
 might behave differently.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXIFm0AAoJEME3ZuaGi4PX+5gP/jnJjdv4oPr0JpPLjt80WLw5
 xIKwa83octPgLNMIH1yn2RM53jWSAgEiT5hcCC11Tp5atLGj8N4NtlpOsfrvLyo3
 1OF36uNI3Fnu1n/j4xNfjJeWSTtkf8wls6/lQrK70hWf8IGgfjNZMCAEGcdcV5Y0
 QlhTPrGcwkgHNv96PaCw2n5wKYa+DnQzbHmuuj6bHJCb5znsnpXdXgiLwrYlYsej
 Qw9bW9L3kQwxdqjfcxEvWvhz85ACcGHW3x1r1+5V2GP2X01bcBu2bL+ylgYrqlx4
 lycmPEM/tkvgqONUyKsM3Bf8b9//ph0IClDmuxEwAkPKM80DP80kNBsqdPe70SkK
 ryFgQkAPxkmJdsNUJa3ZR5DlENO9H1hL1nNC9esSJyXnT+9XwL/BtfMXED5M3+gq
 QbHKD2almeKq5cDXIQzOQuZ4VWsYb7l0orH0OFEJAMLHohkz9TH2ZawpoFZl8A5h
 Zutrh/GlDGGzl7p7jq1YOOO0EaPZkRF8MB3V1y/pgVdGtqUqf6zvsfwwBYBIRHmw
 EWdHk5A34ZlBj8dVgW5YFJHxrcNt71B26KhNSRAsNQW2DdbjiwXBk/ZnRb6/loaA
 okgqdMKegZhsnlDAygHaPl16pyihUHvs0SN6BC87n1lWTywVRf+GcAk/E3X2rBiQ
 pw0h+GGQmS4+/0qttjgu
 =Ubwx
 -----END PGP SIGNATURE-----

Merge tag 'samsung-fixes-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into fixes

Fix for more theoretical than practical OOPS on first turn on of a exynos
power domain, if there was no turn off before. Usually all power domains
are on, so the first action is to turn off but some older bootloaders
might behave differently.

* tag 'samsung-fixes-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
  ARM: EXYNOS: Properly skip unitialized parent clock in power domain on
2016-04-27 11:00:00 +02:00
Romain Perier a8950e49bd nios2: memset: use the right constraint modifier for the %4 output operand
Depending on the size of the area to be memset'ed, the nios2 memset implementation
either uses a naive loop (for buffers smaller or equal than 8 bytes) or a more optimized
implementation (for buffers larger than 8 bytes). This implementation does 4-byte stores
rather than 1-byte stores to speed up memset.

However, we discovered that on our nios2 platform, memset() was not properly setting the
buffer to the expected value. A memset of 0xff would not set the entire buffer to 0xff, but to:

0xff 0x00 0xff 0x00 0xff 0x00 0xff 0x00 ...

Which is obviously incorrect. Our investigation has revealed that the problem lies in the
incorrect constraints used in the inline assembly.

The following piece of assembly, from the nios2 memset implementation, is supposed to
create a 4-byte value that repeats 4 times the 1-byte pattern passed as memset argument:

/* fill8 %3, %5 (c & 0xff) */
"       slli    %4, %5, 8\n"
"       or      %4, %4, %5\n"
"       slli    %3, %4, 16\n"
"       or      %3, %3, %4\n"

However, depending on the compiler and optimization level, this code might be compiled as:

34:	280a923a 	slli	r5,r5,8
38:	294ab03a 	or	r5,r5,r5
3c:	2808943a 	slli	r4,r5,16
40:	2148b03a 	or	r4,r4,r5

This is wrong because r5 gets used both for %5 and %4, which leads to the final pattern
stored in r4 to be 0xff00ff00 rather than the expected 0xffffffff.

%4 is defined with the "=r" constraint, i.e as an output operand. However, as explained in
http://www.ethernut.de/en/documents/arm-inline-asm.html, this does not prevent gcc from
using the same register for an output operand (%4) and input operand (%5). By using the
constraint modifier '&', we indicate that the register should be used for output only. With this
change, we get the following assembly output:

34:	2810923a 	slli	r8,r5,8
38:	4150b03a 	or	r8,r8,r5
3c:	400e943a 	slli	r7,r8,16
40:	3a0eb03a 	or	r7,r7,r8

Which correctly produces the 0xffffffff pattern when 0xff is passed as the memset() pattern.

It is worth mentioning the observed consequence of this bug: we were hitting the kernel
BUG() in mm/bootmem.c:__free() that verifies when marking a page as free that it was
previously marked as occupied (i.e that the bit was set to 1). The entire bootmem bitmap is
set to 0xff bit via a memset() during the bootmem initialization. The bootmem_free() call right
after the initialization was finding some bits to be set to 0, which didn't make sense since the
bitmap has just been memset'ed to 0xff. Except that due to the bug explained above, the
bitmap was in fact initialized to 0xff00ff00.

Thanks to Marek Vasut for his help and feedback.

Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Ley Foon Tan <lftan@altera.com>
2016-04-27 16:35:55 +08:00
Rui Salvaterra d701cca674 powerpc: wire up preadv2 and pwritev2 syscalls
Wire up preadv2/pwritev2 in the same way as preadv/pwritev. Fixes two
build warnings on ppc64.

mpe: Lightly tested with fio (slightly hacked to add the syscall
wrappers):

  fio-4217  [009] ....  1304.635300: sys_preadv2(fd: 3, vec:
  10025821de0, vlen: 1, pos_l: 6253000, pos_h: 0, flags: 1)
  fio-4217  [009] ....  1304.635474: sys_preadv2 -> 0x1000

Signed-off-by: Rui Salvaterra <rsalvaterra@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-04-27 16:47:55 +10:00
Linus Torvalds 91ea692f87 Here are the latest bug fixes for ARM SoCs, mostly addressing
recent regressions. Changes are across several platforms, so
 I'm listing every change separately here.
 
 Regressions since 4.5:
 
  - A correction of the psci firmware DT binding, to prevent
    users from relying on unintended semantics
 
  - Actually getting the newly merged clock driver for some OMAP
    platforms to work
 
  - A revert of patches for the Qualcomm BAM, these need to be
    reworked for 4.7 to avoid breaking boards other than the one
    they were intended for
 
  - A correction for the I2C device nodes on the Socionext Uniphier
    platform
 
  - i.MX SDHCI was broken for non-DT platforms due to a change
    with the setting of the DMA mask
 
  - A revert of a patch that accidentally added a nonexisting
    clock on the Rensas "Porter" board
 
  - A couple of OMAP fixes that are all related to suspend after
    the power domain changes for dra7
 
  - On Mediatek, revert part of the power domain initialization
    changes that broke mt8173-evb
 
 Fixes for older bugs:
 
  - Workaround for an "external abort" in the omap34xx
    suspend/resume code.
 
  - The USB1/eSATA should not be listed as an excon device on
    am57xx-beagle-x15 (broken since v4.0)
 
  - A v4.5 regression in the TI AM33xx and AM43XX DT specifying
    incorrect DMA request lines for the GPMC
 
  - The jiffies calibration on Renesas platforms was incorrect
    for some modern CPU cores.
 
  - A hardware errata woraround for clockdomains on TI DRA7
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIVAwUAVx+5v2CrR//JCVInAQJ/ZBAArI3ZiR+Jj2dZCm9c7+PjlDWngJpBME3V
 o4aF9CeyuA/eyx+QtKAq1ScG2eRIbfab03XGBMEHXpKmmiTXYFIcLFHewwSGBYsy
 XUsNO+ZKsw92ImSdcX9p45BjkAADJvUwX5BzDlfOQ5mNX+o0Godb/8Mi2Y6RIqTK
 5C0xQ0YE8ZN7xtyNzFylaI+CL6wsVLy6PUKig7UIrOOXQK3Tzt4mEz2ksrSBJzON
 RiG7kPLf+Zd013WyF/ZUdC3VErDOP7C1Z+YRcK+2rxjlL+4oJUznsoaBYJgLUV+T
 GmcD0TZNwt6x6FWF6cSiUa+gl+6oWRZwTGfUooS1zEcuLHBsONdMtVat4Z01RYos
 rdMvFgZ6bxG7n4tajI2jg1gokGfyMfYuKwnHuA8Ynzn4N/VcnnbfxPRyV/RMLN0W
 ad/e12SlLMX1XahrD9uo/oH/X73gHPnbHlLLzWfDfnyvNGvWiW3SNklFT03q/Yn+
 fgfB0OnzG8+a3c/LHZbtAo/yYYLdqIuOg8I40AizN3CKHamUWPAjgFfdHdQADVV8
 yC5ugVB6x7RYID/49IPT1C3n/SjoypYyRbo30ipqyz2dTf6kz35SY/YjYNSaIYvY
 QfnGFuywsKsTprGAzI+x/fGo61Ve0/XkK9RPt0opU1+WdYr3sE+ufGVLVn4g4Cw3
 wfd20UTVwGs=
 =YgL2
 -----END PGP SIGNATURE-----

Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Here are the latest bug fixes for ARM SoCs, mostly addressing recent
  regressions.  Changes are across several platforms, so I'm listing
  every change separately here.

  Regressions since 4.5:

   - A correction of the psci firmware DT binding, to prevent users from
     relying on unintended semantics

   - Actually getting the newly merged clock driver for some OMAP
     platforms to work

   - A revert of patches for the Qualcomm BAM, these need to be reworked
     for 4.7 to avoid breaking boards other than the one they were
     intended for

   - A correction for the I2C device nodes on the Socionext Uniphier
     platform

   - i.MX SDHCI was broken for non-DT platforms due to a change with the
     setting of the DMA mask

   - A revert of a patch that accidentally added a nonexisting clock on
     the Rensas "Porter" board

   - A couple of OMAP fixes that are all related to suspend after the
     power domain changes for dra7

   - On Mediatek, revert part of the power domain initialization changes
     that broke mt8173-evb

  Fixes for older bugs:

   - Workaround for an "external abort" in the omap34xx suspend/resume
     code.

   - The USB1/eSATA should not be listed as an excon device on
     am57xx-beagle-x15 (broken since v4.0)

   - A v4.5 regression in the TI AM33xx and AM43XX DT specifying
     incorrect DMA request lines for the GPMC

   - The jiffies calibration on Renesas platforms was incorrect for some
     modern CPU cores.

   - A hardware errata woraround for clockdomains on TI DRA7"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  drivers: firmware: psci: unify enable-method binding on ARM {64,32}-bit systems
  arm64: dts: uniphier: fix I2C nodes of PH1-LD20
  ARM: shmobile: timer: Fix preset_lpj leading to too short delays
  Revert "ARM: dts: porter: Enable SCIF_CLK frequency and pins"
  ARM: dts: r8a7791: Don't disable referenced optional clocks
  Revert "ARM: OMAP: Catch callers of revision information prior to it being populated"
  ARM: OMAP3: Fix external abort on 36xx waking from off mode idle
  ARM: dts: am57xx-beagle-x15: remove extcon_usb1
  ARM: dts: am437x: Fix GPMC dma properties
  ARM: dts: am33xx: Fix GPMC dma properties
  Revert "soc: mediatek: SCPSYS: Fix double enabling of regulators"
  ARM: mach-imx: sdhci-esdhc-imx: initialize DMA mask
  ARM: DRA7: clockdomain: Implement timer workaround for errata i874
  ARM: OMAP: Catch callers of revision information prior to it being populated
  ARM: dts: dra7: Correct clock tree for sys_32k_ck
  ARM: OMAP: DRA7: Provide proper class to omap2_set_globals_tap
  ARM: OMAP: DRA7: wakeupgen: Skip SAR save for wakeupgen
  Revert "dts: msm8974: Add dma channels for blsp2_i2c1 node"
  Revert "dts: msm8974: Add blsp2_bam dma node"
  ARM: dts: Add clocks for dm814x ADPLL
2016-04-26 16:17:01 -07:00
Andy Lutomirski e16d8a6cbb Revert "x86/mm/32: Set NX in __supported_pte_mask before enabling paging"
This reverts commit 320d25b6a0.

This change was problematic for a couple of reasons:

1. It missed a some entry points (Xen things and 64-bit native).

2. The entry it changed can be executed more than once.  This isn't
   really a problem, but it conflated per-cpu state setup and global
   state setup.

3. It broke 64-bit non-NX.  64-bit non-NX worked the other way around from
   32-bit -- __supported_pte_mask had NX set initially and was *cleared*
   in x86_configure_nx.  With the patch applied, it never got cleared.

Reported-and-tested-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/59bd15f7f4b56b633a611b7f70876c6d2ad01a98.1461685884.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-04-26 19:52:57 +02:00
H. Nikolaus Schaller 7472931f7f ARM: dts: omap5: fix range of permitted wakeup pinmux registers
otherwise we can't define gpio1_wk14

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-04-26 10:16:12 -07:00
Ivaylo Dimitrov 0698178c60 ARM: dts: omap3-n900: Specify peripherals LDO regulators initial mode
Without that, regulators are left in the mode last set by the bootloader or
by the kernel the device was rebooted from. This leads to various problems,
like non-working peripherals.

Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Reviewed-By: Sebastian Reichel <sre@kernel.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-04-26 10:13:48 -07:00
Ivaylo Dimitrov e180feaf79 ARM: dts: omap3: Fix ISP syscon register offset
According to the TRM, SCM CONTROL_CSIRXFE register is on offset 0x6c

Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Reviewed-By: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-04-26 10:11:35 -07:00
Tomi Valkeinen 5607959a4d ARM: dts: omap5-cm-t54: fix ldo1_reg and ldo4_reg ranges
ldo4_reg is connected to DSS, and should always be 1.8V. However the The
dts defines a range of 1.5V-1.8V, which requires somethings to set the
actual voltage at runtime. Currently we set the voltage in omapdss
driver.

As the voltage must always be 1.8V, let's just define the range to 1.8V
so that the driver doesn't need to deal with the voltage. In fact, the
driver should not touch the voltage, except in the cases where the
voltage needs to be changed at runtime.

I presume the situation is the same for ldo1_reg, used for CSI, although
I think it is not currently used in the mainline.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-04-26 09:52:13 -07:00
Tomi Valkeinen 5086e5c796 ARM: dts: omap5-board-common: fix ldo1_reg and ldo4_reg ranges
ldo4_reg is connected to DSS, and should always be 1.8V. However the
The dts defines a range of 1.5V-1.8V, which requires somethings to set
the actual voltage at runtime. Currently we set the voltage in omapdss
driver.

As the voltage must always be 1.8V, let's just define the range to 1.8V
so that the driver doesn't need to deal with the voltage. In fact, the
driver should not touch the voltage, except in the cases where the
voltage needs to be changed at runtime.

I presume the situation is the same for ldo1_reg, used for CSI, although
I think it is not currently used in the mainline.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-04-26 09:52:13 -07:00
Geert Uytterhoeven f5515f9cdf arm64: dts: r8a7795: Don't disable referenced optional scif clock
clk_get() on a disabled clock node will return -EPROBE_DEFER, which can
cause drivers to be deferred forever if such clocks are referenced in
their devices' clocks properties.

Update the disabled external scif clock node so that it
is not disabled to prevent this.

Reported-by: Jürg Billeter <j@bitron.ch>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
[simon: fix for v4.6 extracted from a larger patch targeted at v4.7]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-04-26 09:44:48 +10:00
Kevin Hilman 004cb62efd Enable dm814x and dra62x clock driver. This branch has a dependency
to the clk-ti branch from the Linux clk tree for the ADPLL clock driver.
 Otherwise things won't keep booting properly when we flip over to use
 the clock driver instead of fixed clocks set up by the bootloader.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJW2MN/AAoJEBvUPslcq6VzVqEP/A2qxFhMYyf/q0Za54RNRHjj
 iHbpxmfPUrFIGO/IQqkk7bl5Ufgs+L+uW+mjoe0CvIYGEoVDY/cfe3AZW734cGMO
 rLbs3CovoHst2UTZbcKVRs/QjkN+R9nvowvvqK87vSbpAbMX7pRrEcfZSN77T4ej
 vRbtRyD0msNCm8s0TgdpQ6ObK0GHmfqtq3GFA/g5Rs5m1X7h9PaD+PWUsVDugKyM
 9bEmGZSyOaRN5qGrOX/PTTKK3OiCOSJXB/8tnRgNW7DaISop+KJwxzMhBHyx2iKP
 JaD5lDJk/ArE+4Za0FmSpug8muUHLHH+htCu76uU6qi/s7+q8g9UR9ewzfLg7/rG
 wYl8IwDBVxWbi5PLnHPRrghGheEkM2ykiqEp5DqlZ1B7vfGv4Wl/3ZxiL1ZO5FZv
 jre1yHm5sguLCtA6BErWi69SCI3rpi4GrDQuYnlAbg9ABRH+YBVZ+3lCqtBVyh6J
 5yHexIELEEOUHHT2KLPNi7HexzK6xtMpsh4QlP1Yxt2o6dVI2LmTS+oKtU6QAjSn
 WE5pbLd9XZUBaDO4jw3T01edhGVpf2OxmtGSOd/ptF5JjZoDA2Kg+NcDE0eTPL72
 v7yVlNVU3g8PlD1EfRENi/KL0K4GLNq3eT2WCFQYp/nYuN1dVkk5xraEv3w7N0iZ
 vGlh9twbt7VvjiGoImcF
 =2Lew
 -----END PGP SIGNATURE-----

Merge tag 'omap-for-v4.6/dt-ti81xx-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Enable dm814x and dra62x clock driver. This branch has a dependency
to the clk-ti branch from the Linux clk tree for the ADPLL clock driver.
Otherwise things won't keep booting properly when we flip over to use
the clock driver instead of fixed clocks set up by the bootloader.

* tag 'omap-for-v4.6/dt-ti81xx-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: Add clocks for dm814x ADPLL
2016-04-25 08:55:17 -07:00
Krzysztof Kozlowski a0a966b838 ARM: EXYNOS: Properly skip unitialized parent clock in power domain on
We want to skip reparenting a clock on turning on power domain, if we
do not have the parent yet. The parent is obtained when turning the
domain off. However due to a typo, the loop is continued on IS_ERR() of
clock being reparented, not on the IS_ERR() of the parent.

Theoretically this could lead to OOPS on first turn on of a power
domain, if there was no turn off before. Practically that should never
happen because all power domains are turned on by default (reset value,
bootloader does not turn off them usually) so the first action will be
always turn off.

Fixes: 29e5eea06b ("ARM: EXYNOS: Get current parent clock for power domain on/off")
Reported-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
2016-04-25 11:35:37 +02:00
Arnd Bergmann 92f27f98ce Qualcomm Fixes for v4.6-rc2
* Revert BAM usage on MSM8974 boards
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXAILWAAoJEFKiBbHx2RXVfoQQAOS9xxbdKIGEHL8tf++UF6ol
 cjiTq7++NIGjY63AvJ9kYD6x1i41cwwIIlm5hdy7NQBpJ6YjPqNSkOUPrPDtqIWJ
 Von/E0Sqkbqg8RsYoAZK+FMCPOmVceJ9mp/h3+Tk0+ANARmis7D3HLbdKtmO3Rqa
 zveV8X+Y3PcdDr7QWxkuSfYayjUWqI0BIwdq3W0VY/8Vt4iWzkwES+aDegNtFxlI
 Xeau0mzRJEIl0dG4S26BilcylQ3iOe1x1sVCcRJJILKP9CVOfhD8tzCw8MbIOcPk
 iLzI2J5q4Fnkiib+sygbbkXpSij9vraBitDC7L6pBoPibBAVy25sMAGUcWRwrZXZ
 oODZM5H43p7zYMNlNq3mDWPS0+jReGD42QsOEcg8QxCuXs66YfbuWidK1Kowg+oy
 VRVpXYs2YuqUlMz5zhUMpZvXy3hQwcNMrN8wLH/PSJ3fKIeFdSk+Q9gKW9PyZ60r
 uIuSYheN3UQxpeJ2Mr+hkPtuEoZxSsZIb5tq0mJZ9nNnfydYDoQYDGWLwUOABHRC
 Ju65ZQ8P+d15j0W4ai11rh2NshrLUVvLQHYQz1L+MyW9MlavKTCXkWPsvUzp6ffC
 T4WjK7cDnQVypc9ysI+Ir6/RI6WwCNHiSqEvHhBcIWNjxYh8iJHGubZ4qtmIjvPC
 WuxVd1s0O1e2gQ9kafhP
 =rDKB
 -----END PGP SIGNATURE-----

Merge tag 'qcom-fixes-for-4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux into fixes

Merge "Qualcomm Fixes for v4.6-rc2" from Andy Gross:

* Revert BAM usage on MSM8974 boards

* tag 'qcom-fixes-for-4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
  Revert "dts: msm8974: Add dma channels for blsp2_i2c1 node"
  Revert "dts: msm8974: Add blsp2_bam dma node"
2016-04-23 22:10:48 +02:00
Masahiro Yamada 56896ef5b9 arm64: dts: uniphier: fix I2C nodes of PH1-LD20
The I2C hardware blocks on this SoC are connected as follows:

  I2C0: external connection
  I2C1: external connection
  I2C2: internal connection
  I2C3: external connection
  I2C4: external connection
  I2C5: internal connection
  I2C6: no connection (not accessible)

Delete pinctrl from Ch2, add pinctrl to Ch4, and remove the Ch6 node.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2016-04-23 22:08:35 +02:00
Linus Torvalds 1ad9bf9fdc Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "Misc fixes: two EDAC driver fixes, a Xen crash fix, a HyperV log spam
  fix and a documentation fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86 EDAC, sb_edac.c: Take account of channel hashing when needed
  x86 EDAC, sb_edac.c: Repair damage introduced when "fixing" channel address
  x86/mm/xen: Suppress hugetlbfs in PV guests
  x86/doc: Correct limits in Documentation/x86/x86_64/mm.txt
  x86/hyperv: Avoid reporting bogus NMI status for Gen2 instances
2016-04-23 12:07:29 -07:00
Srinivas Pandruvada e1089602a3 perf/x86/intel/rapl: Add missing Haswell model
Added one missing Haswell model.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: bp@alien8.de
Cc: hpa@zytor.com
Link: http://lkml.kernel.org/r/1460907809-11897-1-git-send-email-srinivas.pandruvada@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-04-23 13:46:45 +02:00
Andi Kleen b89c173788 perf/x86/intel: Add model number for Skylake Server to perf
Everything the same as base Skylake, just a new model number.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1460751933-2264-1-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-04-23 13:46:44 +02:00
Ross Lagerwall 707e59ba49 xen/qspinlock: Don't kick CPU if IRQ is not initialized
The following commit:

  1fb3a8b2cf ("xen/spinlock: Fix locking path engaging too soon under PVHVM.")

... moved the initalization of the kicker interrupt until after
native_cpu_up() is called.

However, when using qspinlocks, a CPU may try to kick another CPU that is
spinning (because it has not yet initialized its kicker interrupt), resulting
in the following crash during boot:

  kernel BUG at /build/linux-Ay7j_C/linux-4.4.0/drivers/xen/events/events_base.c:1210!
  invalid opcode: 0000 [#1] SMP
  ...
  RIP: 0010:[<ffffffff814c97c9>]  [<ffffffff814c97c9>] xen_send_IPI_one+0x59/0x60
  ...
  Call Trace:
   [<ffffffff8102be9e>] xen_qlock_kick+0xe/0x10
   [<ffffffff810cabc2>] __pv_queued_spin_unlock+0xb2/0xf0
   [<ffffffff810ca6d1>] ? __raw_callee_save___pv_queued_spin_unlock+0x11/0x20
   [<ffffffff81052936>] ? check_tsc_warp+0x76/0x150
   [<ffffffff81052aa6>] check_tsc_sync_source+0x96/0x160
   [<ffffffff81051e28>] native_cpu_up+0x3d8/0x9f0
   [<ffffffff8102b315>] xen_hvm_cpu_up+0x35/0x80
   [<ffffffff8108198c>] _cpu_up+0x13c/0x180
   [<ffffffff81081a4a>] cpu_up+0x7a/0xa0
   [<ffffffff81f80dfc>] smp_init+0x7f/0x81
   [<ffffffff81f5a121>] kernel_init_freeable+0xef/0x212
   [<ffffffff81817f30>] ? rest_init+0x80/0x80
   [<ffffffff81817f3e>] kernel_init+0xe/0xe0
   [<ffffffff8182488f>] ret_from_fork+0x3f/0x70
   [<ffffffff81817f30>] ? rest_init+0x80/0x80

To fix this, only send the kick if the target CPU's interrupt has been
initialized. This check isn't racy, because the target is waiting for
the spinlock, so it won't have initialized the interrupt in the
meantime.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Cc: xen-devel@lists.xenproject.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-04-23 13:40:02 +02:00
Kevin Hilman e6d939bfd4 The i.MX fixes for 4.6:
- The sdhci-esdhc-imx DMA support is broken due to commit 7b91369b46
    ("mmc: sdhci: Set DMA mask when adding host").  It requires device's
    dma_mask be set up properly to get DMA work.  The fixing patch
    initializes the DMA mask to enable the access again.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJXDg+UAAoJEFBXWFqHsHzOxLEH/jbiBkmo4w1JYfOgVwTRF58h
 pCP+OmXvM5gmO0QoyxmxzmISQU8RYkk+dRrM8GNasp9TY3TAc+R6CzrOJrJ4uzFK
 oMuc5f/52/ExRt9MgeGYy/Cy05g1iqUCp2SucyUxrcPSC6I85QOqCIRUFqnuyP7L
 MtHuLudSCOKmAjtWpwHqoHG8/tlWQX2iw0YW8mn1SsSUau/ROtSP21mN6/NxOgcD
 tHg53u3Bq//kWyoccsJ8FbQz7SkKvPq5fOkW3aBv67ZkFuf7fqwve6dGGQ/ojkA0
 g5ikPmaExxH/E5pYFmtdzv6dN8D4n9SVMW5MV42p41JTdnqVmdFiraGwT0z1uf8=
 =Oq+h
 -----END PGP SIGNATURE-----

Merge tag 'imx-fixes-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes

Merge "ARM: i.MX fixes for 4.6" from Shawn Guo:

The i.MX fixes for 4.6:
 - The sdhci-esdhc-imx DMA support is broken due to commit 7b91369b46
   ("mmc: sdhci: Set DMA mask when adding host").  It requires device's
   dma_mask be set up properly to get DMA work.  The fixing patch
   initializes the DMA mask to enable the access again.

* tag 'imx-fixes-4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: mach-imx: sdhci-esdhc-imx: initialize DMA mask
2016-04-22 16:55:05 -07:00
Kevin Hilman 22c49e5a09 Fixes for omaps for v4.6-rc cycle:
- Clockdomain fix for dra7 timer interrupts
 
 - Two fixes for GPMC EDMA binding, I missed the need for a merge with
   GPMC changes and EDMA changes
 
 - Fix beagle-x15 eSATA by dropping misconfigured extcon_usb1
 
 - Fix occasional external aborts on 36xx with PM that we've been
   chasing for past few months. It turned out to be duplicate restore
   of INTC registers that can in some cases cause us to hit erratum 1.106.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXD8cCAAoJEBvUPslcq6VzKlEQAJsIi+p0Bk8ior9eqEphnWI5
 NdMcu0POJb/SVLPfLzH5WxM/8Rd81Se56uiy1Hpa9cqxFxfStQm9/ltU/8EJEvAC
 XnxwX78jfB7I6BcynKia+M/Sc4CgVxi41iq3lc1AUY5srN7kYyxFTljlMQMKwgTg
 QFM4sFFCARUifO+z3SejgaO3vde0cMlZPh4gGYEx01xxYoqYk5kdWxHN1nRBH9T2
 a/F7GrnMgTgALITP6oij9cb/uLyog7YraDc1fWQzAhm9JdneAbI21MHwkLsEB+Il
 EDGcyq9VKMO8nXD2sGlt1EIjnaPZAd45To/OECGd11N7qog79/LEo5gMN/Is76kO
 cx6nrvqGrOfynt2q3GyfMWiMRn36mk1gZ+FtOGCxRc0ROyqXfLyhKWKZkEK7aotf
 R6Ga/ufNRiw0Ded0XABlt2PD6PPWD+Ly5wiU8AwOraM7XW6415FK07fD+hhZczOG
 66wFC+J8nQGO7VecBrJOnqms2YnPlc4dgfVCo8jnAjRFtfPG9UjnPZBloxlDKMJB
 OSkVPtRLCHiVk1xG51TCKgIgwJ5s957ohb9ImTIikXHsdLu39F3P7Tx4LQfYS8pd
 B2AbktI0VYkJqiuaLjHdbxWBY8AL5UrZynn+pxjbVQcmuqgHGrDD7DWB8nmspvu0
 4HvovFXCm8NvRZBMJhh9
 =6rQp
 -----END PGP SIGNATURE-----

Merge tag 'omap-for-v4.6/fixes-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Merge "omap fixes for v4.6-rc cycle" from Tony Lindgren:

Fixes for omaps for v4.6-rc cycle:

- Clockdomain fix for dra7 timer interrupts

- Two fixes for GPMC EDMA binding, I missed the need for a merge with
  GPMC changes and EDMA changes

- Fix beagle-x15 eSATA by dropping misconfigured extcon_usb1

- Fix occasional external aborts on 36xx with PM that we've been
  chasing for past few months. It turned out to be duplicate restore
  of INTC registers that can in some cases cause us to hit erratum 1.106.

* tag 'omap-for-v4.6/fixes-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP3: Fix external abort on 36xx waking from off mode idle
  ARM: dts: am57xx-beagle-x15: remove extcon_usb1
  ARM: dts: am437x: Fix GPMC dma properties
  ARM: dts: am33xx: Fix GPMC dma properties
  ARM: DRA7: clockdomain: Implement timer workaround for errata i874
2016-04-22 16:53:49 -07:00
Linus Torvalds ddce192106 arm64 fixes:
- Cache invalidation fix for early CPU boot status update (incorrect
   cacheline)
 
 - of_put_node() missing in the spin_table code
 
 - EL1/El2 early init inconsistency when Virtualisation Host Extensions
   are present
 
 - RCU warning fix in the arm_pmu.c driver
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXGgsnAAoJEGvWsS0AyF7xEQ0P/1t9N459ttwATfBVkqZzUowJ
 w5hGGQmuq1zEKFsjsNWATcMTraLU4Kqoao6jDO5/uxGvRSaEGbwpU0nZPLuXghHb
 V6V0kc6LAh91AKxtnIyebaxSfBmDOrQb8dH/ZfOIL5SMPvhrrrG70axniKQq/46I
 uUfe8uVpSiqV+w9jUlJteWlugHW1ivtojpe1cNOoFuSc+I+jvrE87DPowxSBqs20
 CAsD2njdEtYV0C/NxFcuSJmhG3USi4r41VQ5mvqiQc3odgrF0sC0/Ytl7rPw9GIa
 qBLumJUyCYQcsV/wJ6deSKWSOddNTf/q1b0Dnbq/wMp4nLwYvO4QrePjNmfT0ZyI
 /i6HxUxAwYxbP1F790n0WZoRaZx9yNk/qjeneYtF5lgXbU61rf0zhmLPEJ5uo6x2
 GP85z1I0xRClq+Fa15qybq+zp10VlNsSkMZKhv03kmqnGRFNqxYEhzZhhHDJnQhq
 WeG8aVj7LJbeRRh0l6gYfIwu3HdO6dDKAqzqv54cDuwhiGPS46LbCLpZVa/C3B4K
 qyUprCt6FaBs528yysLewVcjmbUu6cvda27OB88Er/6C6jvKnKQ+20nVbzGOd7+V
 ex7kTXVe41rO3vWulBFDKB8Q3c02URpXJKmMsNVlbzNX77tLkDbd2Lyf5vSkJK7x
 JeRj/ua+r8rOdWS+Nhxb
 =/LTw
 -----END PGP SIGNATURE-----

Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - Cache invalidation fix for early CPU boot status update (incorrect
   cacheline)

 - of_put_node() missing in the spin_table code

 - EL1/El2 early init inconsistency when Virtualisation Host Extensions
   are present

 - RCU warning fix in the arm_pmu.c driver

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: Fix EL1/EL2 early init inconsistencies with VHE
  drivers/perf: arm-pmu: fix RCU usage on pmu resume from low-power
  arm64: spin-table: add missing of_node_put()
  arm64: fix invalidation of wrong __early_cpu_boot_status cacheline
2016-04-22 11:11:15 -07:00
Linus Torvalds ff061624e1 powerpc fixes for 4.6 #2
- scan_features() updates incorrect bits for REAL_LE from Anton Blanchard
  - Update cpu_user_features2 in scan_features() from Anton Blanchard
  - Update TM user feature bits in scan_features() from Anton Blanchard
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXGfRfAAoJEFHr6jzI4aWAeCQP+wVdFa4Q+T0uFQf/lQBPfQLa
 wDODtskmqwfWk2YqIv3LKTnrkubs8nGy2Vc5Tm27/G/x+uMPOrTD/eoBiG3DH8E3
 eiX1tlqO+oM8dm+g/FxGSCbkWSoYKQrc1QQ1oWtADPPhSm1xU0GYdPqQrDyAfFEr
 JEg5ifOkbTZ3VauuK2kXVxIgNHtwfPoeQfTEmKk7x1Pay0z3zNx65tKInGKmatL8
 7dS+Y8gPNODUfky61M1Y0f/KDwOsBO7gyiIdkkJxnYW1IAqTTsvK90fKPVzSfM0Y
 jnOBdlysIPsiXFNDjT0gBBBRm7McCZO/bZEjK7aSWUMP/FOWIR+HkB3+fpcB+o8u
 tbmMJ8AfHvz4PXzf0h0TySOy6uhA65LJfBnssBoZcCQyxTzdIQC7crDH2639L+8q
 djUYGzWXrplCq/r/uQrogY7a7Ff/UFW76mRMX1lj2hi8lpQEnr7sBPAqwEApgvtr
 WRqBkUjyuTWnnDSnen0NR1QMfh9zMNNjHHBaU+UJv0gU3lBRL+VpmFizsdjVk8/E
 0wC2l1lws3txxaWXGmpJNKve9P2+iEVfY5KAigkKO3yV5xUuwOhtED6sTKqTY5wR
 kp3AC+7fjUxQFJ4g4BVohakie5RR6LkLZ7xCwB0LWPff3LUIiHGelsd+ii1kjxwm
 /tiR9CYEO1O9KcKlwv8X
 =woiB
 -----END PGP SIGNATURE-----

Merge tag 'powerpc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Three powerpc cpu feature fixes from Anton Blanchard:

   - scan_features() updated incorrect bits for REAL_LE

   - update cpu_user_features2 in scan_features()

   - update TM user feature bits in scan_features()"

* tag 'powerpc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc: Update TM user feature bits in scan_features()
  powerpc: Update cpu_user_features2 in scan_features()
  powerpc: scan_features() updates incorrect bits for REAL_LE
2016-04-22 10:53:12 -07:00
Kevin Hilman c95e2e7edd Renesas ARM Based SoC Fixes for v4.6
* Correct preset_lpj calculation which may lead to too short delays
 * Correct handling of optional clocks on r8a7791 to restore
   access to the serial port the porter board
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXGEtmAAoJENfPZGlqN0++aYIP/RCANWvI9Z7VH/Y/NQ1f5t4Y
 l4Uv1/dSuIHJq44z0sLMD5gmDVKqP1NnCncfkZabDXceGm9Fk3DlFxeLd+ahMN+B
 dBtDpf1AA9Mr1AEoBrXjNimWSupvJalatqk3nWfLnjpGHQJOKTZCekikQb9WBA5t
 l5r5Pvu/leRfyg/wi10F3hq0a2drKbIbFDOzh37L7al9cvZTnyVZNcchb/vlqZmt
 kAi90crLUXvQ9eOw357kFBmigQF5r/fD0X3f5sFYyDlNldZg3chkyghiluiOcXDL
 eEc6TdHNT/a9hixqpW/Z1BinpvFF+vIjfUZBW9wXTRz0t9EX5Pxr9wSXWEY4+hmp
 DrI9eiEAbX8ltfjOo3Q7LgHstjZ6AJyk3CZJBWk8i2DLK5SEt6eum/BvKRmakTa+
 DLe+SES+uUfg1d35WEqhqPeO7JEybPAVyto++NrCRSkPeDeO32+h2O6yEsMBqEKC
 HFoV/V86Ufqq8MCiZkQBZJGNYqcTeKMiXzvte23tcAXXYmxMct5Z4HLCiFEM4paw
 yyThG9VZofe4pt03u9XqiZjEu23AopMpM9xDpUjK3CKYq6uaJxNoJcgJC6TBbkmT
 D7kdmhhlWCLeyr3pqblbqiWdK7Bx9B65aFhm/nilX0y4p3vvT46vMLvG4SgfFojv
 Ybr9ICHZMaTxJ1V32fty
 =k7qU
 -----END PGP SIGNATURE-----

Merge tag 'renesas-fixes-for-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes

Merge "Renesas ARM Based SoC Fixes for v4.6" from Simon Horman:

Renesas ARM Based SoC Fixes for v4.6

* Correct preset_lpj calculation which may lead to too short delays
* Correct handling of optional clocks on r8a7791 to restore
  access to the serial port the porter board

* tag 'renesas-fixes-for-v4.6' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  ARM: shmobile: timer: Fix preset_lpj leading to too short delays
  Revert "ARM: dts: porter: Enable SCIF_CLK frequency and pins"
  ARM: dts: r8a7791: Don't disable referenced optional clocks
2016-04-22 09:58:48 -07:00
Kevin Hilman c0e309138b Fixes for omaps against v4.6-rc2, mostly to fix suspend for beagle-x15
that broke when we added runtime based SoC revision detection earlier.
 
 It seems suspend worked earlier as things were only partially initialized,
 while now we initialize things properly for dra7.
 
 Note that the "ARM: OMAP: Catch callers of revision information prior
 to it being populated" had to be reverted as it caused bogus warnings
 for other SoCs because omap initcalls bail out based on revision being
 set to 0 for other SoCs. These initcalls will mostly just disappear
 when we drop support for omap3 legacy booting.
 
 Also included is a fix for dra7 sys_32k_ck clock source that is not
 enabled on boot making system fall back to using emulated clock.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXFkmvAAoJEBvUPslcq6VzmakQAKmjDs+iS02No6sQaIkBvadJ
 gAL8EvAPZ5QLt6OW+MvFLiE42kr9NZSbvyLNLzjjqKI9AmuYZnrci8tQJ9uOHMLM
 SmScTjE6b7PvGo2jI+IXkoi1hVL1YP7FKuA0/25EwNaeMKoZ7JPFJ/jpPatvIEg7
 2TB6wk0rdlpGaaSx8uFR2ohDE8lA0gDNRDiHx7G2d9tl9rLLXC2IvS1YhpvLcGw0
 IkRgFGF6+WZ09DZ+B1pnKPrf5wWBGqI44IWBL4epOCsDGxOYFjMix5or7FiaTrcP
 8BGfOVJCRKGjccBvAFJLSznjMQb8jeTHkFxWY8BgY2FSuTJlFrbkxIBraFaZMqG/
 9IOxPvjCJDgJdhGxHuQUGKzbQ2o7D7H5xb5PCxbdscHTcwi2WR6AXI6q+5v2ykqu
 moQXvAPS2GcfVrgXcuIthwvqENExILTwogcgME8/6DvS0l7LlJ7bf1G32jsCvI3M
 mw0+8GKx9qW+7demu6uy0uLiVI5cHfcTWp2ocLnXwnRVmixU5XG4QaPRp/MhB/QV
 F57UxJFHH398zeZ8OgJFzjYwIT+60KCJNU+qMHdBdd76hiJ7Dg0rMxqoxLpbaB4t
 fPbhuE/eUWvZR5IeL1I1M4dDgpp6KThGR86K1wHSMwWkq8Og+XoYMoU3yn0tyqT9
 IHyBWPFAVpKI44uAle7w
 =0X4E
 -----END PGP SIGNATURE-----

Merge tag 'omap-for-v4.6/fixes-rc2-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Merge "omap fixes against v4.6-rc2" from Tony Lindgren

Fixes for omaps against v4.6-rc2, mostly to fix suspend for beagle-x15
that broke when we added runtime based SoC revision detection earlier.

It seems suspend worked earlier as things were only partially initialized,
while now we initialize things properly for dra7.

Note that the "ARM: OMAP: Catch callers of revision information prior
to it being populated" had to be reverted as it caused bogus warnings
for other SoCs because omap initcalls bail out based on revision being
set to 0 for other SoCs. These initcalls will mostly just disappear
when we drop support for omap3 legacy booting.

Also included is a fix for dra7 sys_32k_ck clock source that is not
enabled on boot making system fall back to using emulated clock.

* tag 'omap-for-v4.6/fixes-rc2-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: (198 commits)
  Revert "ARM: OMAP: Catch callers of revision information prior to it being populated"
  ARM: OMAP: Catch callers of revision information prior to it being populated
  ARM: dts: dra7: Correct clock tree for sys_32k_ck
  ARM: OMAP: DRA7: Provide proper class to omap2_set_globals_tap
  ARM: OMAP: DRA7: wakeupgen: Skip SAR save for wakeupgen
  Linux 4.6-rc2
  v4l2-mc: avoid warning about unused variable
  Convert straggling drivers to new six-argument get_user_pages()
  .mailmap: add Christophe Ricard
  Make CONFIG_FHANDLE default y
  mm/page_isolation.c: fix the function comments
  oom, oom_reaper: do not enqueue task if it is on the oom_reaper_list head
  mm/page_isolation: fix tracepoint to mirror check function behavior
  mm/rmap: batched invalidations should use existing api
  x86/mm: TLB_REMOTE_SEND_IPI should count pages
  mm: fix invalid node in alloc_migrate_target()
  include/linux/huge_mm.h: return NULL instead of false for pmd_trans_huge_lock()
  mm, kasan: fix compilation for CONFIG_SLAB
  MAINTAINERS: orangefs mailing list is subscribers-only
  net: mvneta: fix changing MTU when using per-cpu processing
  ...
2016-04-22 09:45:53 -07:00
Evgeny Voevodin d9676fa152 ARCv2: Enable LOCKDEP
- The asm helpers for calling into irq tracer were missing

- Add calls to above helpers in low level assembly entry code for ARCv2

- irq_save() uses CLRI to disable interrupts and returns the prev interrupt
  state (in STATUS32) in a specific encoding (and not the raw value of
  STATUS32). This is usable with SETI in irq_restore(). However
  save_flags() reads the raw value of STATUS32 which doesn't pair with
  irq_save/restore() and thus needs fixing.

Signed-off-by: Evgeny Voevodin <evgeny.voevodin@intel.com>
[vgupta: updated changelog and also added some comments]
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-04-22 18:12:31 +05:30
Jan Beulich 103f6112f2 x86/mm/xen: Suppress hugetlbfs in PV guests
Huge pages are not normally available to PV guests. Not suppressing
hugetlbfs use results in an endless loop of page faults when user mode
code tries to access a hugetlbfs mapped area (since the hypervisor
denies such PTEs to be created, but error indications can't be
propagated out of xen_set_pte_at(), just like for various of its
siblings), and - once killed in an oops like this:

  kernel BUG at .../fs/hugetlbfs/inode.c:428!
  invalid opcode: 0000 [#1] SMP
  ...
  RIP: e030:[<ffffffff811c333b>]  [<ffffffff811c333b>] remove_inode_hugepages+0x25b/0x320
  ...
  Call Trace:
   [<ffffffff811c3415>] hugetlbfs_evict_inode+0x15/0x40
   [<ffffffff81167b3d>] evict+0xbd/0x1b0
   [<ffffffff8116514a>] __dentry_kill+0x19a/0x1f0
   [<ffffffff81165b0e>] dput+0x1fe/0x220
   [<ffffffff81150535>] __fput+0x155/0x200
   [<ffffffff81079fc0>] task_work_run+0x60/0xa0
   [<ffffffff81063510>] do_exit+0x160/0x400
   [<ffffffff810637eb>] do_group_exit+0x3b/0xa0
   [<ffffffff8106e8bd>] get_signal+0x1ed/0x470
   [<ffffffff8100f854>] do_signal+0x14/0x110
   [<ffffffff810030e9>] prepare_exit_to_usermode+0xe9/0xf0
   [<ffffffff814178a5>] retint_user+0x8/0x13

This is CVE-2016-3961 / XSA-174.

Reported-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Juergen Gross <JGross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Cc: stable@vger.kernel.org
Cc: xen-devel <xen-devel@lists.xenproject.org>
Link: http://lkml.kernel.org/r/57188ED802000078000E431C@prv-mh.provo.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-04-22 10:05:00 +02:00
Khalid Aziz c5b8b5beee sparc64: recognize and support Sonoma CPU type
Add code to recognize SPARC-Sonoma cpu correctly and update cpu hardware
caps and cpu distribution map. SPARC-Sonoma is based upon SPARC-M7 core
along with additional PCI functions added on and is reported by firmware
as "SPARC-SN".

Signed-off-by: Khalid Aziz <khalid.aziz@oracle.com>
Acked-by: Allen Pais <allen.pais@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21 16:43:47 -04:00
Adrian Glaubitz 5bde2c9be7 sparc: Implement and wire up vio_hotplug for vio.
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21 16:43:46 -04:00
Adrian Glaubitz 36128d204b sparc: Implement and wire up modalias_show for vio.
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21 16:43:46 -04:00
Sowmini Varadhan 9a78d4fc28 sparc/pci: Refactor dev_archdata initialization into pci_init_dev_archdata
The function pcibios_add_device() added by commit d0c31e0200
("sparc/PCI: Fix for panic while enabling SR-IOV") initializes
the dev_archdata by doing a memcpy from the PF. This has the
problem that it erroneously copies the OF device without
explicitly refcounting it.

As David Miller pointed out: "Generally speaking we don't
really support hot-plug for OF probed devices, but if we did
all of the device tree pointers have to be refcounted properly."

To fix this error, and also avoid code duplication, this patch
creates a new helper function, pci_init_dev_archdata(), that
initializes the fields in dev_archdata, and can be invoked
by callers after they have taken the needed refcounts

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Tested-by: Babu Moger <babu.moger@oracle.com>
Reviewed-by: Khalid Aziz <khalid.aziz@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21 16:43:45 -04:00
Borislav Petkov a95f94bc98 sparc/defconfigs: Remove CONFIG_IPV6_PRIVACY
Option is long gone, see

  5d9efa7ee9 ("ipv6: Remove privacy config option.")

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: sparclinux@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-21 16:43:44 -04:00
Dave Martin 882416c1e4 arm64: Fix EL1/EL2 early init inconsistencies with VHE
When using the Virtualisation Host Extensions, EL1 is not used in
the host and requires no separate configuration.

In addition, with VHE enabled, non-hyp-specific EL2 configuration
that does not need to be done early will be done anyway in
__cpu_setup via the _EL1 system register aliases.  In particular,
the layout and definition of CPTR_EL2 are changed by enabling VHE
so that they resemble CPACR_EL1, so existing code to initialise
CPTR_EL2 becomes architecturally wrong in this case.

This patch simply skips the affected initialisation code in the
non-VHE case.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-04-21 18:34:23 +01:00
Linus Torvalds f862d66a1a Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
 "Three further fixes for ARM.

  Alexandre Courbot was having problems with DMA allocations with the
  GFP flags affecting where the tracking data was being allocated from.
  Vladimir Murzin noticed that the CPU feature code was not entirely
  correct, which can cause some features to be misreported"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8564/1: fix cpu feature extracting helper
  ARM: 8563/1: fix demoting HWCAP_SWP
  ARM: 8551/2: DMA: Fix kzalloc flags in __dma_alloc
2016-04-21 08:45:02 -07:00
Gerald Schaefer 723cacbd9d s390/mm: fix asce_bits handling with dynamic pagetable levels
There is a race with multi-threaded applications between context switch and
pagetable upgrade. In switch_mm() a new user_asce is built from mm->pgd and
mm->context.asce_bits, w/o holding any locks. A concurrent mmap with a
pagetable upgrade on another thread in crst_table_upgrade() could already
have set new asce_bits, but not yet the new mm->pgd. This would result in a
corrupt user_asce in switch_mm(), and eventually in a kernel panic from a
translation exception.

Fix this by storing the complete asce instead of just the asce_bits, which
can then be read atomically from switch_mm(), so that it either sees the
old value or the new value, but no mixture. Both cases are OK. Having the
old value would result in a page fault on access to the higher level memory,
but the fault handler would see the new mm->pgd, if it was a valid access
after the mmap on the other thread has completed. So as worst-case scenario
we would have a page fault loop for the racing thread until the next time
slice.

Also remove dead code and simplify the upgrade/downgrade path, there are no
upgrades from 2 levels, and only downgrades from 3 levels for compat tasks.
There are also no concurrent upgrades, because the mmap_sem is held with
down_write() in do_mmap, so the flush and table checks during upgrade can
be removed.

Reported-by: Michael Munday <munday@ca.ibm.com>
Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-04-21 09:50:09 +02:00
Sebastian Ott dba599091c s390/pci: fix use after free in dma_init
After a failure during registration of the dma_table (because of the
function being in error state) we free its memory but don't reset the
associated pointer to zero.

When we then receive a notification from firmware (about the function
being in error state) we'll try to walk and free the dma_table again.

Fix this by resetting the dma_table pointer. In addition to that make
sure that we free the iommu_bitmap when appropriate.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-04-21 09:50:09 +02:00
Linus Torvalds 55f058e757 Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
 "This fixes the following issues:

   - Incorrect output buffer size calculation in rsa-pkcs1pad

   - Uninitialised padding bytes on exported state in ccp driver

   - Potentially freed pointer used on completion callback in sha1-mb"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: ccp - Prevent information leakage on export
  crypto: sha1-mb - use corrcet pointer while completing jobs
  crypto: rsa-pkcs1pad - fix dst len
2016-04-20 12:00:07 -07:00
Masahiro Yamada 2fee7d5b08 arm64: spin-table: add missing of_node_put()
Since of_get_cpu_node() increments refcount, the node should be put.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-04-20 10:35:15 +01:00
Geert Uytterhoeven c531fb27e9 ARM: shmobile: timer: Fix preset_lpj leading to too short delays
On all shmobile ARM SoCs, loop-based delays may complete early, which
can be after only 1/3 (Cortex A9) or 1/2 (Cortex A7 or A15) of the
minimum required time.

This is caused by calculating preset_lpj based on incorrect assumptions
about the number of clock cycles per loop:
  - All of Cortex A7, A9, and A15 run __loop_delay() at 1 loop per
    CPU clock cycle,
  - As of commit 11d4bb1bd0 ("ARM: 7907/1: lib: delay-loop: Add
    align directive to fix BogoMIPS calculation"), Cortex A8 runs
    __loop_delay() at 1 loop per 2 instead of 3 CPU clock cycles.

On SoCs with Cortex A7 and/or A15 CPU cores, this went unnoticed, as
delays use the ARM arch timer if available. R-Car Gen2 doesn't work if
the arch timer is disabled. However, APE6 can be used without the arch
timer.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-04-20 08:52:55 +10:00
Sjoerd Simons 01638a7f5e Revert "ARM: dts: porter: Enable SCIF_CLK frequency and pins"
This reverts commit 19417bd9c5 ("ARM: dts: porter: Enable SCIF_CLK
frequency and pins") as according to
http://elinux.org/File:R-CarM2-KOELSCH_PORTER-B_PORTER_C_Comparison.pdf
the external oscillator for SCIF_CLK is not mounted on the porter boards.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-04-20 08:52:54 +10:00
Sjoerd Simons ac6908b304 ARM: dts: r8a7791: Don't disable referenced optional clocks
clk_get on a disabled clock node will return EPROBE_DEFER, which can
cause drivers to be deferred forever if such clocks are referenced in
their clocks property.

Update the various disabled external clock nodes to default to a
frequency of 0, but don't disable them to prevent this.

Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
2016-04-20 08:52:53 +10:00
Vladimir Murzin ac36a881b7 ARM: 8564/1: fix cpu feature extracting helper
Commit b8c9592 "ARM: 8318/1: treat CPU feature register fields as signed
quantities" introduced helper to extract signed quantities of 4-bit
blocks. However, with a current code feature with value 0b1000 isn't
rejected as negative. So fix the "if" condition.

Reported-by: Jonathan Brawn <Jon.Brawn@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-04-19 19:42:26 +01:00
Vladimir Murzin 03f1217e5f ARM: 8563/1: fix demoting HWCAP_SWP
Commit b8c9592 "ARM: 8318/1: treat CPU feature register fields as signed
quantities" accidentally altered cpuid register used to demote
HWCAP_SWP.
ARM ARM says that SyncPrim_instrs bits in ID_ISAR3 should be used with
SynchPrim_instrs_frac from ID_ISAR4. So, follow this rule.

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-04-19 19:42:25 +01:00
Tony Lindgren 3d51ae172d Revert "ARM: OMAP: Catch callers of revision information prior to it being populated"
This reverts commit 571afb4c8a.
2016-04-19 08:01:05 -07:00
Linus Torvalds 95d0c4277c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
 "A couple of bug fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: add CPU_BIG_ENDIAN config option
  s390/spinlock: avoid yield to non existent cpu
  s390/dcssblk: fix possible deadlock in remove vs. per-device attributes
  s390/seccomp: include generic seccomp header file
  s390/pci: add extra padding to function measurement block
  s390/scm_blk: fix deadlock for requests != REQ_TYPE_FS
2016-04-18 10:13:31 -07:00
Ard Biesheuvel adb4907007 arm64: fix invalidation of wrong __early_cpu_boot_status cacheline
In head.S, the str_l macro, which takes a source register, a symbol name
and a temp register, is used to store a status value to the variable
__early_cpu_boot_status. Subsequently, the value of the temp register is
reused to invalidate any cachelines covering this variable.

However, since str_l resolves to

      adrp    \tmp, \sym
      str     \src, [\tmp, :lo12:\sym]

the temp register never actually holds the address of the variable but
only of the 4 KB window that covers it, and reusing it leads to the
wrong cacheline being invalidated. So instead, take the address
explicitly before doing the store, and reuse that value to perform
the cache invalidation.

Fixes: bb9052744f ("arm64: Handle early CPU boot failures")
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Suzuki K Poulose <Suzuki.Poulose@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-04-18 16:23:24 +01:00
Anton Blanchard 4705e02498 powerpc: Update TM user feature bits in scan_features()
We need to update the user TM feature bits (PPC_FEATURE2_HTM and
PPC_FEATURE2_HTM) to mirror what we do with the kernel TM feature
bit.

At the moment, if firmware reports TM is not available we turn off
the kernel TM feature bit but leave the userspace ones on. Userspace
thinks it can execute TM instructions and it dies trying.

This (together with a QEMU patch) fixes PR KVM, which doesn't currently
support TM.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: stable@vger.kernel.org
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-04-18 20:10:45 +10:00
Anton Blanchard beff82374b powerpc: Update cpu_user_features2 in scan_features()
scan_features() updates cpu_user_features but not cpu_user_features2.

Amongst other things, cpu_user_features2 contains the user TM feature
bits which we must keep in sync with the kernel TM feature bit.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: stable@vger.kernel.org
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-04-18 20:10:45 +10:00
Anton Blanchard 6997e57d69 powerpc: scan_features() updates incorrect bits for REAL_LE
The REAL_LE feature entry in the ibm_pa_feature struct is missing an MMU
feature value, meaning all the remaining elements initialise the wrong
values.

This means instead of checking for byte 5, bit 0, we check for byte 0,
bit 0, and then we incorrectly set the CPU feature bit as well as MMU
feature bit 1 and CPU user feature bits 0 and 2 (5).

Checking byte 0 bit 0 (IBM numbering), means we're looking at the
"Memory Management Unit (MMU)" feature - ie. does the CPU have an MMU.
In practice that bit is set on all platforms which have the property.

This means we set CPU_FTR_REAL_LE always. In practice that seems not to
matter because all the modern cpus which have this property also
implement REAL_LE, and we've never needed to disable it.

We're also incorrectly setting MMU feature bit 1, which is:

  #define MMU_FTR_TYPE_8xx		0x00000002

Luckily the only place that looks for MMU_FTR_TYPE_8xx is in Book3E
code, which can't run on the same cpus as scan_features(). So this also
doesn't matter in practice.

Finally in the CPU user feature mask, we're setting bits 0 and 2. Bit 2
is not currently used, and bit 0 is:

  #define PPC_FEATURE_PPC_LE		0x00000001

Which says the CPU supports the old style "PPC Little Endian" mode.
Again this should be harmless in practice as no 64-bit CPUs implement
that mode.

Fix the code by adding the missing initialisation of the MMU feature.

Also add a comment marking CPU user feature bit 2 (0x4) as reserved. It
would be unsafe to start using it as old kernels incorrectly set it.

Fixes: 44ae3ab335 ("powerpc: Free up some CPU feature bits by moving out MMU-related features")
Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: stable@vger.kernel.org
[mpe: Flesh out changelog, add comment reserving 0x4]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-04-18 20:08:38 +10:00
Vitaly Kuznetsov 1e2ae9ec07 x86/hyperv: Avoid reporting bogus NMI status for Gen2 instances
Generation2 instances don't support reporting the NMI status on port 0x61,
read from there returns 'ff' and we end up reporting nonsensical PCI
error (as there is no PCI bus in these instances) on all NMIs:

    NMI: PCI system error (SERR) for reason ff on CPU 0.
    Dazed and confused, but trying to continue

Fix the issue by overriding x86_platform.get_nmi_reason. Use 'booted on
EFI' flag to detect Gen2 instances.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Cathy Avery <cavery@redhat.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: devel@linuxdriverproject.org
Link: http://lkml.kernel.org/r/1460728232-31433-1-git-send-email-vkuznets@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-04-16 11:18:21 +02:00
Linus Torvalds 60ea7bb007 Merge branch 'parisc-4.6-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc ftrace fixes from Helge Deller:
 "This is (most likely) the last pull request for v4.6 for the parisc
  architecture.

  It fixes the FTRACE feature for parisc, which is horribly broken since
   quite some time and doesn't even compile.  This patch just fixes the
  bare minimum (it actually removes more lines than it adds), so that
  the function tracer works again on 32- and 64bit kernels.

  I've queued up additional patches on top of this patch which e.g. add
  the syscall tracer, but those have to wait for the merge window for
  v4.7."

* 'parisc-4.6-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix ftrace function tracer
2016-04-15 14:51:45 -07:00
Heiko Carstens 2fd9227364 s390: add CPU_BIG_ENDIAN config option
Make sure that s390 appears to be a big endian machine by defining
this config option.

Without this s390 appears to be little endian as seen by e.g. the
recordmount script: "perl ./scripts/recordmcount.pl "s390" "little"
"64""
This has no practical impact within the script since the endian
variable is only evaluated for mips. However there are already a
couple of common code places which evaluate this config option. None
of them is relevant for s390 currently though.

To avoid any issues in the future (and fix the recordmcount oddity)
add the new config option.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-04-15 18:01:52 +02:00
Heiko Carstens 8497695243 s390/spinlock: avoid yield to non existent cpu
arch_spin_lock_wait_flags() checks if a spinlock is not held before
trying a compare and swap instruction. If the lock is unlocked it
tries the compare and swap instruction, however if a different cpu
grabbed the lock in the meantime the instruction will fail as
expected.

Subsequently the arch_spin_lock_wait_flags() incorrectly tries to
figure out if the cpu that holds the lock is running. However it is
using the wrong cpu number for this (-1) and then will also yield the
current cpu to the wrong cpu.

Fix this by adding a missing continue statement.

Fixes: 470ada6b1a ("s390/spinlock: refactor arch_spin_lock_wait[_flags]")
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-04-15 18:01:48 +02:00
Xiaodong Liu 0851561d9c crypto: sha1-mb - use corrcet pointer while completing jobs
In sha_complete_job, incorrect mcryptd_hash_request_ctx pointer is used
when check and complete other jobs. If the memory of first completed req
is freed, while still completing other jobs in the func, kernel will
crash since NULL pointer is assigned to RIP.

Cc: <stable@vger.kernel.org>
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Acked-by: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2016-04-15 22:13:56 +08:00
Alexandre Courbot 9c18fcf7ae ARM: 8551/2: DMA: Fix kzalloc flags in __dma_alloc
Commit 19e6e5e539 ("ARM: 8547/1: dma-mapping: store buffer
information") allocates a structure meant for internal buffer management
with the GFP flags of the buffer itself. This can trigger the following
safeguard in the slab/slub allocator:

	if (unlikely(flags & GFP_SLAB_BUG_MASK)) {
		pr_emerg("gfp: %un", flags & GFP_SLAB_BUG_MASK);
		BUG();
	}

Fix this by filtering the flags that make the slab allocator unhappy.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-04-15 09:44:02 +01:00
Linus Torvalds 806fdcce01 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "Misc fixes: a binutils fix, an lguest fix, an mcelog fix and a missing
  documentation fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mce: Avoid using object after free in genpool
  lguest, x86/entry/32: Fix handling of guest syscalls using interrupt gates
  x86/build: Build compressed x86 kernels as PIE
  x86/mm/pkeys: Add missing Documentation
2016-04-14 19:53:46 -07:00
Linus Torvalds 4046d6e81f Revert "x86: remove the kernel code/data/bss resources from /proc/iomem"
This reverts commit c4004b02f8.

Sadly, my hope that nobody would actually use the special kernel entries
in /proc/iomem were dashed by kexec.  Which reads /proc/iomem explicitly
to find the kernel base address.  Nasty.

Anyway, that means we can't do the sane and simple thing and just remove
the entries, and we'll instead have to mask them out based on permissions.

Reported-by: Zhengyu Zhang <zhezhang@redhat.com>
Reported-by: Dave Young <dyoung@redhat.com>
Reported-by: Freeman Zhang <freeman.zhang1992@gmail.com>
Reported-by: Emrah Demir <ed@abdsec.com>
Reported-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-14 12:55:32 -07:00
Helge Deller 366dd4ea9d parisc: Fix ftrace function tracer
Fix the FTRACE function tracer for 32- and 64-bit kernel.
The former code was horribly broken.

Reimplement most coding in assembly and utilize optimizations, e.g. put
mcount() and ftrace_stub() into one L1 cacheline.

Signed-off-by: Helge Deller <deller@gmx.de>
2016-04-14 17:47:19 +02:00
Dave Gerlach 1560d15861 ARM: OMAP3: Fix external abort on 36xx waking from off mode idle
Depending on timing during the resume path from off mode on 36xx, we may
see external aborts. These seem to be caused by the following:

- OMAP3 Advisory 1.62 "MPU Cannot Exit from Standby" says we need to
  disable intc autoidle before WFI

- DM3730 Advisory 1.106 "MPU Leaves MSTANDBY State Before IDLEREQ of
  Interrupt Controller is Released" says we need to wait before
  accessing intc

omap3_intc_resume_idle restores the intc autoidle for all resume paths,
however in the resume path from off mode only it is also being restored
by omap_intc_restore_context before this call to omap3_intc_resume_idle
happens. The second restore of the intc autoidle in this path is what
appears to be causing the external abort so for the off mode resume path
let's rely on omap_intc_restore_context to restore intc autoidle, and
for all other paths let omap3_intc_resume_idle handle it as it is now.

Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-04-14 08:27:30 -07:00
Linus Torvalds 90de6800c2 Fixes for two arch/sh build regressions that appeared in 4.6-rc1, one
introduced by me, and one caused by changes elsewhere.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQEcBAABAgAGBQJXDaFFAAoJELcQ+SIFb8HaqYQH/2HE4XRXv7tYULlyTiQENFNc
 m7v8R6D9KLWYlJzrDl5UGfbRDnGHzVFpyzuyJrsEhpymTtoeWif3/96H/VTWKrPq
 h1obfuVH/p8bfodnTnsWqEJa/BdmAvyaeQZ5Ec8ibfYYAOLiUuKDwFI46kZ22m2r
 m13dYoNw0F+rjYjAtlHjX3M2Sq5DvKHLN/STONRtTXxE3FVHOGCQ6SGuasd9JkEr
 rTGRVE2Rkj7Q3BNCOK3eu0+LFkxJFE41nVdk2d/iRRyt9uwXveN8Yk5V/kX/oINk
 1zXfGmtpOiIMs2zH5oNrHwXqWBfEzEXH7XNJOoGVrAzg/6JxMWbQXbDwMyUPjCA=
 =qnfN
 -----END PGP SIGNATURE-----

Merge tag 'sh-fixes-4.6-rc1' of git://git.libc.org/linux-sh

Pull arch/sh fixes from Rich Felker:
 "Fixes for two arch/sh build regressions that appeared in 4.6-rc1, one
  introduced by me, and one caused by changes elsewhere"

* tag 'sh-fixes-4.6-rc1' of git://git.libc.org/linux-sh:
  sh: fix function signature of cpu_coregroup_mask to match pointer type
  sh: fix smp-shx3 build regression from removal of arch localtimer
2016-04-13 13:02:06 -07:00
Roger Quadros a1def45365 ARM: dts: am57xx-beagle-x15: remove extcon_usb1
USB1 controller is hardwired to be used as Host only port so
we don't need to check ID pin state and can get rid of extcon_usb1.

This also reduces USB1 controller's and so eSATA power's dependency
with EXTCON. This fixes eSATA port with multi_v7_defconfig.

Cc: Franklin S Cooper Jr. <fcooper@ti.com>
Cc: Vagrant Cascadian <vagrant@debian.org>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Tested-by: Franklin S Cooper Jr. <fcooper@ti.com>
[tony@atomide.com: updated to describe what it fixes]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-04-13 12:49:35 -07:00
Franklin S Cooper Jr 883cbc901b ARM: dts: am437x: Fix GPMC dma properties
This patch updates the GPMC's DT DMA property to reflect the updated eDMA
bindings.

Fixes: cce1ee0001 ("ARM: DTS: am437x: Use the new DT bindings for the eDMA3")

Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Acked-by: Roger Quadros <rogerq@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-04-13 12:44:53 -07:00
Franklin S Cooper Jr a2abf904a6 ARM: dts: am33xx: Fix GPMC dma properties
This patch updates the GPMC's DT DMA property to reflect the updated eDMA
bindings.

Fixes: b5e5090660 ("ARM: DTS: am33xx: Use the new DT bindings for the eDMA3")

Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Acked-by: Roger Quadros <rogerq@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-04-13 12:44:00 -07:00
Tony Lindgren e2567075be ARM: OMAP2+: clockdomain: another fix for v4.6-rc
For DRA7xx platforms, add a workaround for missed timer interrupts
 that appears to be due to an integration bug (erratum i874)
 
 Basic build, boot, and PM test logs are available here:
 
 http://www.pwsan.com/omap/testlogs/omap-fixes-b-for-v4.6-rc/20160413020850/
 
 (The DRA7xx board here has not yet been added into the testbed.)
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABCAAGBQJXDg3lAAoJEMePsQ0LvSpLHgUP/0jnrjvvhqasjDj5L1u1FWH/
 6N5bYO6CjOfs3qz/Sis96n3cD3f4++RUg62xcMEHmKvLFLi5lets/DMUVvnJ7C/T
 xzlwYpX3h0Z7smHNY1rlXZ8Yzo4tUz/5MIE9/RfYp6KXSNOSQDnbb4AE6bX5iMXC
 I+1rKRR8ohxCBzNpaoflZ/Qj/OFLUOMFQJnmfJKfii/AgK/kNftd1GzOTB9ae5jp
 QuhlB7OnPtDO+TrLtsr/Pxh55ooy/dErRPJcQsfWjM52nNZqGGrXjDnqmgWs70Aj
 M2AHK10AN1tgfeicztOiLyq/9d0GNUartTKnU38D715vV8JcEKjZbZHhn9EQJZyt
 zh+A2lSvAtm3ro/BMoGcSFWFb5l32lWnwZlUi+/yGZJIkICXjMp+jgBdPTcOyQsF
 gL0Ut7ewXy99NJuDP99+yOTEy7G3UcW+F59Pd3VeC6fFDHtg1TeiYqRnfqQlDxdG
 7/Pzc4Huzt9GTePJLBvXjCaI4tomlGb6Y1k59DZsslApFYaDV+NB8IS9+F9ZNC6K
 rwZlRnXyPVE2wXBHb3Hoy3ZEHz471woOkbjQHr6MEZjeDqEenAujqP7mdlImtEkK
 eOm3edsEyguFQhoayKlVWNzsGxfwQo9yPVCurtwE/4yF5mbGXi8f5DXYAfI11Xeb
 OWcXYkE/1X3n87C+C1DQ
 =6XvG
 -----END PGP SIGNATURE-----

Merge tag 'for-v4.6-rc/omap-fixes-b' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v4.6/fixes

ARM: OMAP2+: clockdomain: another fix for v4.6-rc

For DRA7xx platforms, add a workaround for missed timer interrupts
that appears to be due to an integration bug (erratum i874)

Basic build, boot, and PM test logs are available here:

http://www.pwsan.com/omap/testlogs/omap-fixes-b-for-v4.6-rc/20160413020850/

(The DRA7xx board here has not yet been added into the testbed.)
2016-04-13 12:31:47 -07:00
Linus Torvalds 5b523ff281 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu/coldfire fix from Greg Ungerer:
 "Only a single change that removes a local arch specific gpio bus sysfs
  device that now clashes with the generic gpio bus sysfs device
  interface"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k/gpio: remove arch specific sysfs bus device
2016-04-13 08:58:32 -07:00
Linus Torvalds e012766258 ARM: SoC fixes
A batch of fixes for -rc4, for various platforms. Nothing really
 substantial and worth pointing out in particular; small fixes for various
 bugs, see shortlog for details.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXDYm+AAoJEIwa5zzehBx3pP8P/1Xgh0QnJhYk/yxjeZziQcZe
 9jzLKpuIs3aRhM8pcwXuKIwguxp74UkEogK16D0JUzB73ySJmVyaX2Os84RBnBLb
 schb6hpRyjoc+bI9rfHMQQRsyC4NVPdxKq6+YDxl5MZkSbRnGUvEN7EUQPD7kkrb
 wQfkTi8PvF9e2edehwzKwKLUxFb2R9pO/5BiEZoNjFtSe0aQIy2EfTYsfRxSkvpZ
 WZagfRtjMAQfZcV5N1DkyEakNtzkbjwTbGHxbumHJ3hFZ/EaD6c6Vk+HEtDXH0Qj
 50Ful4LRq4ph3/RrsOcfIfBMd8aZbo7fPAiZIDUV7rWenoKBoePLYxO1Y85WLOq8
 a6UAyUzWC7osBxGeoi/nlahsDNJEeH3R+HLKIagKBHdrmw07LibuJlNj9XYPqlbz
 kScZCQ+aY1t1tzOCy823wT7knBkJaORgTFXw8BgNrmPkphzaEHkjwARQxaaIHg8N
 Up0sCB/l/6EZ2YX/iDbyKYt7HDGCzWbWpcfeZfxgO+EvT834iJIpTFu6mHNAvnT1
 HJD94evTDAo6/K8S4z9xVHnPqevfzQzCz+TcGhbhTHLhZ/i6t+BuuazQ/KrEq7hG
 NzVyAJm1xKZybcU6gPk7ZpSKA4NZhTASnfIuEeT/vhn6aSaZAHtMVMCGNfHgn77A
 fegXqmmQP4019pwSz/3B
 =5GPE
 -----END PGP SIGNATURE-----

Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A batch of fixes for -rc4, for various platforms.

  Nothing really substantial and worth pointing out in particular; small
  fixes for various bugs, see shortlog for details"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: sa1100: remove references to the defunct handhelds.org
  bus: uniphier-system-bus: fix condition of overlap check
  ARM: uniphier: drop weird sizeof()
  ARM: dts: am335x-baltos-ir5221: fix cpsw_emac0 link type
  ARM: OMAP: Correct interrupt type for ARM TWD
  ARM: DRA722: Add ID detect for Silicon Rev 2.0
  ARM: dts: am43xx: fix edma memcpy channel allocation
  ARM: dts: AM43x-epos: Fix clk parent for synctimer
  ARM: OMAP2: Fix up interconnect barrier initialization for DRA7
  documentation: Fix pinctrl documentation for Meson8 / Meson8b
  ARM: dts: amlogic: Split pinctrl device for Meson8 / Meson8b
  ARM: mvebu: Correct unit address for linksys
  bus: mvebu-mbus: use %pa to print phys_addr_t
  arm64: dts: vulcan: Update PCI ranges
  ARM: u8500_defconfig: turn on the Synaptics RMI4 driver
  ARM: pxa: fix the number of DMA requestor lines
  ARM: OMAP2+: hwmod: Fix updating of sysconfig register
  ARM: OMAP2+: Use srst_udelay for USB on dm814x
2016-04-13 08:57:18 -07:00
Linus Torvalds 5e1b59abef KVM/ARM fixes:
- Wrong indentation in the PMU code from the merge window
 - A long-time bug occuring with running ntpd on the host, candidate for stable
 - Properly handle (and warn about) the unsupported configuration of running on
    systems with less than 40 bits of PA space
 - More fixes to the PM and hotplug notifier stuff from the merge window
 
 x86:
 - leak of guest xcr0 (typically shows up as SIGILL)
 - new maintainer (who is sending the pull request too)
 - fix for merge window regression
 - fix for guest CPUID
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQEcBAABAgAGBQJXCrBeAAoJEL/70l94x66DHlYIAJseQjhyXMm3J8vkZ1qoPjiM
 IWUV3BoSDpMjIXZdiouDShCBwBE1zDoFCXzkGO8FGNpYTy/4WQ2DF+fQr8OFveOv
 bpLJI6iYpCESh5ihhp8UDTD9oY4ZAxyPfNUx06Rirze2ijDr6rWkM16bKgdIlMpa
 rzGUQWodZO0odCWVMAXSe08uistvqZ71iacpAIJQJrx3MJcq1u2+Y2daZO3df1R6
 GnWxY5SK2ZvrNEwjQPXAYgCPGaJKEVUbr9BvWFoQ2O+qGA4TPv4jrOsAQ7bRh4Rr
 SGOH465Qdj2EA7eJrP2/NAlD5N7H7RWkiLiyIGF4OTS6wJHU8jdnOLbYPx0VmQg=
 =1OKc
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Radim Krčmář:
 "ARM fixes:
   - Wrong indentation in the PMU code from the merge window
   - A long-time bug occuring with running ntpd on the host, candidate
     for stable
   - Properly handle (and warn about) the unsupported configuration of
     running on systems with less than 40 bits of PA space
   - More fixes to the PM and hotplug notifier stuff from the merge
     window

  x86:
   - leak of guest xcr0 (typically shows up as SIGILL)
   - new maintainer (who is sending the pull request too)
   - fix for merge window regression
   - fix for guest CPUID"

Paolo Bonzini points out:
 "For the record, this tag is signed by me because I prepared the pull
  request.  Further pull requests for 4.6 will be signed and sent out by
  Radim directly"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: mask CPUID(0xD,0x1).EAX against host value
  kvm: x86: do not leak guest xcr0 into host interrupt handlers
  KVM: MMU: fix permission_fault()
  KVM: new maintainer on the block
  arm64: KVM: unregister notifiers in hyp mode teardown path
  arm64: KVM: Warn when PARange is less than 40 bits
  KVM: arm/arm64: Handle forward time correction gracefully
  arm64: KVM: Add braces to multi-line if statement in virtual PMU code
2016-04-13 08:53:26 -07:00
Tony Luck a3125494cf x86/mce: Avoid using object after free in genpool
When we loop over all queued machine check error records to pass them
to the registered notifiers we use llist_for_each_entry(). But the loop
calls gen_pool_free() for the entry in the body of the loop - and then
the iterator looks at node->next after the free.

Use llist_for_each_entry_safe() instead.

Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Cc: Gong Chen <gong.chen@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/0205920@agluck-desk.sc.intel.com
Link: http://lkml.kernel.org/r/1459929916-12852-4-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-04-13 10:54:00 +02:00
Alexander Kurz fc26fe9c38 ARM: mach-imx: sdhci-esdhc-imx: initialize DMA mask
With commit 7b91369b46 ("mmc: sdhci: Set DMA mask when adding host")
DMA access got disabled for device drivers with zero DMA mask property.
sdhci-esdhc-imx got blocked from DMA access by this.  Hence: initialize
the DMA mask to enable access again.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2016-04-13 16:41:56 +08:00
Olof Johansson 0b24f7a8d6 mvebu fixes for 4.6 (part 1)
- fix USB adress register for Linksys Armada 388 based boards
 - fix build warning in mvebu-mbus
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iEYEABECAAYFAlcGmgAACgkQCwYYjhRyO9WmLACgkLHkRxw3Xmp5/g3tSgBzh06A
 Qb4An2adegesOnsQzbVwWeaCaJxdEbk/
 =sMxU
 -----END PGP SIGNATURE-----

Merge tag 'mvebu-fixes-4.6-1' of git://git.infradead.org/linux-mvebu into fixes

mvebu fixes for 4.6 (part 1)

- fix USB adress register for Linksys Armada 388 based boards
- fix build warning in mvebu-mbus

* tag 'mvebu-fixes-4.6-1' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: Correct unit address for linksys
  bus: mvebu-mbus: use %pa to print phys_addr_t

Signed-off-by: Olof Johansson <olof@lixom.net>
2016-04-12 12:35:07 -07:00
Linus Walleij 452a31fd36 ARM: sa1100: remove references to the defunct handhelds.org
The website handhelds.org has been down for a long time and is
likely never coming back online.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2016-04-12 12:34:15 -07:00
Olof Johansson 13ab2c80e2 ARM: pxa: fixes for v4.6
There is only a single fix for dma requestor lines initial
 setup, triggered by dmaengine previous fix.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJW/7VMAAoJEAP2et0duMsSEE4P/jFIhi272IQCuIHWbreIyfLE
 aV2FJzcRzwb1gp5LLkUInunrYf2cUMf49fmE0x0v+mDwU6KzwNQB6B8zoufclsmY
 qGlIR0EbY4aAfWsM+/ujCSlsYQMw+mANE/Xiu3ed/cc0mtPRUe2ZoPV7i0A5itx5
 8HImL5My+pWpurz6qeXTXx5hsdfXWxRU3LA35/3pZVUi2BqoDcIcGqTsYOTliEl4
 0Q6lCDPiszOa7ePfk0Fsg4/xpVXUw+evc6xy9R/PEnOipWM8S6SB4gPnw/A/R+f1
 VfRiLEkAcrD/NkMLM3KYUlkrMUAI+WBDDVEVe/QGp4xegurtJ3UhHSWPB6DR+WbX
 e6/mMp9MyyG0IHgbCCESTMNSuz8TZ/mTSxEw3tJ/eT8ZXU34SDErAKMUJ+Kbx6qT
 7odB+G6vmeLWFcZvZBrmIX3mG8q8nxckbVyhTsVt+v4Xdcz9M7waEwHHFeBTNYpy
 JKboBxBUQLFr84Z/VlxIPO6Oxdnwt94prhko8/9g6yJn84VNILEiIy2matj5tk15
 qTx1OHmYA9YfwysnKytRgqPHatZkk6GmphXhEjgGmCl43Ux7YFBL25Mm1uNuYWfo
 Ci+8stpVHn4efBjhbgdvnFz+hgbwSSLeY2DUKYFsEREwmiunSmkPnrk6mYCiTQPZ
 GTmCuXY8RYctTHioWWhu
 =NaUe
 -----END PGP SIGNATURE-----

Merge tag 'pxa-fixes-v4.6' of https://github.com/rjarzmik/linux into fixes

ARM: pxa: fixes for v4.6

There is only a single fix for dma requestor lines initial
setup, triggered by dmaengine previous fix.

* tag 'pxa-fixes-v4.6' of https://github.com/rjarzmik/linux:
  ARM: pxa: fix the number of DMA requestor lines

Signed-off-by: Olof Johansson <olof@lixom.net>
2016-04-12 12:33:41 -07:00
Olof Johansson 2e1d18c699 Fixes for omaps against v4.6-rc1. Mostly minor fixes for the newer
SoCs with few board fixes and a fix for a long time hwmod bug:
 
 - Fix cpsw_emac0 link type for baltos-ir5221
 
 - Fix interrupt type for TWD
 
 - Fix edma memcpy channel allocation for am43x
 
 - Fix am43x-epos sycntimer32k by using the correct assigned clock
 
 - Fix interconnect barrier for dra7
 
 - Fix a long time hwmod bug for updating sysconfig register properly
 
 - Fix flakey booting on dm814x where USB reset needs a delay
 
 And there is one minor change that is not strictly a fix, but is
 good to have for proper hardware detection:
 
 - Detect dra7 silicon revision 2.0 properly
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJW/pp4AAoJEBvUPslcq6VzqQgP/RjKTIdwRnpjUryPwxwMwQ52
 gt9GjqMKvS3IvRyFewsjgTtoB/7l14qz3cVzurYeov+PekbqxnIJG1tVzltGVHQX
 WO13hzSV+Nuaf/4yFCCOcWSVtC4+26DvUCljfcUuxKiAsoXHrAIJJClHTtzqkXWK
 oJ5vipMKe166s7ULB9yKLoqU0wWBSsTqPK2IVjqdyF+eBcyy0BitJBembzWS6c8C
 FqhX3QOkU8PnzmUcJlVzqchA8ES7Cp2cgGnRcdFUV7A8gdBQrDDfAdJwb+CXhSYN
 3Csd++gcU/J3N8Rsbdv1mOVaHjQ+SVk22iWGT9z6FDBzg+S3thknCpDpP9qipV+i
 vV1LsCydKRVvXJO3SN5Pykhdwmod5zw/FSPe+0xyVsk3zxe8jzF3TKWkIeS43POA
 6e6DdhFfxI6u5BQydohOoMwDd/SzRQxA6IxZxpresDWeoE3Ffu4/ZyIhcUsZfcSK
 0kVEc+ayQQnLfN5P1jQ5gWvxWXvQ/p7DBfnDL+kfyShjFHJo5ZO51IVr1rNfdIQc
 fvtklMI82E4lf3qsRtHxrfPUuigWJcslfoQEJ7B3NVyXP7VXmB2iuKRUEI8QuvU4
 AxXwp5qmKVvnUoXNIsX9PGL9FLTokAFJ8YWPvjFOIIHP0JphZ/AEMhgVwbW7Ze6/
 VGjsmATRQqXSYqavc4No
 =5fhs
 -----END PGP SIGNATURE-----

Merge tag 'omap-for-v4.6/fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Fixes for omaps against v4.6-rc1. Mostly minor fixes for the newer
SoCs with few board fixes and a fix for a long time hwmod bug:

- Fix cpsw_emac0 link type for baltos-ir5221
- Fix interrupt type for TWD
- Fix edma memcpy channel allocation for am43x
- Fix am43x-epos sycntimer32k by using the correct assigned clock
- Fix interconnect barrier for dra7
- Fix a long time hwmod bug for updating sysconfig register properly
- Fix flakey booting on dm814x where USB reset needs a delay

And there is one minor change that is not strictly a fix, but is
good to have for proper hardware detection:

- Detect dra7 silicon revision 2.0 properly

* tag 'omap-for-v4.6/fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: am335x-baltos-ir5221: fix cpsw_emac0 link type
  ARM: OMAP: Correct interrupt type for ARM TWD
  ARM: DRA722: Add ID detect for Silicon Rev 2.0
  ARM: dts: am43xx: fix edma memcpy channel allocation
  ARM: dts: AM43x-epos: Fix clk parent for synctimer
  ARM: OMAP2: Fix up interconnect barrier initialization for DRA7
  ARM: OMAP2+: hwmod: Fix updating of sysconfig register
  ARM: OMAP2+: Use srst_udelay for USB on dm814x

Signed-off-by: Olof Johansson <olof@lixom.net>
2016-04-12 12:32:35 -07:00
Masahiro Yamada 3137b71656 ARM: uniphier: drop weird sizeof()
My intention was to ioremap a 4-byte register.  Coincidentally enough,
sizeof(SZ_4) equals to SZ_4, but this code is weird anyway.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
2016-04-12 12:06:27 -07:00
Linus Torvalds 6c6563a489 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k update from Geert Uytterhoeven.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/defconfig: Update defconfigs for v4.6-rc2
  m68k: Wire up preadv2 and pwritev2
2016-04-11 12:24:59 -07:00
Linus Torvalds a56711fa0b ARC fixes for 4.6-rc4
- Kconfig splat due to pcie rework
  - Making ethernet work again on axs103
  - Provide fb_pgprotect() for future Video driver integration
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJXC1vSAAoJEGnX8d3iisJeRzYP/3XJ8z04XAkQU4k4Ny0UQbHb
 y2sqRHmXUQH2YfEI6qXuDevbk72q9ROu4m49if8/IDhrE3QjCkCOw6M9z2k1mU9B
 e4RWj6pZOYvjfhI/DHAJGqjpDudkX5KGRFx84NEaI4qwFfESwVsdv4oNDkCpP76a
 FbE4cT1yzbUYv9F5BVvZVOL4nJqih3y6n7YBgHf6GpeE2pKNqxPh+leoOq3n4e0w
 Br1rYZnTWbBvEwrfVHi8KOFgo2qrRu7VWbmmcImn+eZFAKhKjbXaExK2ShpAVgdI
 gebt+t8JDhThdN0/DwPuwMlAu7+9EoGk3XTCLWNfTxoaAINWF8JNEDUo9P9PpILd
 uDozzrZKV7NEHPBLiezqNlNs/jH5cMfatX+K4mX42uAH0RSl0iB4R0ODOnnuG8Po
 qqALXoDCNBdALa+yUd8s7VOQp+UoZW4SDcNIBGyhLbrpbYPUKbv80rDTa6fXRlMP
 Dw402DKs0sDc2zgcEVaxxt8KzeIqymATiWs7qUKJo2fNVBjw5XTlb5zl1hHkmCz5
 o1D3YJIQAX/QuqsHGvIj9uVlo8Z+kU7rFuKcv+YwwIJz7fZOaLDkwAHO+A05yHyF
 EP4WE+FOiDwXBGW9Uy/zgQO7AEtAmJtZxAeYwULDNVE6Mz0bQuz6NV0I9vqVWtxF
 VPatTRs8prsGdXc4k7e9
 =O4Nt
 -----END PGP SIGNATURE-----

Merge tag 'arc-4.6-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:
 - fix Kconfig splat due to pcie rework
 - make ethernet work again on axs103
 - provide fb_pgprotect() for future video driver integration

* tag 'arc-4.6-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: [plat-axs103] Enable loop block devices
  Revert "ARC: [plat-axs10x] add Ethernet PHY description in .dts"
  arc: Add our own implementation of fb_pgprotect()
  ARC: Don't source drivers/pci/pcie/Kconfig ourselves
2016-04-11 12:19:57 -07:00
Greg Ungerer 2763ee6448 m68k/gpio: remove arch specific sysfs bus device
The ColdFire architecture specific gpio support code registers a sysfs
bus device named "gpio". This clashes with the new generic API device
added in commit 3c702e99 ("gpio: add a userspace chardev ABI for GPIOs").

The old ColdFire sysfs gpio device was never used for anything specific,
and no links or other nodes were created under it. The new API sysfs gpio
device has all the same default sysfs links (device, drivers, etc) and
they are properly populated.

Remove the old ColdFire sysfs gpio registration.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
2016-04-11 12:03:18 +10:00
Linus Torvalds 08b15d1386 Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
 "A couple of small fixes, and wiring up the new syscalls which appeared
  during the merge window"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8550/1: protect idiv patching against undefined gcc behavior
  ARM: wire up preadv2 and pwritev2 syscalls
  ARM: SMP enable of cache maintanence broadcast
2016-04-10 17:48:17 -07:00
Paolo Bonzini 316314cae1 KVM: x86: mask CPUID(0xD,0x1).EAX against host value
This ensures that the guest doesn't see XSAVE extensions
(e.g. xgetbv1 or xsavec) that the host lacks.

Cc: stable@vger.kernel.org
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-04-10 21:53:50 +02:00
David Matlack fc5b7f3bf1 kvm: x86: do not leak guest xcr0 into host interrupt handlers
An interrupt handler that uses the fpu can kill a KVM VM, if it runs
under the following conditions:
 - the guest's xcr0 register is loaded on the cpu
 - the guest's fpu context is not loaded
 - the host is using eagerfpu

Note that the guest's xcr0 register and fpu context are not loaded as
part of the atomic world switch into "guest mode". They are loaded by
KVM while the cpu is still in "host mode".

Usage of the fpu in interrupt context is gated by irq_fpu_usable(). The
interrupt handler will look something like this:

if (irq_fpu_usable()) {
        kernel_fpu_begin();

        [... code that uses the fpu ...]

        kernel_fpu_end();
}

As long as the guest's fpu is not loaded and the host is using eager
fpu, irq_fpu_usable() returns true (interrupted_kernel_fpu_idle()
returns true). The interrupt handler proceeds to use the fpu with
the guest's xcr0 live.

kernel_fpu_begin() saves the current fpu context. If this uses
XSAVE[OPT], it may leave the xsave area in an undesirable state.
According to the SDM, during XSAVE bit i of XSTATE_BV is not modified
if bit i is 0 in xcr0. So it's possible that XSTATE_BV[i] == 1 and
xcr0[i] == 0 following an XSAVE.

kernel_fpu_end() restores the fpu context. Now if any bit i in
XSTATE_BV == 1 while xcr0[i] == 0, XRSTOR generates a #GP. The
fault is trapped and SIGSEGV is delivered to the current process.

Only pre-4.2 kernels appear to be vulnerable to this sequence of
events. Commit 653f52c ("kvm,x86: load guest FPU context more eagerly")
from 4.2 forces the guest's fpu to always be loaded on eagerfpu hosts.

This patch fixes the bug by keeping the host's xcr0 loaded outside
of the interrupts-disabled region where KVM switches into guest mode.

Cc: stable@vger.kernel.org
Suggested-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: David Matlack <dmatlack@google.com>
[Move load after goto cancel_injection. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-04-10 21:53:49 +02:00
Xiao Guangrong 7a98205dee KVM: MMU: fix permission_fault()
kvm-unit-tests complained about the PFEC is not set properly, e.g,:
test pte.rw pte.d pte.nx pde.p pde.rw pde.pse user fetch: FAIL: error code 15
expected 5
Dump mapping: address: 0x123400000000
------L4: 3e95007
------L3: 3e96007
------L2: 2000083

It's caused by the reason that PFEC returned to guest is copied from the
PFEC triggered by shadow page table

This patch fixes it and makes the logic of updating errcode more clean

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
[Do not assume pfec.p=1. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-04-10 21:53:49 +02:00
Keerthy 1cbabcb980 ARM: DRA7: clockdomain: Implement timer workaround for errata i874
Errata Title:
i874: TIMER5/6/7/8 interrupts not propagated

Description:
When TIMER5, TIMER6, TIMER7, or TIMER8 clocks are enabled
(CM_IPU_TIMER5/6/7/8_CLKCTRL[0:1]MODULEMODE=0x2:ENABLE) and the CD-IPU
is in HW_AUTO mode (CM_IPU_CLKSTCTRL[0:1]CLKTRCTRL=0x3:HW_AUTO) the
corresponding TIMER will continue counting, but enabled interrupts
will not be propagated to the destinations (MPU, DSP, etc) in the
SoC until the TIMER registers are accessed from the CPUs (MPU, DSP
etc.). This can result in missed timer interrupts.

Workaround:
In order for TIMER5/6/7/8 interrupts to be propagated and serviced
correctly the CD_IPU domain should be set to SW_WKUP mode
(CM_IPU_CLKSTCTRL[0:1]CLKTRCTRL=0x2:SW_WKUP).

The above workaround is achieved by switching the IPU clockdomain
flags from HWSUP_SWSUP to SWSUP only.

Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2016-04-10 11:43:57 -06:00
Linus Torvalds 5b5b7fd185 Merge branch 'parisc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
 "Since commit 0de798584b ("parisc: Use generic extable search and
  sort routines") module loading is boken on parisc, because the parisc
  module loader wasn't prepared for the new R_PARISC_PCREL32 relocations.

  In addition, due to that breakage, Mikulas Patocka noticed that
  handling exceptions from modules probably never worked on parisc.  It
  was just masked by the fact that exceptions from modules don't happen
  during normal use.

  This patch series fixes those issues and survives the tests of the
  lib/test_user_copy kernel module test.  Some patches are tagged for
  stable"

* 'parisc-4.6-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Update comment regarding relative extable support
  parisc: Unbreak handling exceptions from kernel modules
  parisc: Fix kernel crash with reversed copy_from_user()
  parisc: Avoid function pointers for kernel exception routines
  parisc: Handle R_PARISC_PCREL32 relocations in kernel modules
2016-04-09 14:10:20 -07:00
Linus Torvalds 40bca9dbab Power management and ACPI material for v4.6-rc3
- intel_pstate fixes for two issues exposed by the recent switch
    over from using timers and for one issue introduced during the
    4.4 cycle plus new comments describing data structures used by
    the driver (Rafael Wysocki, Srinivas Pandruvada).
 
  - intel_idle fixes related to CPU offline/online (Richard Cochran).
 
  - intel_idle support (new CPU IDs and state definitions mostly) for
    Skylake-X and Kabylake processors (Len Brown).
 
  - PCC mailbox driver fix for an out-of-bounds memory access that
    may cause the kernel to panic() (Shanker Donthineni).
 
  - New (missing) CPU ID for one apparently overlooked Haswell model
    in the Intel RAPL power capping driver (Srinivas Pandruvada).
 
  - Fix for the PM core's wakeup IRQs framework to make it work after
    wakeup settings reconfiguration from sysfs (Grygorii Strashko).
 
  - Runtime PM documentation update to make it describe what needs
    to be done during device removal more precisely (Krzysztof
    Kozlowski).
 
  - Stale comment removal cleanup in the cpufreq-dt driver (Viresh
    Kumar).
 
  - turbostat utility fixes and support for Broxton, Skylake-X
    and Kabylake processors (Len Brown).
 
 /
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQIcBAABCAAGBQJXCBaNAAoJEILEb/54YlRxDrkP/jdCfB3wOcRGp6LN6GHksC3u
 k2yUQl+XJZhggLda+yUK2ovV5tCJwGmP1N1B/MacRr/5MeicGXBvt6ZrHGqOfTKo
 9xAGKOt2xsoAbHkleB733GIRD9TYZpqCTx9n0dka7kRArQA/uhY+TlXYY2Kn+E0B
 1c4lEN3d9j4G2qW55YxnfRUOhwUc03syokOsS2z9ChEAVPSrn7Zv8V+8rPwxIz5w
 uUWphlnEQgaRwzwxACHwE0bht8sl1cJ1UUSVbzf30mzRlGHiteYyI/vuE2hF9SiV
 DEv9mhSB+4U6WuBHr4Cwu+nf9YTlaY1ZaS3r5EDzJaNJb8tMqPZcGitfn+fTGtUz
 9GlCQZIBcP1vWBDybuuPOzAH++QUFrikozuNfUu1d+WFEypRyadMIvUhtmZPG9mh
 9+Vem+ta32eXos07dx4Dvth+yNvmG5bxPnteDp3GPsnCCDlXutcKaaJaaj+1NzHi
 oqHyEynMhJuN/D2h+oIVIUppKBVO55M+lJMJrX891zICs/98K2LwOtFDuNRWQml0
 3yR7Ieoj5gxVfbT6zNeH5z7CxP/MymNAMjbxfiwqtGHhkNoAv92ymMxnptPiLCHn
 Zyycelsve3sneV+iyk1fAOZFvDXbzTUyigxGP7Kc87iia/Yd2TjLlvwJkMNK6x/K
 2OSkjJFqqrqAqcXNIz3G
 =f4MM
 -----END PGP SIGNATURE-----

Merge tag 'pm+acpi-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fixes from Rafael Wysocki:
 "Fixes for some issues discovered after recent changes and for some
  that have just been found lately regardless of those changes
  (intel_pstate, intel_idle, PM core, mailbox/pcc, turbostat) plus
  support for some new CPU models (intel_idle, Intel RAPL driver,
  turbostat) and documentation updates (intel_pstate, PM core).

  Specifics:

   - intel_pstate fixes for two issues exposed by the recent switch over
     from using timers and for one issue introduced during the 4.4 cycle
     plus new comments describing data structures used by the driver
     (Rafael Wysocki, Srinivas Pandruvada).

   - intel_idle fixes related to CPU offline/online (Richard Cochran).

   - intel_idle support (new CPU IDs and state definitions mostly) for
     Skylake-X and Kabylake processors (Len Brown).

   - PCC mailbox driver fix for an out-of-bounds memory access that may
     cause the kernel to panic() (Shanker Donthineni).

   - New (missing) CPU ID for one apparently overlooked Haswell model in
     the Intel RAPL power capping driver (Srinivas Pandruvada).

   - Fix for the PM core's wakeup IRQs framework to make it work after
     wakeup settings reconfiguration from sysfs (Grygorii Strashko).

   - Runtime PM documentation update to make it describe what needs to
     be done during device removal more precisely (Krzysztof Kozlowski).

   - Stale comment removal cleanup in the cpufreq-dt driver (Viresh
     Kumar).

   - turbostat utility fixes and support for Broxton, Skylake-X and
     Kabylake processors (Len Brown)"

* tag 'pm+acpi-4.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (28 commits)
  PM / wakeirq: fix wakeirq setting after wakup re-configuration from sysfs
  tools/power turbostat: work around RC6 counter wrap
  tools/power turbostat: initial KBL support
  tools/power turbostat: initial SKX support
  tools/power turbostat: decode BXT TSC frequency via CPUID
  tools/power turbostat: initial BXT support
  tools/power turbostat: print IRTL MSRs
  tools/power turbostat: SGX state should print only if --debug
  intel_idle: Add KBL support
  intel_idle: Add SKX support
  intel_idle: Clean up all registered devices on exit.
  intel_idle: Propagate hot plug errors.
  intel_idle: Don't overreact to a cpuidle registration failure.
  intel_idle: Setup the timer broadcast only on successful driver load.
  intel_idle: Avoid a double free of the per-CPU data.
  intel_idle: Fix dangling registration on error path.
  intel_idle: Fix deallocation order on the driver exit path.
  intel_idle: Remove redundant initialization calls.
  intel_idle: Fix a helper function's return value.
  intel_idle: remove useless return from void function.
  ...
2016-04-09 11:03:48 -07:00
Kevin Hilman 309fdeb557 With http://www.spinics.net/lists/devicetree/msg116771.html we split / refactor
the pinctrl driver to have two different pinctrl devices for each bus on the
 Amlogic Meson8 / Meson8b SoCs.
 These are the missing patches for documentation and DT that weren't pulled into
 mainline with the driver changes.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJW/CNQAAoJELyGR0S84or41vAQAK8XlPjtq7lz3g0MUpzJiqu2
 0gVrHRTpv0Go4AnotKr3DwgCfHcFKFo5/0Dng4Sf87nb96nd3ntwVwD0ZDEfkfHN
 EK8vGhA10dmZrwplE2Lt44o48qAcEizbpGxvRoLLUcjO7TRZupR705FwdQTloO9T
 aHfs5svIdWyGtyXHz3MJPaONW22ie3GidsV7eSTA8h2ne11ymO7lISfyUB77FGc5
 +Rsz4bvRQohQdQ69Wtw4Yw1+wRtBApm+Fen+klgHLqKh8YtiLTTsKF77xbiPn7+c
 9aSiuWAKwGHJH8tJpI3ShxmOV1Zqb8QrLaaTkKgq2YdZ9FiLh61PWy5yqbnEWBR9
 9fCSQoatTr1zztGYJ9Kb/olLvPNKJ5Yfedz6tQXX5pXVwQ3ClPaYyf/ljcmzYcH1
 Y7ONB2+LDFdMv8WtfcjdpwTBVg7xpW8s40ElJL0/hF9PnkzAy1fo78cxPhjIENp2
 t2xK2ILmE9+ieedriACpyOPMWlsXptsAgnfWThFxOPsxfjIPdbSgTR9cUbpIjtfE
 Om5AnH53A/dHTKI8rUUHcJC8IOBo03LXyiUKyu/JfN0f5BbbmtvbO1OCoErHhsIO
 c7Zo2O6UOdShdf/J8LP/xlx/YA3K2WEbbR1EwTrTgMHGwEUj/QkVArxAiD16PTAu
 nbVbGGaKfAGnBzUSkKXc
 =6xQq
 -----END PGP SIGNATURE-----

Merge tag 'meson8-dt-fix' of https://github.com/carlocaione/linux-meson into fixes

With http://www.spinics.net/lists/devicetree/msg116771.html we split / refactor
the pinctrl driver to have two different pinctrl devices for each bus on the
Amlogic Meson8 / Meson8b SoCs.
These are the missing patches for documentation and DT that weren't pulled into
mainline with the driver changes.

* tag 'meson8-dt-fix' of https://github.com/carlocaione/linux-meson:
  documentation: Fix pinctrl documentation for Meson8 / Meson8b
  ARM: dts: amlogic: Split pinctrl device for Meson8 / Meson8b
2016-04-08 16:03:46 -07:00
Helge Deller cb910c1714 parisc: Update comment regarding relative extable support
Update the comment to reflect the changes of commit 0de7985 (parisc: Use
generic extable search and sort routines).

Signed-off-by: Helge Deller <deller@gmx.de>
2016-04-08 22:14:26 +02:00
Helge Deller 2ef4dfd9d9 parisc: Unbreak handling exceptions from kernel modules
Handling exceptions from modules never worked on parisc.
It was just masked by the fact that exceptions from modules
don't happen during normal use.

When a module triggers an exception in get_user() we need to load the
main kernel dp value before accessing the exception_data structure, and
afterwards restore the original dp value of the module on exit.

Noticed-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org
2016-04-08 22:14:14 +02:00
Helge Deller ef72f3110d parisc: Fix kernel crash with reversed copy_from_user()
The kernel module testcase (lib/test_user_copy.c) exhibited a kernel
crash on parisc if the parameters for copy_from_user were reversed
("illegal reversed copy_to_user" testcase).

Fix this potential crash by checking the fault handler if the faulting
address is in the exception table.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org
Cc: Kees Cook <keescook@chromium.org>
2016-04-08 22:14:04 +02:00
Helge Deller e3893027a3 parisc: Avoid function pointers for kernel exception routines
We want to avoid the kernel module loader to create function pointers
for the kernel fixup routines of get_user() and put_user(). Changing
the external reference from function type to int type fixes this.

This unbreaks exception handling for get_user() and put_user() when
called from a kernel module.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org
2016-04-08 22:13:45 +02:00
Helge Deller 592570c950 parisc: Handle R_PARISC_PCREL32 relocations in kernel modules
Commit 0de7985 (parisc: Use generic extable search and sort routines)
changed the exception tables to use 32bit relative offsets.

This patch now adds support to the kernel module loader to handle such
R_PARISC_PCREL32 relocations for 32- and 64-bit modules.

Signed-off-by: Helge Deller <deller@gmx.de>
2016-04-08 22:10:35 +02:00
Rafael J. Wysocki 73659be769 Merge branches 'pm-core', 'powercap' and 'pm-tools'
* pm-core:
  PM / wakeirq: fix wakeirq setting after wakup re-configuration from sysfs
  PM / runtime: Document steps for device removal

* powercap:
  powercap: intel_rapl: Add missing Haswell model

* pm-tools:
  tools/power turbostat: work around RC6 counter wrap
  tools/power turbostat: initial KBL support
  tools/power turbostat: initial SKX support
  tools/power turbostat: decode BXT TSC frequency via CPUID
  tools/power turbostat: initial BXT support
  tools/power turbostat: print IRTL MSRs
  tools/power turbostat: SGX state should print only if --debug
2016-04-08 21:46:56 +02:00
Tony Lindgren 19e831b272 Merge branch 'fixes-rc2' into omap-for-v4.6/fixes 2016-04-08 09:18:00 -07:00
Nishanth Menon 571afb4c8a ARM: OMAP: Catch callers of revision information prior to it being populated
omap_rev is used to detect various SoC types, however any misuse of
the usage by invoking it earlier than it being populated will result
in invalid results. Lets flag them as early as possible to prevent
unintended side effects taking place. We get 0 if it is uninitialized
and -1 when detection is done using device tree (as the case was for
DRA7 as the case was prior to commit 06c2d368fc ("ARM: OMAP: DRA7:
Make use of omap_revision information for soc_is* calls")

Signed-off-by: Nishanth Menon <nm@ti.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-04-08 09:02:39 -07:00
Keerthy eea08802f5 ARM: dts: dra7: Correct clock tree for sys_32k_ck
This is w.r.t J6/J6eco: 32clk is pseudo (erratum i856) - clock source.
Errata i856 for the AM572x (DRA7xx) points out that the 32.768KHz external
crystal is not enabled at power up. Instead the CPU falls back to using
an emulation for the 32KHz clock which is SYSCLK1/610.  SYSCLK1 is usually
20MHz on boards so far (which gives an emulated frequency of 32.786KHz)

Modelling the same in device tree.

Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-04-08 09:02:39 -07:00
Nishanth Menon ec490f6f60 ARM: OMAP: DRA7: Provide proper class to omap2_set_globals_tap
When commit 06c2d368fc ("ARM: OMAP: DRA7: Make use of omap_revision
information for soc_is* calls") introduced SoC check using
omap_revision, it missed providing DRA7 as class for initializing
the omap_version variable. Without doing this, soc_is_dra7xx() will
fail and as a result, omap4_pm_init_early never initializes the dra7
erratum for CPU power state. This causes the suspend path to fail
on DRA7 devices.

Fixes: 06c2d368fc ("ARM: OMAP: DRA7: Make use of omap_revision information for soc_is* calls")
Signed-off-by: Nishanth Menon <nm@ti.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-04-08 08:54:44 -07:00
Nishanth Menon c783e6fd7f ARM: OMAP: DRA7: wakeupgen: Skip SAR save for wakeupgen
DRA7 has no SAR region for automated save and restore of wakeupgen,
which does not make real since the SoC really does not do legacy OFF
mode anymore. Further wakeupgen should never loose context in CSWR
retention mode for MPU domain on DRA7 since that is the deepest state
we will enter.

So, just skip, instead of oopsing as follows while attemptint to enter
suspend on BeagleBoard-X15.
[   55.589771] Unable to handle kernel paging request at virtual address 00002684
[   55.589771] pgd = ec69c000
[...]
[   55.589771] [<c0123cc8>] (irq_notifier) from [<c015ad70>] (notifier_call_chain+0x4c/0x8c)
[   55.589771] [<c015ad70>] (notifier_call_chain) from [<c021469c>] (cpu_cluster_pm_enter+0x2c/0x78)
[   55.589771] [<c021469c>] (cpu_cluster_pm_enter) from [<c0514508>] (syscore_suspend+0xb8/0x31c)
[   55.589771] [<c0514508>] (syscore_suspend) from [<c0197d24>] (suspend_devices_and_enter+0x308/0x9e4)
[   55.589771] [<c0197d24>] (suspend_devices_and_enter) from [<c0198a40>] (pm_suspend+0x640/0x75c)
[   55.589771] [<c0198a40>] (pm_suspend) from [<c0196bcc>] (state_store+0x64/0xb8)
[   55.589771] [<c0196bcc>] (state_store) from [<c0307914>] (kernfs_fop_write+0xc0/0x1bc)
[   55.589771] [<c0307914>] (kernfs_fop_write) from [<c028ac80>] (__vfs_write+0x1c/0xd8)
[   55.589771] [<c028ac80>] (__vfs_write) from [<c028bb70>] (vfs_write+0x90/0x16c)
[   55.589771] [<c028bb70>] (vfs_write) from [<c028c890>] (SyS_write+0x44/0x9c)
[   55.589771] [<c028c890>] (SyS_write) from [<c0107840>] (ret_fast_syscall+0x0/0x1c)
[...]

Signed-off-by: Nishanth Menon <nm@ti.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-04-08 08:54:24 -07:00
Radim Krčmář 4a6cd3ba6f KVM/ARM Fixes for v4.6-rc4
Addresses:
  - Wrong indentation in the PMU code from the merge window
  - A long-time bug occuring with running ntpd on the host, candidate for stable
  - Properly handle (and warn about) the unsupported configuration of running on
    systems with less than 40 bits of PA space
  - More fixes to the PM and hotplug notifier stuff from the merge window
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJXB3xgAAoJEEtpOizt6ddy3g4H/39G6Q3UUeDmfC/BFBHWwW9j
 5SOGxiEU9LdZUo/SjSGxeB7Z9+avQqveYUg1P+TSuv2L1Aejawooe1Eo0sL194Fb
 0yci/dJoTtkrS5b8l/05V6UsXruEHEfMYmEmAVPZWew1Zh7HvysZ1R43vRh4r8sO
 rBPLomeKyzqyqGqjAVFZ+V+rQJPlN4CRLup8JirIu7f7jNb8wE//D41ej88v1/Tn
 lF2oKx49uRUpUjBBoPqeus1UAu6Ply033VcKLq2oapyhGzWUG9Vd8OdRulHtroTB
 yBJhpQnX/+ep3l9r2X0ZBu7rVKao2Sd9UsxozaW7W49zhgQKb13IdnTLYkSPHfE=
 =FLXQ
 -----END PGP SIGNATURE-----

Merge tag 'kvm-arm-for-4.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm

KVM/ARM Fixes for v4.6-rc4

Addresses:
 - Wrong indentation in the PMU code from the merge window
 - A long-time bug occuring with running ntpd on the host, candidate for stable
 - Properly handle (and warn about) the unsupported configuration of running on
   systems with less than 40 bits of PA space
 - More fixes to the PM and hotplug notifier stuff from the merge window
2016-04-08 14:17:27 +02:00
Nicolas Pitre 208fae5c3b ARM: 8550/1: protect idiv patching against undefined gcc behavior
It was reported that a kernel with CONFIG_ARM_PATCH_IDIV=y stopped
booting when compiled with the upcoming gcc 6.  Turns out that turning
a function address into a writable array is undefined and gcc 6 decided
it was OK to omit the store to the first word of the function while
still preserving the store to the second word.

Even though gcc 6 is now fixed to behave more coherently, it is a
mystery that gcc 4 and gcc 5 actually produce wanted code in the kernel.
And in fact the reduced test case to illustrate the issue does indeed
break with gcc < 6 as well.

In any case, let's guard the kernel against undefined compiler behavior
by hiding the nature of the array location as suggested by gcc
developers.

Reference: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70128

Signed-off-by: Nicolas Pitre <nico@linaro.org>
Reported-by: Marcin Juszkiewicz <mjuszkiewicz@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: stable@vger.kernel.org # v4.5
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-04-07 21:57:02 +01:00
Russell King f2335a2a0a ARM: wire up preadv2 and pwritev2 syscalls
Wire up the preadv2 and pwritev2 syscalls for ARM.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-04-07 21:57:02 +01:00
Len Brown 5a63426e2a tools/power turbostat: print IRTL MSRs
Some processors use the Interrupt Response Time Limit (IRTL) MSR value
to describe the maximum IRQ response time latency for deep
package C-states.  (Though others have the register, but do not use it)
Lets print it out to give insight into the cases where it is used.

IRTL begain in SNB, with PC3/PC6/PC7, and HSW added PC8/PC9/PC10.

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-04-07 22:18:32 +02:00
Geert Uytterhoeven 7b8ba82ad4 m68k/defconfig: Update defconfigs for v4.6-rc2
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2016-04-07 11:45:31 +02:00
Geert Uytterhoeven 0eb2c80c39 m68k: Wire up preadv2 and pwritev2
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2016-04-07 11:44:44 +02:00
Alexey Brodkin 0dee6c82c2 ARC: [plat-axs103] Enable loop block devices
As mentioned in LTP's README.ARC:
------------->8------------
 Requirements for the environment

* Linux must be built with support of loop block devices. Thus it's
  necessary to enable these Linux kernel options:
  CONFIG_BLK_DEV
  CONFIG_BLK_DEV_LOOP
------------->8------------
enabling loop block devices.

That among other things lead to additional 10 fatal signals
appearing during LTP run.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-04-07 14:59:09 +05:30
Vineet Gupta 6dc97ee6d9 Revert "ARC: [plat-axs10x] add Ethernet PHY description in .dts"
This reverts commit 667a490bdb.

This is needed to get ethernet(stmmac) working in 4.6-rc2 on axs103.

4.5 needed this fix, but apprently stmmac has gained some fixes which
warrant reversal of this.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-04-07 14:59:09 +05:30
Alexey Brodkin e5e0a65cd2 arc: Add our own implementation of fb_pgprotect()
During mmaping of frame-buffer pages to user-space
fb_protect() is called to set proper page settings.

In case of ARC we need to mark pages that are mmaped to
user as uncached because of 2 reasons:
 * Huge amount of data if passing through data cache will
   thrash cache a lot making cache almost useless for other
   less traffic hungry processes.
 * Data written by user in FB will be immediately available for
   hardware (such as PGU etc) without requirements to flush data
   cache regularly.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: linux-snps-arc@lists.infradead.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-04-07 14:59:09 +05:30
Andreas Ziegler 732dc97bae ARC: Don't source drivers/pci/pcie/Kconfig ourselves
Commit 5f8fc43217 ("PCI: Include pci/pcie/Kconfig directly from
pci/Kconfig") in linux-next changed drivers/pci/Kconfig to include
drivers/pci/pcie/Kconfig itself, so that architectures do not need
to source both files themselves. ARC just recently gained PCI support
through commit 6b3fb77998dd ("ARC: Add PCI support"), but this change
was based on the old behaviour of the Kconfig files. This makes
Kconfig now spit out the following warnings:

drivers/pci/pcie/Kconfig:61:warning: choice value used outside its choice group
drivers/pci/pcie/Kconfig:67:warning: choice value used outside its choice group
drivers/pci/pcie/Kconfig:74:warning: choice value used outside its choice group

This change updates the Kconfig file for ARC, dropping the now
unnecessary 'source' statement, which makes the warning disappear.

Signed-off-by: Andreas Ziegler <andreas.ziegler@fau.de>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-04-07 14:59:09 +05:30
Linus Torvalds c4004b02f8 x86: remove the kernel code/data/bss resources from /proc/iomem
Let's see if anybody even notices.  I doubt anybody uses this, and it
does expose addresses that should be randomized, so let's just remove
the code.  It's old and traditional, and it used to be cute, but we
should have removed this long ago.

If it turns out anybody notices and this breaks something, we'll have to
revert this, and maybe we'll end up using other approaches instead
(using %pK or similar).  But removing unnecessary code is always the
preferred option.

Noted-by: Emrah Demir <ed@abdsec.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-06 13:45:07 -07:00
Sudeep Holla 06a71a24ba arm64: KVM: unregister notifiers in hyp mode teardown path
Commit 1e947bad0b ("arm64: KVM: Skip HYP setup when already running
in HYP") re-organized the hyp init code and ended up leaving the CPU
hotplug and PM notifier even if hyp mode initialization fails.

Since KVM is not yet supported with ACPI, the above mentioned commit
breaks CPU hotplug in ACPI boot.

This patch fixes teardown_hyp_mode to properly unregister both CPU
hotplug and PM notifiers in the teardown path.

Fixes: 1e947bad0b ("arm64: KVM: Skip HYP setup when already running in HYP")
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2016-04-06 13:47:52 +02:00
Marc Zyngier 6141570c36 arm64: KVM: Warn when PARange is less than 40 bits
We always thought that 40bits of PA range would be the minimum people
would actually build. Anything less is terrifyingly small.

Turns out that we were both right and wrong. Nobody has ever built
such a system, but the ARM Foundation Model has a PARange set to 36bits.
Just because we can. Oh well. Now, the KVM API explicitely says that
we offer a 40bit PA space to the VM, so we shouldn't run KVM on
the Foundation Model at all.

That being said, this patch offers a less agressive alternative, and
loudly warns about the configuration being unsupported. You'll still
be able to run VMs (at your own risks, though).

This is just a workaround until we have a proper userspace API where
we report the PARange to userspace.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2016-04-06 13:33:14 +02:00
Linus Torvalds 541d8f4d59 Miscellaneous bugfixes. ARM and s390 are new from the merge window,
others are usual stable material.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQEcBAABAgAGBQJXA8x6AAoJEL/70l94x66D0x8H/RcBnc75994RQ++WmHSvD9GF
 yruGB8soLDdjX+Oceol0aEPHokrBu3JtcdoTBe0GwbCKV/F5NkQZ4EfLxDtR3tte
 7ILkPULLy5GElFpJNQuT4pmXzTEspFvXpqHhFik7WVBga3W9wMFQcjbrgmGBUzLE
 p2aJVhZyErpKxGFkUYWhDnlqWsguTTIzv/pqNhLY4VVc0UrXN9AA0fq9RkvgU3KS
 Hxk4/A6SV/b7dyzvttzITww0f1iu8FmlLj2TXapIEoOz7AnInD6KIN0RYpxbDjxN
 bEzEfpahUtuDeM87/t2kHEj0Gn09iHK7/BbCC1Hrwo1CQhbAQ/D0GIvqYAQixf4=
 =NugZ
 -----END PGP SIGNATURE-----

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "Miscellaneous bugfixes.

  The ARM and s390 fixes are for new regressions from the merge window,
  others are usual stable material"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  compiler-gcc: disable -ftracer for __noclone functions
  kvm: x86: make lapic hrtimer pinned
  s390/mm/kvm: fix mis-merge in gmap handling
  kvm: set page dirty only if page has been writable
  KVM: x86: reduce default value of halt_poll_ns parameter
  KVM: Hyper-V: do not do hypercall userspace exits if SynIC is disabled
  KVM: x86: Inject pending interrupt even if pending nmi exist
  arm64: KVM: Register CPU notifiers when the kernel runs at HYP
  arm64: kvm: 4.6-rc1: Fix VTCR_EL2 VS setting
2016-04-05 16:16:00 -07:00
Luiz Capitulino 61abdbe0bc kvm: x86: make lapic hrtimer pinned
When a vCPU runs on a nohz_full core, the hrtimer used by
the lapic emulation code can be migrated to another core.
When this happens, it's possible to observe milisecond
latency when delivering timer IRQs to KVM guests.

The huge latency is mainly due to the fact that
apic_timer_fn() expects to run during a kvm exit. It
sets KVM_REQ_PENDING_TIMER and let it be handled on kvm
entry. However, if the timer fires on a different core,
we have to wait until the next kvm exit for the guest
to see KVM_REQ_PENDING_TIMER set.

This problem became visible after commit 9642d18ee. This
commit changed the timer migration code to always attempt
to migrate timers away from nohz_full cores. While it's
discussable if this is correct/desirable (I don't think
it is), it's clear that the lapic emulation code has
a requirement on firing the hrtimer in the same core
where it was started. This is achieved by making the
hrtimer pinned.

Lastly, note that KVM has code to migrate timers when a
vCPU is scheduled to run in different core. However, this
forced migration may fail. When this happens, we can have
the same problem. If we want 100% correctness, we'll have
to modify apic_timer_fn() to cause a kvm exit when it runs
on a different core than the vCPU. Not sure if this is
possible.

Here's a reproducer for the issue being fixed:

 1. Set all cores but core0 to be nohz_full cores
 2. Start a guest with a single vCPU
 3. Trace apic_timer_fn() and kvm_inject_apic_timer_irqs()

You'll see that apic_timer_fn() will run in core0 while
kvm_inject_apic_timer_irqs() runs in a different core. If
you get both on core0, try running a program that takes 100%
of the CPU and pin it to core0 to force the vCPU out.

Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-04-05 14:19:08 +02:00
Christian Borntraeger 9c650d09a9 s390/mm/kvm: fix mis-merge in gmap handling
commit 1e133ab296 ("s390/mm: split arch/s390/mm/pgtable.c") dropped
some changes from commit a3a92c31bf ("KVM: s390: fix mismatch
between user and in-kernel guest limit") - this breaks KVM for some
memory sizes (kvm-s390: failed to commit memory region) like
exactly 2GB.

Cc: Dominik Dingel <dingel@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-04-05 14:19:07 +02:00
Linus Torvalds c3b1feb024 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
 "This is the first round of MIPS fixes for 4.6:

   - Fix spelling mistakes all over arch/mips
   - Provide __bswapsi2 so XZ kernel compression will build with older GCC
   - ATH79 clock fixes.
   - Fix clock-rated copy-paste erros in ATH79 DTS.
   - Fix gisb-arb compatible string for 7435 BMIPS
   - Enable NAND and UBIFS support in CI20.
   - Fix BUG() assertion caused by inapropriate smp_processor_id() use.
   - Fix exception handling issues for the sake of debuggers
   - Fix the last remaining instance of irq_to_gpio in the db1xxx_ss PCMCIA code
   - Fix MSA unaligned load failures
   - Panic if kernel is configured for a not TLB-supported page size
   - Bail out on unsupported relocs in modules.
   - Partial fix for Qemu breakage after recent IPI rewrite
   - Wire up the preadv2 and pwrite2 syscalls
   - Fix the ar724x clock calculation"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: traps.c: Verify the ISA for microMIPS RDHWR emulation
  MIPS: BMIPS: Fix gisb-arb compatible string for 7435
  MIPS: Bail on unsupported module relocs
  MIPS: dts: qca: ar9132_tl_wr1043nd_v1.dts: use "ref" for reference clock name
  MIPS: ath79: Fix the ar913x reference clock rate
  MIPS: ath79: Fix the ar724x clock calculation
  dt-bindings: clock: qca,ath79-pll: fix copy-paste typos
  MIPS: traps: Correct the SIGTRAP debug ABI in `do_watch' and `do_trap_or_bp'
  FIRMWARE: Broadcom: Fix grammar of warning messages in bcm47xx_sprom.c.
  MIPS: ci20: Enable NAND and UBIFS support in defconfig.
  MIPS: Fix misspellings in comments.
  MIPS: tlb-r4k: panic if the MMU doesn't support PAGE_SIZE
  MIPS: zboot: Remove copied source files on clean
  MIPS: zboot: Fix the build with XZ compression on older GCC versions
  MIPS: Wire up preadv2 and pwrite2 syscalls.
  MIPS: cpu_name_string: Use raw_smp_processor_id().
  pcmcia: db1xxx_ss: fix last irq_to_gpio user
  MIPS: Fix MSA ld unaligned failure cases
  MIPS: Fix broken malta qemu
2016-04-04 16:53:26 -07:00
Linus Torvalds 93e2aeaca5 xen: regression and bug fixes for 4.6-rc2
- Safely migrate event channels between CPUs.
 - Fix CPU hotplug.
 - Maintainer changes.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABAgAGBQJXAkQtAAoJEFxbo/MsZsTRpAoH/R0mVySTK3RloxRo4SPDWs//
 3EIgDFBCde/JfDmhJw7OTLC6oHExq/ObBunV4I6HSStDYjZfHnMXTe7uiRo6oOUt
 ql8/k1P4NM202L2qkjZU89ObPwOMbx50NiHtVG3JAIydZc/jgn4/brow9ZymDAUd
 lp85Oj0d66uM5iIY9YVa5nY/calt5W0rr9EoV93HSf6GFefNJKXJ5u3KW8IgMyIl
 I4/y8GraQLAcXBcmrOny51nlIxsiv1wTssJfExH49/8In3JH3SlbZDGuEiIovPUC
 jJ96Tr/oOhFyPZIM3J7pFYpvn4en84V07zbaWcEUmVf8capv3pjwJNg2Xx64FdI=
 =bSO5
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-4.6-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from David Vrabel:
 "Regression and bug fixes for 4.6-rc2:

   - safely migrate event channels between CPUs
   - fix CPU hotplug
   - maintainer changes"

* tag 'for-linus-4.6-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  MAINTAINERS: xen: Konrad to step down and Juergen to pick up
  xen/events: Mask a moving irq
  Xen on ARM and ARM64: update MAINTAINERS info
  xen/x86: Call cpu_startup_entry(CPUHP_AP_ONLINE_IDLE) from xen_play_dead()
  xen/apic: Provide Xen-specific version of cpu_present_to_apicid APIC op
2016-04-04 16:38:36 -07:00
Linus Torvalds 4a2d057e4f Merge branch 'PAGE_CACHE_SIZE-removal'
Merge PAGE_CACHE_SIZE removal patches from Kirill Shutemov:
 "PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time
  ago with promise that one day it will be possible to implement page
  cache with bigger chunks than PAGE_SIZE.

  This promise never materialized.  And unlikely will.

  Let's stop pretending that pages in page cache are special.  They are
  not.

  The first patch with most changes has been done with coccinelle.  The
  second is manual fixups on top.

  The third patch removes macros definition"

[ I was planning to apply this just before rc2, but then I spaced out,
  so here it is right _after_ rc2 instead.

  As Kirill suggested as a possibility, I could have decided to only
  merge the first two patches, and leave the old interfaces for
  compatibility, but I'd rather get it all done and any out-of-tree
  modules and patches can trivially do the converstion while still also
  working with older kernels, so there is little reason to try to
  maintain the redundant legacy model.    - Linus ]

* PAGE_CACHE_SIZE-removal:
  mm: drop PAGE_CACHE_* and page_cache_{get,release} definition
  mm, fs: remove remaining PAGE_CACHE_* and page_cache_{get,release} usage
  mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
2016-04-04 10:50:24 -07:00
Kirill A. Shutemov ea1754a084 mm, fs: remove remaining PAGE_CACHE_* and page_cache_{get,release} usage
Mostly direct substitution with occasional adjustment or removing
outdated comments.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-04 10:41:08 -07:00
Kirill A. Shutemov 09cbfeaf1a mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time
ago with promise that one day it will be possible to implement page
cache with bigger chunks than PAGE_SIZE.

This promise never materialized.  And unlikely will.

We have many places where PAGE_CACHE_SIZE assumed to be equal to
PAGE_SIZE.  And it's constant source of confusion on whether
PAGE_CACHE_* or PAGE_* constant should be used in a particular case,
especially on the border between fs and mm.

Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much
breakage to be doable.

Let's stop pretending that pages in page cache are special.  They are
not.

The changes are pretty straight-forward:

 - <foo> << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>;

 - <foo> >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>;

 - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN};

 - page_cache_get() -> get_page();

 - page_cache_release() -> put_page();

This patch contains automated changes generated with coccinelle using
script below.  For some reason, coccinelle doesn't patch header files.
I've called spatch for them manually.

The only adjustment after coccinelle is revert of changes to
PAGE_CAHCE_ALIGN definition: we are going to drop it later.

There are few places in the code where coccinelle didn't reach.  I'll
fix them manually in a separate patch.  Comments and documentation also
will be addressed with the separate patch.

virtual patch

@@
expression E;
@@
- E << (PAGE_CACHE_SHIFT - PAGE_SHIFT)
+ E

@@
expression E;
@@
- E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT)
+ E

@@
@@
- PAGE_CACHE_SHIFT
+ PAGE_SHIFT

@@
@@
- PAGE_CACHE_SIZE
+ PAGE_SIZE

@@
@@
- PAGE_CACHE_MASK
+ PAGE_MASK

@@
expression E;
@@
- PAGE_CACHE_ALIGN(E)
+ PAGE_ALIGN(E)

@@
expression E;
@@
- page_cache_get(E)
+ get_page(E)

@@
expression E;
@@
- page_cache_release(E)
+ put_page(E)

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-04 10:41:08 -07:00
Maciej W. Rozycki 3d50a7fb42 MIPS: traps.c: Verify the ISA for microMIPS RDHWR emulation
Make sure it's the microMIPS rather than MIPS16 ISA before emulating
microMIPS RDHWR.  Mostly needed as an optimisation for configurations
where `cpu_has_mmips' is hardcoded to 0 and also a good measure in case
we add further microMIPS instructions to emulate in the future, as the
corresponding MIPS16 encoding is ADDIUSP, not supposed to trap.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12282/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-04 15:25:34 +02:00
Florian Fainelli 6870e707c6 MIPS: BMIPS: Fix gisb-arb compatible string for 7435
The SUN GISB arbiter was added with the wrong compatible string, leading to
using the wrong register layout, use the correct compatible string for this
chip: brcm,bcm7435-gisb-arb.

Fixes: 8394968be4c7 ("MIPS: BMIPS: Add BCM7435 dtsi")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: blogic@openwrt.org
Cc: cernekee@gmail.com
Cc: jogo@openwrt.org
Cc: jaedon.shin@gmail.com
Cc: pgynther@google.com
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12285/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-04 15:25:32 +02:00
Linus Torvalds 4c3b73c6a2 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "Misc kernel side fixes:

   - fix event leak
   - fix AMD PMU driver bug
   - fix core event handling bug
   - fix build bug on certain randconfigs

  Plus misc tooling fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/amd/ibs: Fix pmu::stop() nesting
  perf/core: Don't leak event in the syscall error path
  perf/core: Fix time tracking bug with multiplexing
  perf jit: genelf makes assumptions about endian
  perf hists: Fix determination of a callchain node's childlessness
  perf tools: Add missing initialization of perf_sample.cpumode in synthesized samples
  perf tools: Fix build break on powerpc
  perf/x86: Move events_sysfs_show() outside CPU_SUP_INTEL
  perf bench: Fix detached tarball building due to missing 'perf bench memcpy' headers
  perf tests: Fix tarpkg build test error output redirection
2016-04-03 07:22:12 -05:00
Linus Torvalds 30cebb6ca1 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
 "This lot contains:

   - Some fixups for the fallout of the topology consolidation which
     unearthed AMD/Intel inconsistencies
   - Documentation for the x86 topology management
   - Support for AMD advanced power management bits
   - Two simple cleanups removing duplicated code"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cpu: Add advanced power management bits
  x86/thread_info: Merge two !__ASSEMBLY__ sections
  x86/cpufreq: Remove duplicated TDP MSR macro definitions
  x86/Documentation: Start documenting x86 topology
  x86/cpu: Get rid of compute_unit_id
  perf/x86/amd: Cleanup Fam10h NB event constraints
  x86/topology: Fix AMD core count
2016-04-03 06:32:28 -05:00
Paul Burton 04211a5746 MIPS: Bail on unsupported module relocs
When an unsupported reloc is encountered in a module, we currently
blindly branch to whatever would be at its entry in the reloc handler
function pointer arrays. This may be NULL, or if the unsupported reloc
has a type greater than that of the supported reloc with the highest
type then we'll dereference some value after the function pointer array
& branch to that. The result is at best a kernel oops.

Fix this by checking that the reloc type has an entry in the function
pointer array (ie. is less than the number of items in the array) and
that the handler is non-NULL, returning an error code to fail the module
load if no handler is found.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12432/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 12:32:10 +02:00
Antony Pavlov f7f797cfc6 MIPS: dts: qca: ar9132_tl_wr1043nd_v1.dts: use "ref" for reference clock name
Current ath79 clock.c code does not read reference clock and
pll setup from devicetree. The ar724x_clocks_init() function
recreates the clocks from scratch so devicetree clock
information is dropped. After adding the code which picked up
reference clock from devicetree I have found
that kernel does not boot anymore. The SPI and UART drivers
can't get clk; here are the bootlog error messages:

    of_serial: probe of 18020000.uart failed with error -22
    ath79-spi: probe of 1f000000.spi failed with error -22

The problem is that clock code assumes that reference clock
name is "ref" but current dts-file uses another name: "oscillator".

This patch fixes the problem by changing external oscillator
dt node name to "ref".

Please note that there is an alternative solution for the problem:

    > --- a/arch/mips/boot/dts/qca/ar9132_tl_wr1043nd_v1.dts
    > +++ b/arch/mips/boot/dts/qca/ar9132_tl_wr1043nd_v1.dts
    > @@ -16,6 +16,7 @@
    >
    >         extosc: oscillator {
    >                 compatible = "fixed-clock";
    > +               clock-output-names = "ref";
    >                 #clock-cells = <0>;
    >                 clock-frequency = <40000000>;
    >         };

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: Alban Bedel <albeu@free.fr>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12874/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 12:32:10 +02:00
Alban Bedel f4c87b7a94 MIPS: ath79: Fix the ar913x reference clock rate
The reference clock on ar913x is at 40MHz and not 5MHz. The current
implementation use the wrong reference rate because it doesn't take
the PLL divider in account. But if we fix the code to use the divider
it becomes identical with the implementation for ar724x, so just drop
the broken ar913x implementation.

Signed-off-by: Alban Bedel <albeu@free.fr>
Tested-by: Antony Pavlov <antonynpavlov@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12871/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 12:32:10 +02:00
Weijie Gao c338d59d12 MIPS: ath79: Fix the ar724x clock calculation
According to the AR7242 datasheet section 2.8, AR724X CPUs use a 40MHz
input clock as the REF_CLK instead of 5MHz.

The correct CPU PLL calculation procedure is as follows:
CPU_PLL = (FB * REF_CLK) / REF_DIV / 2.

This patch is compatible with the current calculation procedure with
default FB and REF_DIV values.

Tested on AR7240, AR7241 and AR7242.

Signed-off-by: Weijie Gao <hackpascal@gmail.com>
Signed-off-by: Alban Bedel <albeu@free.fr> (Fixed the commit log message)
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12870/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 12:32:09 +02:00
Antony Pavlov 2b885ea66f dt-bindings: clock: qca,ath79-pll: fix copy-paste typos
Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Cc: Alban Bedel <albeu@free.fr>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12869/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 12:32:09 +02:00
Maciej W. Rozycki 3b143cca6e MIPS: traps: Correct the SIGTRAP debug ABI in `do_watch' and `do_trap_or_bp'
Follow our own rules set in <asm/siginfo.h> for SIGTRAP signals issued
from `do_watch' and `do_trap_or_bp' by setting the signal code to
TRAP_HWBKPT and TRAP_BRKPT respectively, for Watch exceptions and for
those Breakpoint exceptions whose originating BREAK instruction's code
does not have a special meaning.  Keep Trap exceptions unaffected as
these are not debug events.

No existing user software is expected to examine signal codes for these
signals as SI_KERNEL has been always used here.  This change makes the
MIPS port more like other Linux ports, which reduces the complexity and
provides for performance improvement in GDB.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Cc: Pedro Alves <palves@redhat.com>
Cc: Luis Machado <lgustavo@codesourcery.com>
Cc: linux-mips@linux-mips.org
Cc: gdb@sourceware.org
Patchwork: https://patchwork.linux-mips.org/patch/12758/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 12:32:09 +02:00
Ralf Baechle 748ac56bb9 FIRMWARE: Broadcom: Fix grammar of warning messages in bcm47xx_sprom.c.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 12:32:09 +02:00
Harvey Hunt 732d4ba61b MIPS: ci20: Enable NAND and UBIFS support in defconfig.
Update the Ci20's defconfig to enable the JZ4780's NAND driver and
therefore access to the UBIFS rootfs.

Signed-off-by: Harvey Hunt <harvey.hunt@imgtec.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12699/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 12:32:09 +02:00
Adam Buchbinder 92a76f6d85 MIPS: Fix misspellings in comments.
Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: trivial@kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12617/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 12:32:09 +02:00
Paul Burton 091bc3a404 MIPS: tlb-r4k: panic if the MMU doesn't support PAGE_SIZE
After writing the appropriate mask to the cop0 PageMask register, read
the register back & check it matches what we want. If it doesn't then
the MMU does not support the page size the kernel is configured for and
we're better off bailing than continuing to do odd things with TLB
exceptions.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Joshua Kinard <kumba@gentoo.org>
Cc: Rafał Miłecki <zajec5@gmail.com>
Cc: James Hogan <james.hogan@imgtec.com>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10691/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 10:39:26 +02:00
Alban Bedel 8961b28f09 MIPS: zboot: Remove copied source files on clean
The copied source files must be added to the extra-y list to have them
removed on clean.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12233/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 10:37:21 +02:00
Alban Bedel c50ec67875 MIPS: zboot: Fix the build with XZ compression on older GCC versions
Some older GCC version (at least 4.6) emits calls to __bswapsi2() when
building the XZ decompressor. The link of the compressed image then
fails with the following error:

arch/mips/boot/compressed/decompress.o: In function '__fswab32':
include/uapi/linux/swab.h:60: undefined reference to '__bswapsi2'

Add bswapsi.o to the link to fix the build with these versions.

Signed-off-by: Alban Bedel <albeu@free.fr>
Cc: Andrew Bresticker <abrestic@chromium.org>
Cc: Alex Smith <alex.smith@imgtec.com>
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/12232/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 10:37:13 +02:00
Ralf Baechle 62d8e64423 MIPS: Wire up preadv2 and pwrite2 syscalls.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-04-03 09:41:34 +02:00
Andy Gross 10c0f0e92f Revert "dts: msm8974: Add dma channels for blsp2_i2c1 node"
Revert this commit to fix regressions on non-dragonboard MSM8974 boards.
This will be put back in after the correct fixes to the bam driver are
accepted that allow remote processor control of the main control registers.

This reverts commit 0a5d0f85bb.

Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-04-02 21:27:36 -05:00
Andy Gross 338d518898 Revert "dts: msm8974: Add blsp2_bam dma node"
Revert this commit to fix regressions on non-dragonboard MSM8974 boards.
This will be put back in after the correct fixes to the bam driver are
accepted that allow remote processor control of the main control registers.

This reverts commit 62bc817922.

Signed-off-by: Andy Gross <andy.gross@linaro.org>
2016-04-02 21:27:31 -05:00
Linus Torvalds 1826907c1f Power management and ACPI material for v4.6-rc2
Just one fix for a nasty boot failure on some systems based on
 Intel Skylake that shipped with broken firmware where enabling
 hardware-coordinated P-states management (HWP) causes a faulty
 interrupt handler in SMM to be invoked and crash the system
 (Srinivas Pandruvada).
 
 /
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQIcBAABCAAGBQJW/wSwAAoJEILEb/54YlRxuicP/1OiPWqo8VQYfMPOe/6iwyQT
 Z0viPKf6iIreu8B9xtdN3T605t/oNPozHHqOPZEQsa8aUGCK2HS7rPI3NbopQXjC
 q0G9RI0sZ5IcKR17taHvUOD9/vcVnFl8vKNWQebMjvOY6hVw7TZHNYNjTaxq8rW9
 B5qHGTQ+AF/fjWcI3pYLxcRIFEpF3ri7tCiCZgPhQB8p3Qew34ivGMYzYDS+pTcs
 gnkoEpPcn8nnzolGb9lnVQupFBsPLR4I3mExpg3pUD3CiEEMaxyGRiKxpw13CMqJ
 PdLOB1/NZ+/X7kmSmrOMs0x/aKblGIxPypS2MEPMgcMPG2nB9H0qdT6Mp4XHq0Qp
 t9Vp9663gY4XgBqBhAmfd9VlCGHFgBayLAvT4qpmTobKjjQ5f/P2jB6epW/hRsXr
 vVD+rv5Jd65XaK4s4CEYFBqHsI+FzbAeWiSMNCZoToDoDT4pP8oGHV9hZeRjFMEB
 jKkZXLomWt/cOXgWuYM2yNqDuERgZeE3dnu6ZLE5NFbQDTAcI6apy4IMWfu53L+x
 b3Fnlo445853ws5noDJJCR+HXpPLjhV3gMgnOABqyW5PXhn/NiMA+toX4fZcKEkC
 8gYL6HKj7yTl9uoKgBRir+Ra6cGWXd30zf5LWwSZBjlcQNdh7gQB3zSyBGsCI7gZ
 90zlZA2j+sdrMJKJfywh
 =GJ34
 -----END PGP SIGNATURE-----

Merge tag 'pm+acpi-4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fix from Rafael J. Wysocki:
 "Just one fix for a nasty boot failure on some systems based on Intel
  Skylake that shipped with broken firmware where enabling
  hardware-coordinated P-states management (HWP) causes a faulty
  interrupt handler in SMM to be invoked and crash the system (Srinivas
  Pandruvada)"

* tag 'pm+acpi-4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / processor: Request native thermal interrupt handling via _OSC
2016-04-01 19:52:10 -05:00
Linus Torvalds 4e19fd9395 Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton:
 "11 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  .mailmap: add Christophe Ricard
  Make CONFIG_FHANDLE default y
  mm/page_isolation.c: fix the function comments
  oom, oom_reaper: do not enqueue task if it is on the oom_reaper_list head
  mm/page_isolation: fix tracepoint to mirror check function behavior
  mm/rmap: batched invalidations should use existing api
  x86/mm: TLB_REMOTE_SEND_IPI should count pages
  mm: fix invalid node in alloc_migrate_target()
  include/linux/huge_mm.h: return NULL instead of false for pmd_trans_huge_lock()
  mm, kasan: fix compilation for CONFIG_SLAB
  MAINTAINERS: orangefs mailing list is subscribers-only
2016-04-01 19:31:19 -05:00
Rafael J. Wysocki 8fbd4ade93 Merge branch 'acpi-processor'
* acpi-processor:
  ACPI / processor: Request native thermal interrupt handling via _OSC
2016-04-02 01:17:36 +02:00
Russell King 0fc03d4c87 ARM: SMP enable of cache maintanence broadcast
Masahiro Yamada reports that we can fail to set the FW bit in the
auxiliary control register, which enables broadcasting the cache
maintanence operations.  This occurs because we only check that the
SMP/nAMP bit is set, rather than checking whether all the bits we
want to be set are set.

Rearrange the code to ensure that all desired bits are set, and only
update the register if we discover some required bits are not set.

Tested-by: Masahiro Yamada <yamada.masahiro@socionext.com>
2016-04-01 23:27:47 +01:00
Linus Torvalds 4fff505660 arm64 fixes:
- Fix oops when patching in alternative sequences on big-endian CPUs
 - Reconcile asm/perf_event.h after merge window fallout with KVM ARM
 - Defconfig updates
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQEcBAABCgAGBQJW/jkCAAoJELescNyEwWM0xyAH+wdmjlc5WqtgjF68AYRgbWk/
 5GufYlxeMvST7eyT65dZKAyDpJpOBnTXMB7u8KkoGgSEmrdDV0bAjn5CJX41rfxf
 dlc9QDisuCAmxuIkQYGK2IJhnk69ehKhqw0w8dstVW2CSOBYtHnSSNtV8WyrKj+D
 QEM2Z86HCqM8BaSYhxv8Cte8W5fBegCqciJAVQoihAwioiuZ3cgsrLrT2QHaDhin
 gfCTNk/snHG3PAvuy+Kx1PICMH+ur4Enk8bft8xO6HzqSSDsWv/TD35VzcX5pY9V
 PRlC4D5TCEzwQQmFHpUj4PeQytIQge/Y3Ux/OUk1caq0Yei13RhOhR9q2+gTwKI=
 =gJNY
 -----END PGP SIGNATURE-----

Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:

 - fix oops when patching in alternative sequences on big-endian CPUs

 - reconcile asm/perf_event.h after merge window fallout with KVM ARM

 - defconfig updates

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: defconfig: updates for 4.6
  arm64: perf: Move PMU register related defines to asm/perf_event.h
  arm64: opcodes.h: Add arm big-endian config options before including arm header
2016-04-01 17:15:51 -05:00
Nadav Amit 858eaaa711 mm/rmap: batched invalidations should use existing api
The recently introduced batched invalidations mechanism uses its own
mechanism for shootdown.  However, it does wrong accounting of
interrupts (e.g., inc_irq_stat is called for local invalidations),
trace-points (e.g., TLB_REMOTE_SHOOTDOWN for local invalidations) and
may break some platforms as it bypasses the invalidation mechanisms of
Xen and SGI UV.

This patch reuses the existing TLB flushing mechnaisms instead.  We use
NULL as mm to indicate a global invalidation is required.

Fixes 72b252aed5 ("mm: send one IPI per CPU to TLB flush all entries after unmapping pages")
Signed-off-by: Nadav Amit <namit@vmware.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-01 17:03:37 -05:00
Nadav Amit 18c98243dd x86/mm: TLB_REMOTE_SEND_IPI should count pages
TLB_REMOTE_SEND_IPI was recently introduced, but it counts bytes instead
of pages.  In addition, it does not report correctly the case in which
flush_tlb_page flushes a page.  Fix it to be consistent with other TLB
counters.

Fixes: 5b74283ab2 ("x86, mm: trace when an IPI is about to be sent")
Signed-off-by: Nadav Amit <namit@vmware.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-04-01 17:03:37 -05:00
Sudip Mukherjee 4f375903cc s390/seccomp: include generic seccomp header file
Fixes this build error on linux-next:

kernel/seccomp.c: In function '__secure_computing_strict':
kernel/seccomp.c:526:3: error: implicit declaration of function
				'get_compat_mode1_syscalls'

The retrieval of compat syscall numbers were moved into inline function
defined in asm-generic header but the asm-generic header is not being
used by s390.

[heiko.carstens@de.ibm.com]: even though the build error will trigger
only in the next merge window it makes sense to include the generic
header file already now.

Fixes: ("seccomp: Get compat syscalls from asm-generic header")
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-04-01 17:20:55 +02:00
Sebastian Ott 9d89d9e61d s390/pci: add extra padding to function measurement block
Newer machines might use a different (larger) format for function
measurement blocks. To ensure that we comply with the alignment
requirement on these machines and prevent memory corruption (when
firmware writes more data than we expect) add 16 padding bytes
at the end of the fmb.

Cc: stable@vger.kernel.org # v4.1+
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2016-04-01 17:20:55 +02:00
Srinivas Kandagatla bb4add2ce9 ARM: dts: apq8064: add ahci ports-implemented mask
This patch adds new ports-implemented mask, which is required to get
achi working on the mainline. Without this patch value read from
PORTS_IMPL register which is zero would not enable any ports for
software to use.

Fixes: 566d1827df ("libata: disable forced PORTS_IMPL for >= AHCI 1.3")
Cc: stable@vger.kernel.org # v4.5+
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Reviewed-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
2016-04-01 10:30:31 -04:00
Linus Torvalds 52bef0cb10 powerpc fixes for 4.6
- Fixup preempt underflow with huge pages from Sebastian Siewior
  - Fix altivec SPR not being saved from Oliver O'Halloran
  - Correct used_vsr comment from Simon Guo
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJW/ki6AAoJEFHr6jzI4aWAH14QAKWhKBtOVNW0XHWMexfam4t2
 W5R9OstmXCPzxK4xfXK2R4ixQDSg3XIsZhWlD36lEb8UqcGz0sshrKbcBO0ZKsNd
 4zYkmK4lX8qiQ1fpZp/5ISIl6+kX3ogLzIsGcw7S3SedhQgpfOSNZOQIOxQeNkwg
 NCcVk8J7s2KVRQMRme85iaoWKOSDoW9vQ3Jem0w5uSUlG48jTIPEL16OckFt9CsI
 gHTTH6ypzWmYjfauMW3US3yCUB2maKsM4kDR9bvETu/32zvwAW6dP9164DhTrH5S
 8frQeRXvlk3jbXlpUqRI4fGTWKoCufFCtRzYEUlYLxo+fxmqLX+VbbhLHoHJbA2Z
 1wU/Q0vyK2XxFAV9BijJfnNqfejSGR/sKX1bxqs3dPxgeAP/0qU1DI6DX9GwSQum
 ikYAj1ZK7NUsnRcekMwfR/uoIQsDryTt9w/SQRoZ4xqpRNbjJM6bqbzeurNxIpKj
 2LuxqJJFdy0iduTpmkVDeNUd5xwEYFDlt+p+uYlZhRE4EQTzUbysSUxAsbscazGX
 jJT/ACzco4B3qYYwepLVCV1oYFTL7/zissq6DGiO99DLOrRU1ON3We2Ouow+ykdV
 oD2DDz0kPFgmnECMhSl2pApCUeRG7Kw0QPT317W+DaPFDccgkOPg7u477aVvMlEP
 3VHmTLoy+7ze0erDjFzo
 =9i5T
 -----END PGP SIGNATURE-----

Merge tag 'powerpc-4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 - Fixup preempt underflow with huge pages from Sebastian Siewior
 - Fix altivec SPR not being saved from Oliver O'Halloran
 - Correct used_vsr comment from Simon Guo

* tag 'powerpc-4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc: Correct used_vsr comment
  powerpc/process: Fix altivec SPR not being saved
  powerpc/mm: Fixup preempt underflow with huge pages
2016-04-01 07:18:27 -05:00
Linus Torvalds dc8a64ee1a Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
 - A proper fix for the locking issue in the dasd driver
 - Wire up the new preadv2 nad pwritev2 system calls
 - Add the mark_rodata_ro function and set DEBUG_RODATA=y
 - A few more bug fixes.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: wire up preadv2/pwritev2 syscalls
  s390/pci: PCI function group 0 is valid for clp_query_pci_fn
  s390/crypto: provide correct file mode at device register.
  s390/mm: handle PTE-mapped tail pages in fast gup
  s390: add DEBUG_RODATA support
  s390: disable postinit-readonly for now
  s390/dasd: reorder lcu and device lock
  s390/cpum_sf: Fix cpu hotplug notifier transitions
  s390/cpum_cf: Fix missing cpu hotplug notifier transition
2016-04-01 07:15:54 -05:00
Yu Zhao 14f4760562 kvm: set page dirty only if page has been writable
In absence of shadow dirty mask, there is no need to set page dirty
if page has never been writable. This is a tiny optimization but
good to have for people who care much about dirty page tracking.

Signed-off-by: Yu Zhao <yuzhao@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-04-01 12:10:10 +02:00
Paolo Bonzini 14ebda3394 KVM: x86: reduce default value of halt_poll_ns parameter
Windows lets applications choose the frequency of the timer tick,
and in Windows 10 the maximum rate was changed from 1024 Hz to
2048 Hz.  Unfortunately, because of the way the Windows API
works, most applications who need a higher rate than the default
64 Hz will just do

   timeGetDevCaps(&tc, sizeof(tc));
   timeBeginPeriod(tc.wPeriodMin);

and pick the maximum rate.  This causes very high CPU usage when
playing media or games on Windows 10, even if the guest does not
actually use the CPU very much, because the frequent timer tick
causes halt_poll_ns to kick in.

There is no really good solution, especially because Microsoft
could sooner or later bump the limit to 4096 Hz, but for now
the best we can do is lower a bit the upper limit for
halt_poll_ns. :-(

Reported-by: Jon Panozzo <jonp@lime-technology.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-04-01 12:10:10 +02:00