Commit Graph

106827 Commits

Author SHA1 Message Date
Peter Chen 40f737791d ARM: imx6qdl-sabresd: set swbst_reg as vbus's parent reg
USB vbus 5V is from PMIC SWBST, so set swbst_reg as vbus's
parent reg, it fixed a bug that the voltage of vbus is incorrect
due to swbst_reg is disabled after boots up.

Cc: stable@vger.kernel.org
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2015-03-11 09:21:06 +08:00
Paolo Bonzini dc9be0fac7 kvm: move advertising of KVM_CAP_IRQFD to common code
POWER supports irqfds but forgot to advertise them.  Some userspace does
not check for the capability, but others check it---thus they work on
x86 and s390 but not POWER.

To avoid that other architectures in the future make the same mistake, let
common code handle KVM_CAP_IRQFD the same way as KVM_CAP_IRQFD_RESAMPLE.

Reported-and-tested-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Fixes: 297e21053a
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 21:18:59 -03:00
Russell King 6d021b7244 ARM: dump pgd, pmd and pte states on unhandled data abort faults
It can be useful to dump the page table entries when an unhandled data
abort fault occurs.  This can aid debugging of these situations, for
example, a STREX instruction causing an external abort on non-linefetch
fault, as has been reported recently.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-03-10 19:54:56 +00:00
Russell King 8bf1268f48 ARM: dma-api: fix off-by-one error in __dma_supported()
When validating the mask against the amount of memory we have available
(so that we can trap 32-bit DMA addresses with >32-bits memory), we had
not taken account of the fact that max_pfn is the maximum PFN number
plus one that would be in the system.

There are several references in the code which bear this out:

mm/page_owner.c:
	for (; pfn < max_pfn; pfn++) {
	}

arch/x86/kernel/setup.c:
	high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1)

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-03-10 19:48:35 +00:00
Andy Lutomirski 394838c960 x86/asm/entry/32: Fix user_mode() misuses
The one in do_debug() is probably harmless, but better safe than sorry.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Cc: <stable@vger.kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/d67deaa9df5458363623001f252d1aee3215d014.1425948056.git.luto@amacapital.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-10 04:21:51 +01:00
Linus Torvalds affb8172de Merge git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm/s390 bugfixes from Marcelo Tosatti.

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: s390: non-LPAR case obsolete during facilities mask init
  KVM: s390: include guest facilities in kvm facility test
  KVM: s390: fix in memory copy of facility lists
  KVM: s390/cpacf: Fix kernel bug under z/VM
  KVM: s390/cpacf: Enable key wrapping by default
2015-03-09 18:59:50 -07:00
Linus Torvalds ec0e6bd3f1 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
 "One performance optimization for page_clear and a couple of bug fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/mm: fix incorrect ASCE after crst_table_downgrade
  s390/ftrace: fix crashes when switching tracers / add notrace to cpu_relax()
  s390/pci: unify pci_iomap symbol exports
  s390/pci: fix [un]map_resources sequence
  s390: let the compiler do page clearing
  s390/pci: fix possible information leak in mmio syscall
  s390/dcss: array index 'i' is used before limits check.
  s390/scm_block: fix off by one during cluster reservation
  s390/jump label: improve and fix sanity check
  s390/jump label: add missing jump_label_apply_nops() call
2015-03-09 18:55:52 -07:00
Linus Torvalds 36bef88380 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) nft_compat accidently truncates ethernet protocol to 8-bits, from
    Arturo Borrero.

 2) Memory leak in ip_vs_proc_conn(), from Julian Anastasov.

 3) Don't allow the space required for nftables rules to exceed the
    maximum value representable in the dlen field.  From Patrick
    McHardy.

 4) bcm63xx_enet can accidently leave interrupts permanently disabled
    due to errors in the NAPI polling exit logic.  Fix from Nicolas
    Schichan.

 5) Fix OOPSes triggerable by the ping protocol module, due to missing
    address family validations etc.  From Lorenzo Colitti.

 6) Don't use RCU locking in sleepable context in team driver, from Jiri
    Pirko.

 7) xen-netback miscalculates statistic offset pointers when reporting
    the stats to userspace.  From David Vrabel.

 8) Fix a leak of up to 256 pages per VIF destroy in xen-netaback, also
    from David Vrabel.

 9) ip_check_defrag() cannot assume that skb_network_offset(),
    particularly when it is used by the AF_PACKET fanout defrag code.
    From Alexander Drozdov.

10) gianfar driver doesn't query OF node names properly when trying to
    determine the number of hw queues available.  Fix it to explicitly
    check for OF nodes named queue-group.  From Tobias Waldekranz.

11) MID field in macb driver should be 12 bits, not 16.  From Punnaiah
    Choudary Kalluri.

12) Fix unintentional regression in traceroute due to timestamp socket
    option changes.  Empty ICMP payloads should be allowed in
    non-timestamp cases.  From Willem de Bruijn.

13) When devices are unregistered, we have to get rid of AF_PACKET
    multicast list entries that point to it via ifindex.  Fix from
    Francesco Ruggeri.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (38 commits)
  tipc: fix bug in link failover handling
  net: delete stale packet_mclist entries
  net: macb: constify macb configuration data
  MAINTAINERS: add Marc Kleine-Budde as co maintainer for CAN networking layer
  MAINTAINERS: linux-can moved to github
  can: kvaser_usb: Read all messages in a bulk-in URB buffer
  can: kvaser_usb: Avoid double free on URB submission failures
  can: peak_usb: fix missing ctrlmode_ init for every dev
  can: add missing initialisations in CAN related skbuffs
  ip: fix error queue empty skb handling
  bgmac: Clean warning messages
  tcp: align tcp_xmit_size_goal() on tcp_tso_autosize()
  net: fec: fix unbalanced clk disable on driver unbind
  net: macb: Correct the MID field length value
  net: gianfar: correctly determine the number of queue groups
  ipv4: ip_check_defrag should not assume that skb_network_offset is zero
  net: bcmgenet: properly disable password matching
  net: eth: xgene: fix booting with devicetree
  bnx2x: Force fundamental reset for EEH recovery
  xen-netback: refactor xenvif_handle_frag_list()
  ...
2015-03-09 18:17:21 -07:00
Boris Brezillon 05d6a08847 ARM: at91/dt: at91sam9261: fix clocks and clock-names in udc definition
Peripheral clock is named pclk and system clock is named hclk (those are
the names expected by the at91_udc driver).

Drop the deprecated usb_clk (formerly used to configure the usb clock rate
which is now directly configurable through hclk).

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-09 12:28:09 +01:00
Linus Torvalds 9aae0df6a3 arm64 and generic kernel/module.c (acked by Rusty) fixes for
CONFIG_DEBUG_SET_MODULE_RONX.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:
 "arm64 and generic kernel/module.c (acked by Rusty) fixes for
  CONFIG_DEBUG_SET_MODULE_RONX"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  kernel/module.c: Update debug alignment after symtable generation
  arm64: Don't use is_module_addr in setting page attributes
2015-03-07 11:31:17 -08:00
Tony Lindgren 5b7610f235 ARM: OMAP2+: Fix wl12xx on dm3730-evm with mainline u-boot
I upgraded my u-boot and noticed that wl12xx stopped working.
Turns out the kernel is not setting the quirk for the MMC2
copy clock while the eariler bootloader I had was setting it.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-06 10:37:34 -08:00
Linus Torvalds 39ed853a24 Power management and ACPI fixes for v4.0-rc3
- Fix ACPI resources management problems introduced by the recent
    rework of the code in question (Jiang Liu) and a build issue
    introduced by those changes (Joachim Nilsson).
 
  - Fix a recent suspend-to-idle regression on systems where entering
    idle states causes local timers to stop, prevent suspend-to-idle
    from crashing in restricted configurations (no cpuidle driver,
    cpuidle disabled etc.) and clean up the idle loop somewhat while
    at it (Rafael J Wysocki).
 
  - Fix build problem in the cpufreq ppc driver (Geert Uytterhoeven).
 
  - Allow the ACPI backlight driver module to be loaded if ACPI is
    disabled which helps the i915 driver in those configurations
    (stable-candidate) and change the code to help debug unusual use
    cases (Chris Wilson).
 
  - Wakeup IRQ management changes in v3.18 caused some drivers on the
    at91 platform to trigger a warning from the IRQ core related to
    an unexpected combination of interrupt action handler flags.
    However, on at91 a timer IRQ is shared with some other devices
    (including system wakeup ones) and that leads to the unusual
    combination of flags in question.  To make it possible to avoid
    the warning introduce a new interrupt action handler flag (which
    can be used by drivers to indicate the special case to the core)
    and rework the problematic at91 drivers to use it and work as
    expected during system suspend/resume.  From Boris Brezillon,
    Rafael J Wysocki and Mark Rutland.
 
  - Clean up the generic power domains subsystem's debugfs interface
    (Kevin Hilman).
 
 /
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Merge tag 'pm+acpi-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fixes from Rafael Wysocki:
 "These are fixes for recent regressions (ACPI resources management,
  suspend-to-idle), stable-candidate fixes (ACPI backlight), fixes
  related to the wakeup IRQ management changes made in v3.18, other
  fixes (suspend-to-idle, cpufreq ppc driver) and a couple of cleanups
  (suspend-to-idle, generic power domains, ACPI backlight).

  Specifics:

   - Fix ACPI resources management problems introduced by the recent
     rework of the code in question (Jiang Liu) and a build issue
     introduced by those changes (Joachim Nilsson).

   - Fix a recent suspend-to-idle regression on systems where entering
     idle states causes local timers to stop, prevent suspend-to-idle
     from crashing in restricted configurations (no cpuidle driver,
     cpuidle disabled etc.) and clean up the idle loop somewhat while at
     it (Rafael J Wysocki).

   - Fix build problem in the cpufreq ppc driver (Geert Uytterhoeven).

   - Allow the ACPI backlight driver module to be loaded if ACPI is
     disabled which helps the i915 driver in those configurations
     (stable-candidate) and change the code to help debug unusual use
     cases (Chris Wilson).

   - Wakeup IRQ management changes in v3.18 caused some drivers on the
     at91 platform to trigger a warning from the IRQ core related to an
     unexpected combination of interrupt action handler flags.  However,
     on at91 a timer IRQ is shared with some other devices (including
     system wakeup ones) and that leads to the unusual combination of
     flags in question.

     To make it possible to avoid the warning introduce a new interrupt
     action handler flag (which can be used by drivers to indicate the
     special case to the core) and rework the problematic at91 drivers
     to use it and work as expected during system suspend/resume.  From
     Boris Brezillon, Rafael J Wysocki and Mark Rutland.

   - Clean up the generic power domains subsystem's debugfs interface
     (Kevin Hilman)"

* tag 'pm+acpi-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  genirq / PM: describe IRQF_COND_SUSPEND
  tty: serial: atmel: rework interrupt and wakeup handling
  watchdog: at91sam9: request the irq with IRQF_NO_SUSPEND
  cpuidle / sleep: Use broadcast timer for states that stop local timer
  clk: at91: implement suspend/resume for the PMC irqchip
  rtc: at91rm9200: rework wakeup and interrupt handling
  rtc: at91sam9: rework wakeup and interrupt handling
  PM / wakeup: export pm_system_wakeup symbol
  genirq / PM: Add flag for shared NO_SUSPEND interrupt lines
  ACPI / video: Propagate the error code for acpi_video_register
  ACPI / video: Load the module even if ACPI is disabled
  PM / Domains: cleanup: rename gpd -> genpd in debugfs interface
  cpufreq: ppc: Add missing #include <asm/smp.h>
  x86/PCI/ACPI: Relax ACPI resource descriptor checks to work around BIOS bugs
  x86/PCI/ACPI: Ignore resources consumed by host bridge itself
  cpuidle: Clean up fallback handling in cpuidle_idle_call()
  cpuidle / sleep: Do sanity checks in cpuidle_enter_freeze() too
  idle / sleep: Avoid excessive disabling and enabling interrupts
  PCI: versatile: Update for list_for_each_entry() API change
  genirq / PM: better describe IRQF_NO_SUSPEND semantics
2015-03-06 10:36:09 -08:00
Tony Lindgren 796919c34a ARM: OMAP2+: first set of hwmod and PRCM fixes for v4.0-rc
This series fixes the following bugs:
 
 - a lockdep problem with the OMAP hwmod code;
 - incorrect PCIe hwmod data for the DRA7xx chips;
 - the clockdomain handling in the hardreset deassertion code,
   preventing idle;
 - the use of an IRQ status register rather than an IRQ enable register
   in the OMAP4 PRM code.
 
 Basic build, boot, and PM test results are available here:
 
 http://www.pwsan.com/omap/testlogs/omap-hwmod-a-for-v4.0-rc/20150301165949/
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Merge tag 'for-v4.0-rc/omap-fixes-a' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v4.0/fixes

ARM: OMAP2+: first set of hwmod and PRCM fixes for v4.0-rc

This series fixes the following bugs:

- a lockdep problem with the OMAP hwmod code;
- incorrect PCIe hwmod data for the DRA7xx chips;
- the clockdomain handling in the hardreset deassertion code,
  preventing idle;
- the use of an IRQ status register rather than an IRQ enable register
  in the OMAP4 PRM code.

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

http://www.pwsan.com/omap/testlogs/omap-hwmod-a-for-v4.0-rc/20150301165949/
2015-03-06 09:54:02 -08:00
Aaro Koskinen 2725917fd5 ARM: OMAP: enable TWL4030_USB in omap2plus_defconfig
Enable TWL4030_USB which is used at least on Nokia N900/N950/N9 (OMAP3)
and BeagleBoard.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
[tony@atomide.com: updated comments]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-06 09:48:12 -08:00
Roger Quadros d80d581bf3 ARM: dts: dra7x-evm: avoid possible contention while muxing on CAN lines
DCAN1 RX and TX lines are internally pulled high according to [1].
While muxing between DCAN mode and SAFE mode we make sure
that the same pull direction is set to minimize opposite
pull contention during the switching window.

[1] in DRA7 data manual, Ball characteristics table 4-2, DSIS colum shows
the state driven to the peripheral input while in the deselcted mode.
DSIS - De-Selected Input State.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-06 09:22:27 -08:00
Roger Quadros 9b5580854f ARM: dts: dra7x-evm: Don't use dcan1_rx.gpio1_15 in DCAN pinctrl
Rev.F onwards ball G19 (dcan1_rx) is used as a GPIO for some other
function so don't include it in DCAN pinctrl node.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-06 09:22:27 -08:00
Tero Kristo 38f5c8ba30 ARM: dts: OMAP5: fix polling intervals for thermal zones
OMAP4 has a finer counter granularity, which allows for a delay of 1000ms
in the thermal zone polling intervals. OMAP5 has a different counter
mechanism, which allows at maximum a 500ms timer. Adjust the cpu thermal
zone polling interval accordingly.

Without this patch, the polling interval information is simply ignored,
and the following thermal warnings are printed during boot (assuming
thermal is enabled);

[    1.545343] ti-soc-thermal 4a0021e0.bandgap: Delay 1000 ms is not supported
[    1.552691] ti-soc-thermal 4a0021e0.bandgap: Delay 1000 ms is not supported
[    1.560029] ti-soc-thermal 4a0021e0.bandgap: Delay 1000 ms is not supported

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-06 09:07:17 -08:00
George McCollister 87be4891d8 ARM: dts: am335x-lxm: Use rmii-clock-ext
Use external clock for RMII since the internal clock doesn't meet the
jitter requirements.

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-06 09:02:41 -08:00
Matt Porter a43b446dcc ARM: dts: am335x-bone-common: enable aes and sham
Beaglebone Black doesn't have AES and SHAM enabled like the
original Beaglebone White dts. This breaks applications that
leverage the crypto blocks so fix this by enabling these nodes
in the am335x-bone-common.dtsi. With this change, enabling the
nodes in am335x-bone.dts is no longer required so remove them.

Signed-off-by: Matt Porter <mporter@konsulko.com>
Acked-by: Robert Nelson <robertcnelson@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-06 08:56:01 -08:00
Vignesh R 7d53d25578 ARM: dts: am43xx-clocks: Fix ehrpwm tbclk data on am43xx
ehrpwm tbclk is wrongly modelled as deriving from dpll_per_m2_ck.
The TRM says tbclk is derived from SYSCLKOUT. SYSCLKOUT nothing but the
functional clock of pwmss (l4ls_gclk).
Fix this by changing source of ehrpwmx_tbclk to l4ls_gclk.

Fixes: 4da1c67719 ("add tbclk data for ehrpwm")
Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-06 08:52:36 -08:00
Vignesh R 6e22616eba ARM: dts: am33xx-clocks: Fix ehrpwm tbclk data on am33xx
ehrpwm tbclk is wrongly modelled as deriving from dpll_per_m2_ck.
The TRM says tbclk is derived from SYSCLKOUT. SYSCLKOUT nothing but the
functional clock of pwmss (l4ls_gclk).
Fix this by changing source of ehrpwmx_tbclk to l4ls_gclk.

Fixes: 9e100ebafb91: ("Fix ehrpwm tbclk data")
Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-06 08:51:48 -08:00
Ravikumar Kattekola ac92abcb96 ARM: dts: OMAP5: Fix the bypass clock source for dpll_iva and others
Fixes 85dc74e9 (ARM: dts: omap5 clock data)

On OMAP54xx, For DPLL_IVA, the ref clock(CLKINP) is connected to sys_clk1 and
the bypass input(CLKINPULOW) is connected to iva_dpll_hs_clk_div clock.
But the bypass input is not directly routed to bypass clkout instead
both CLKINP and CLKINPULOW are connected to bypass clkout via a mux.

This mux is controlled by the bit - CM_CLKSEL_DPLL_IVA[23]:DPLL_BYP_CLKSEL
and it's POR value is zero which selects the CLKINP as bypass clkout.
which means iva_dpll_hs_clk_div is not the bypass clock for dpll_iva_ck

Fix this by adding another mux clock as parent in bypass mode.

This design is common to most of the PLLs and the rest have only one bypass
clock. Below is a list of the DPLLs that need this fix:

DPLL_IVA,
DPLL_PER,
DPLL_USB and DPLL_CORE

Signed-off-by: Ravikumar Kattekola <rk@ti.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-06 08:36:33 -08:00
Ravikumar Kattekola d2192ea098 ARM: dts: DRA7x: Fix the bypass clock source for dpll_iva and others
Fixes: ee6c750761 (ARM: dts: dra7 clock data)

On DRA7x, For DPLL_IVA, the ref clock(CLKINP) is connected to sys_clk1 and
the bypass input(CLKINPULOW) is connected to iva_dpll_hs_clk_div clock.
But the bypass input is not directly routed to bypass clkout instead
both CLKINP and CLKINPULOW are connected to bypass clkout via a mux.

This mux is controlled by the bit - CM_CLKSEL_DPLL_IVA[23]:DPLL_BYP_CLKSEL
and it's POR value is zero which selects the CLKINP as bypass clkout.
which means iva_dpll_hs_clk_div is not the bypass clock for dpll_iva_ck

Fix this by adding another mux clock as parent in bypass mode.

This design is common to most of the PLLs and the rest have only one bypass
clock. Below is a list of the DPLLs that need this fix:

DPLL_IVA, DPLL_DDR,
DPLL_DSP, DPLL_EVE,
DPLL_GMAC, DPLL_PER,
DPLL_USB and DPLL_CORE

Signed-off-by: Ravikumar Kattekola <rk@ti.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-03-06 08:34:21 -08:00
Laura Abbott 8b5f5a073f arm64: Don't use is_module_addr in setting page attributes
The set_memory_* functions currently only support module
addresses. The addresses are validated using is_module_addr.
That function is special though and relies on internal state
in the module subsystem to work properly. At the time of
module initialization and calling set_memory_*, it's too early
for is_module_addr to work properly so it always returns
false. Rather than be subject to the whims of the module state,
just bounds check against the module virtual address range.

Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-03-06 12:04:22 +00:00
Jiri Slaby e893286918 x86/vdso: Fix the build on GCC5
On gcc5 the kernel does not link:

  ld: .eh_frame_hdr table[4] FDE at 0000000000000648 overlaps table[5] FDE at 0000000000000670.

Because prior GCC versions always emitted NOPs on ALIGN directives, but
gcc5 started omitting them.

.LSTARTFDEDLSI1 says:

        /* HACK: The dwarf2 unwind routines will subtract 1 from the
           return address to get an address in the middle of the
           presumed call instruction.  Since we didn't get here via
           a call, we need to include the nop before the real start
           to make up for it.  */
        .long .LSTART_sigreturn-1-.     /* PC-relative start address */

But commit 69d0627a7f ("x86 vDSO: reorder vdso32 code") from 2.6.25
replaced .org __kernel_vsyscall+32,0x90 by ALIGN right before
__kernel_sigreturn.

Of course, ALIGN need not generate any NOP in there. Esp. gcc5 collapses
vclock_gettime.o and int80.o together with no generated NOPs as "ALIGN".

So fix this by adding to that point at least a single NOP and make the
function ALIGN possibly with more NOPs then.

Kudos for reporting and diagnosing should go to Richard.

Reported-by: Richard Biener <rguenther@suse.de>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Andy Lutomirski <luto@amacapital.net>
Cc: <stable@vger.kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1425543211-12542-1-git-send-email-jslaby@suse.cz
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-06 09:34:45 +01:00
Rafael J. Wysocki 8204680c7b Merge branch 'acpi-resources'
* acpi-resources:
  x86/PCI/ACPI: Relax ACPI resource descriptor checks to work around BIOS bugs
  x86/PCI/ACPI: Ignore resources consumed by host bridge itself
  PCI: versatile: Update for list_for_each_entry() API change
2015-03-05 23:14:40 +01:00
Linus Torvalds 99aedde086 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: EFI fixes, an Intel Quark fix, an asm fix and an FPU
  handling fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/fpu/xsaves: Fix improper uses of __ex_table
  x86/intel/quark: Select COMMON_CLK
  x86/asm/entry/64: Remove a bogus 'ret_from_fork' optimization
  firmware: dmi_scan: Fix dmi_len type
  efi/libstub: Fix boundary checking in efi_high_alloc()
  firmware: dmi_scan: Fix dmi scan to handle "End of Table" structure
2015-03-05 11:25:23 -08:00
Marcelo Tosatti bfb8fb4775 KVM: s390: Fixups for changes in merge window for 4.0
Here are some fixups/improvements for
 
 commit 658b6eda20 ("KVM: s390: add cpu model support")
 commit 9d8d578605 ("KVM: s390: use facilities and cpu_id per KVM")
 commit a374e892c3 ("KVM: s390/cpacf: Enable/disable protected key
 functions for kvm guest")
 commit 45c9b47c58 ("KVM: s390/CPACF: Choose crypto control block format")
 
 which all have been merged during the merge window for 4.0.
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Merge tag 'kvm-s390-master-20150303' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux

KVM: s390: Fixups for changes in merge window for 4.0

Here are some fixups/improvements for

commit 658b6eda20 ("KVM: s390: add cpu model support")
commit 9d8d578605 ("KVM: s390: use facilities and cpu_id per KVM")
commit a374e892c3 ("KVM: s390/cpacf: Enable/disable protected key
functions for kvm guest")
commit 45c9b47c58 ("KVM: s390/CPACF: Choose crypto control block format")

which all have been merged during the merge window for 4.0.
2015-03-05 14:42:48 -03:00
Quentin Casasnovas 06c8173eb9 x86/fpu/xsaves: Fix improper uses of __ex_table
Commit:

  f31a9f7c71 ("x86/xsaves: Use xsaves/xrstors to save and restore xsave area")

introduced alternative instructions for XSAVES/XRSTORS and commit:

  adb9d526e9 ("x86/xsaves: Add xsaves and xrstors support for booting time")

added support for the XSAVES/XRSTORS instructions at boot time.

Unfortunately both failed to properly protect them against faulting:

The 'xstate_fault' macro will use the closest label named '1'
backward and that ends up in the .altinstr_replacement section
rather than in .text. This means that the kernel will never find
in the __ex_table the .text address where this instruction might
fault, leading to serious problems if userspace manages to
trigger the fault.

Signed-off-by: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Signed-off-by: Jamie Iles <jamie.iles@oracle.com>
[ Improved the changelog, fixed some whitespace noise. ]
Acked-by: Borislav Petkov <bp@alien8.de>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@vger.kernel.org>
Cc: Allan Xavier <mr.a.xavier@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: adb9d526e9 ("x86/xsaves: Add xsaves and xrstors support for booting time")
Fixes: f31a9f7c71 ("x86/xsaves: Use xsaves/xrstors to save and restore xsave area")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-05 18:20:36 +01:00
Andy Shevchenko 9ab6eb51ef x86/intel/quark: Select COMMON_CLK
The commit 8bbc2a135b ("x86/intel/quark: Add Intel Quark
platform support") introduced a minimal support of Intel Quark
SoC. That allows to use core parts of the SoC. However, the SPI,
I2C, and GPIO drivers can't be selected by kernel configuration
because they depend on COMMON_CLK. The patch adds a COMMON_CLK
selection to the platfrom definition to allow user choose the drivers.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Ong, Boon Leong <boon.leong.ong@intel.com>
Cc: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Cc: Darren Hart <dvhart@linux.intel.com>
Fixes: 8bbc2a135b ("x86/intel/quark: Add Intel Quark platform support")
Link: http://lkml.kernel.org/r/1425569044-2867-1-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-05 17:44:53 +01:00
Patrice Vilchez 5957457a2d ARM: at91/pm: MOR register KEY was missing
Because writing the MOR register requires the PASSWD(0x37),
if missed, the write operation will be aborted.

Signed-off-by: Patrice Vilchez <patrice.vilchez@atmel.com>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-05 11:43:02 +01:00
Boris BREZILLON db68e71a0e ARM: at91/dt: sama5d4: fix lcdck clock definition
lcdck takes mck (not smd) as its parent. It is also assigned id 3 and not 4.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
[nicolas.ferre@atmel.com: squashed 2 related patches]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-05 10:58:59 +01:00
Boris BREZILLON b6d7d3f1f3 ARM: at91/dt: sama5d4: rename lcd_clk into lcdc_clk
Rename lcd_clk into lcdc_clk to be consistent with sama5d3 clock
definitions.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-05 10:58:51 +01:00
Alexandre Belloni 5a5a6451ac ARM: at91: debug: fix non MMU debug
Linux may be used without MMU on atmel SoCs, fix debug in this configuration.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-05 10:55:13 +01:00
Arnd Bergmann 04b91701d4 ARM: fix typos in smc91x platform data
I recently did a rework of the smc91x driver and did some build-testing
by compiling hundreds of randconfig kernels. Unfortunately, my script
was wrong and did not actually test the configurations that mattered,
so I introduced stupid typos in almost every file I touched.

I fixed my script now, built all configurations that actually matter
and fixed all the typos, this is the result.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: b70661c708 ("net: smc91x: use run-time configuration on all ARM machines")
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-04 23:32:26 -05:00
Andy Lutomirski 956421fbb7 x86/asm/entry/64: Remove a bogus 'ret_from_fork' optimization
'ret_from_fork' checks TIF_IA32 to determine whether 'pt_regs' and
the related state make sense for 'ret_from_sys_call'.  This is
entirely the wrong check.  TS_COMPAT would make a little more
sense, but there's really no point in keeping this optimization
at all.

This fixes a return to the wrong user CS if we came from int
0x80 in a 64-bit task.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/4710be56d76ef994ddf59087aad98c000fbab9a4.1424989793.git.luto@amacapital.net
[ Backported from tip:x86/asm. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-05 01:12:23 +01:00
Tyler Baker b09e0ec4dd ARM: multi_v7_defconfig: increase the number of maximum number of CPUs to 16
The HiSilicon HiP04 has 16 CPUs. I propose we increase the maximum number of CPUs to 16 to avoid the following warning identified during automated boot testing [1].

------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at ../arch/arm/kernel/devtree.c:144 arm_dt_init_cpu_maps+0x118/0x1e8()
DT /cpu 9 nodes greater than max cores 8, capping them
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 3.19.0-00528-gbdccc4edeb03 #1
Hardware name: Hisilicon HiP04 (Flattened Device Tree)
[] (unwind_backtrace) from [] (show_stack+0x10/0x14)
[] (show_stack) from [] (dump_stack+0x78/0x94)
[] (dump_stack) from [] (warn_slowpath_common+0x74/0xb0)
[] (warn_slowpath_common) from [] (warn_slowpath_fmt+0x30/0x40)
[] (warn_slowpath_fmt) from [] (arm_dt_init_cpu_maps+0x118/0x1e8)
[] (arm_dt_init_cpu_maps) from [] (setup_arch+0x638/0x9a0)
[] (setup_arch) from [] (start_kernel+0x8c/0x3b4)
[] (start_kernel) from [<10208074>] (0x10208074)
---[ end trace cb88537fdc8fa200 ]---

[1] http://storage.kernelci.org/mainline/v3.19-528-gbdccc4edeb03/arm-multi_v7_defconfig/lab-tbaker/boot-hip04-d01.html

Cc: Olof Johansson <olof@lixom.net>
Cc: Kevin Hilman <khilman@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tyler Baker <tyler.baker@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-03-04 23:42:20 +01:00
Tyler Baker afc1ad7e55 ARM: sunxi_defconfig: increase the number of maximum number of CPUs to 8
The a80 optimus has 8 CPUs. I propose we increase the maximum number of CPUs to 8 to avoid the following warning identified during automated boot testing [1].

------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at ../arch/arm/kernel/devtree.c:144 arm_dt_init_cpu_maps+0x110/0x1e0()
DT /cpu 5 nodes greater than max cores 4, capping them
CPU: 0 PID: 0 Comm: swapper Not tainted 3.19.0-00528-gbdccc4edeb03 #1
Hardware name: Allwinner sun9i Family
[] (unwind_backtrace) from [] (show_stack+0x10/0x14)
[] (show_stack) from [] (dump_stack+0x74/0x90)
[] (dump_stack) from [] (warn_slowpath_common+0x70/0xac)
[] (warn_slowpath_common) from [] (warn_slowpath_fmt+0x30/0x40)
[] (warn_slowpath_fmt) from [] (arm_dt_init_cpu_maps+0x110/0x1e0)
[] (arm_dt_init_cpu_maps) from [] (setup_arch+0x634/0x8d4)
[] (setup_arch) from [] (start_kernel+0x88/0x3ac)
[] (start_kernel) from [<20008074>] (0x20008074)
---[ end trace cb88537fdc8fa200 ]---

[1] http://storage.kernelci.org/mainline/v3.19-528-gbdccc4edeb03/arm-sunxi_defconfig/lab-tbaker/boot-sun9i-a80-optimus.html

Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Kevin Hilman <khilman@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tyler Baker <tyler.baker@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-03-04 23:41:21 +01:00
Iyappan Subramanian 2a91eb72e6 dtb: change binding name to match with newer firmware DT
This patch fixes the backward compatibility of the older driver with the
newer firmware by making the binding unique so that the older driver won't
recognize the non-supported interfaces.

The new bindings are in sync with the newer firmware.

Signed-off-by: Iyappan Subramanian <isubramanian@apm.com>
Signed-off-by: Keyur Chudgar <kchudgar@apm.com>
Tested-by: Mark Langsdorf <mlangsdo@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-04 15:54:14 -05:00
Arnd Bergmann bc76161686 First fixes batch for AT91 on 4.0:
- PM slowclock fixes for DDR and timeouts
 - fix some DT entries
 - little defconfig updates
 - the removal of a harmful watchdog option + its detailed documentation
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Merge tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into fixes

Merge "First fixes batch for AT91 on 4.0" from Nicolas Ferre:

- PM slowclock fixes for DDR and timeouts
- fix some DT entries
- little defconfig updates
- the removal of a harmful watchdog option + its detailed documentation

* tag 'at91-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91:
  ARM: at91/dt: keep watchdog running in idle mode
  dts: Documentation: AT91 Watchdog, explain what atmel,idle-halt property really do
  ARM: at91/defconfig: add at91rm9200 ethernet support
  ARM: at91/defconfig: remove CONFIG_SYSFS_DEPRECATED
  ARM: at91/dt: at91sam9260: fix usart pinctrl
  ARM: at91/dt: sama5d4: add missing alias for i2c0
  ARM: at91/dt: at91sam9263: Fixup sram1 device tree node
  ARM: at91: pm: fix SRAM allocation
  ARM: at91: pm: fix at91rm9200 standby
  pm: at91: Workaround DDRSDRC self-refresh bug with LPDDR1 memories.
  pm: at91: pm_slowclock: fix suspend/resume hang up in timeouts
2015-03-04 21:14:47 +01:00
Arnd Bergmann 0be32d2f07 Merge tag 'samsung-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
Merge "Samsung fixes for v4.0" from Kukjin Kim:

* tag samsung-fixes-1:
  ARM: EXYNOS: Fix wrong hwirq of RTC interrupt for Exynos3250 SoC
  ARM: EXYNOS: Don't use LDREX and STREX after disabling cache coherency
2015-03-04 21:01:25 +01:00
Arnd Bergmann 3c02bfc4c0 Samsung tmu and hdmi regression fixes for v4.0
- The thermal management unit and HDMI (drm mixer driver) related
 reworks have been merged in v4.0 merge window. So if this DT changes
 are missed for v4.0, we regressions in v4.0 release for exynos
 platforms such as exynos5250, exynos5420, exynos4 SoCs.
 
 - Note since there was a dependency with driver side, this cannot
 be sent to upstream during preivous merge window and now it has been
 resolved.
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Merge tag 'samsung-fixes-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes

Merge "Samsung tmu and hdmi regression fixes for v4.0" from Kukjin Kim:

- The thermal management unit and HDMI (drm mixer driver) related
reworks have been merged in v4.0 merge window. So if this DT changes
are missed for v4.0, we regressions in v4.0 release for exynos
platforms such as exynos5250, exynos5420, exynos4 SoCs.

- Note since there was a dependency with driver side, this cannot
be sent to upstream during preivous merge window and now it has been
resolved.

* tag 'samsung-fixes-dt' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: dts: add display power domain for exynos5250
  ARM: dts: add 'hdmi' clock to mixer nodes for exynos5250 and exynos5420
  ARM: dts: enable hdmi support for exynos4210-universal_c210
  ARM: dts: enable hdmi support for exynos4412-odroid-common
  ARM: dts: add dependency between TV and LCD0 power domains for exynos4
  ARM: dts: add hdmi related nodes for exynos4 SoCs
  ARM: EXYNOS: add support for sub-power domains
  dt-bindings: document a note about power domain subdomains
  ARM: dts: Provide dt bindings identical for Exynos TMU
  ARM: dts: Trip points and sensor configuration data for exynos5440
  ARM: dts: define default thermal-zones for exynos4
  ARM: dts: default trip points definition for exynos5420
  ARM: dts: add TMU default definitions for exynos4412
  ARM: dts: Adding CPU cooling binding for Exynos SoCs
  ARM: dts: Enable TMU for exynos4412-odriod-common
  ARM: dts: Add LDO10 for TMU for exynos4412-odroid-common
  ARM: dts: Enable TMU for exynos4210-trats
2015-03-04 20:59:03 +01:00
Russell King cee9b8d6b8 ARM: socfpga: make sure socfpga_cpu1start_addr is properly flushed
Make sure socfpga_cpu1start_addr is properly flushed from it's cache line so
that secondary cpu's can see it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
2015-03-04 13:03:17 -06:00
Steffen Trumtrar 78c03c7af8 ARM: socfpga: fix uart DMA binding error
socfpga.dtsi is missing the DMA channels for the uart nodes.
This will produce the following errors:

	of_dma_request_slave_channel: dma-names property of node '/soc/serial0@ffc02000' missing or empty
	ttyS0 - failed to request DMA

Provide the correct DMA channels to fix this.

Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
2015-03-04 13:03:04 -06:00
Vince Bridgers de04261d5a ARM: socfpga: Correct SCU virtual mapping in socfpga
Correct SCU virtual mapping that was causing this BUG message:

"BUG: mapping for 0xfffec000 at 0xfffec000 out of vmalloc space"

Signed-off-by: Vince Bridgers <vbridger@opensource.altera.com>
Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
2015-03-04 13:03:01 -06:00
Linus Torvalds b8e81a3b68 Merge git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Marcelo Tosatti:
 "KVM bug fixes, including a SVM interrupt injection regression fix,
  MIPS and ARM bug fixes"

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: MIPS: Enable after disabling interrupt
  KVM: MIPS: Fix trace event to save PC directly
  KVM: SVM: fix interrupt injection (apic->isr_count always 0)
  KVM: emulate: fix CMPXCHG8B on 32-bit hosts
  KVM: VMX: fix build without CONFIG_SMP
  arm/arm64: KVM: Add exit reaons to kvm_exit event tracing
  ARM: KVM: Fix size check in __coherent_cache_guest_page
2015-03-04 09:54:10 -08:00
Linus Torvalds f2cb4777f6 * Fix for /proc/<pid>/maps "stack" vma annotation
* sched stats not printing correct sleeping task PC
 * perf not reporting page faults
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Merge tag 'arc-4.0-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:
 - Fix for /proc/<pid>/maps "stack" vma annotation
 - sched stats not printing correct sleeping task PC
 - perf not reporting page faults

* tag 'arc-4.0-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: Fix thread_saved_pc()
  ARC: Fix KSTK_ESP()
  ARC: perf: Enable generic software events
  ARC: Make arc_unwind_core accessible externally
2015-03-04 09:27:22 -08:00
Linus Torvalds 97754e3c5a powerpc fixes for 4.0
- Fix for dynticks.
 - Fix for smpboot bug.
 - Fix for IOMMU group refcounting.
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Merge tag 'powerpc-4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux

Pull powerpc fixes from Michael Ellerman:
 - Fix for dynticks.
 - Fix for smpboot bug.
 - Fix for IOMMU group refcounting.

* tag 'powerpc-4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux:
  powerpc/iommu: Remove IOMMU device references via bus notifier
  powerpc/smp: Wait until secondaries are active & online
  powerpc: Re-enable dynticks
2015-03-04 09:22:46 -08:00
Jamie Garside c2219eda54 microblaze: Fix syscall error recovery for invalid syscall IDs
This patch fixes two bugs in the Microblaze syscall trap handler when an invalid
syscall ID is used.

First, the range check on line 351 only checks for syscall IDs greater than
__NR_syscalls. A negative syscall ID (either passed to `syscall()` or as returned
by `do_syscall_trace_enter()` on error) will still satisfy this test and cause
the Linux kernel to access an invalid memory location and cause a kernel oops.
This has been fixed by also checking for r12 < 0.

Secondly, the current error recovery at line 378 returns using the wrong register
(r15 instead of r14) and does not restore the previous stack state. This has been
fixed by invoking `ret_from_trap` on error, setting r3 to `-ENOSYS`, similar to
what would happen when calling a valid syscall.

Signed-off-by: Jamie Garside <jamie.garside@york.ac.uk>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-03-04 15:12:27 +01:00
Michal Simek 074fa7e76c microblaze: Coding style cleanup
No function change.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2015-03-04 15:11:55 +01:00
Jiang Liu 63f1789ec7 x86/PCI/ACPI: Ignore resources consumed by host bridge itself
When parsing resources for PCI host bridge, we should ignore resources
consumed by host bridge itself and only report window resources available
to child PCI busses.

Fixes: 593669c2ac (x86/PCI/ACPI: Use common ACPI resource interfaces ...)
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-03-04 14:09:44 +01:00
Michel Marti 2141102e04 ARM: at91/dt: keep watchdog running in idle mode
Since turning on idle-halt in commit fe46aa679f (ARM: at91/dt: add
sam9 watchdog default options to SoCs), SoCs compatible with at91sam9260-wdt
no longer reboot if the watchdog times out while the CPU is in idle state.
Removing the 'idle-halt' flag that was set by default fixes this.

Signed-off-by: Michel Marti <mma@objectxp.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
[nicolas.ferre@atmel.com: rework the commit message]
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-04 11:20:52 +01:00
Michael Mueller fb5bf93f84 KVM: s390: non-LPAR case obsolete during facilities mask init
With patch "include guest facilities in kvm facility test" it is no
longer necessary to have special handling for the non-LPAR case.

Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-04 10:33:25 +01:00
Michael Mueller 981467c930 KVM: s390: include guest facilities in kvm facility test
Most facility related decisions in KVM have to take into account:

- the facilities offered by the underlying run container (LPAR/VM)
- the facilities supported by the KVM code itself
- the facilities requested by a guest VM

This patch adds the KVM driver requested facilities to the test routine.

It additionally renames struct s390_model_fac to kvm_s390_fac and its field
names to be more meaningful.

The semantics of the facilities stored in the KVM architecture structure
is changed. The address arch.model.fac->list now points to the guest
facility list and arch.model.fac->mask points to the KVM facility mask.

This patch fixes the behaviour of KVM for some facilities for guests
that ignore the guest visible facility bits, e.g. guests could use
transactional memory intructions on hosts supporting them even if the
chosen cpu model would not offer them.

The userspace interface is not affected by this change.

Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-04 10:33:25 +01:00
Michael Mueller 94422ee880 KVM: s390: fix in memory copy of facility lists
The facility lists were not fully copied.

Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-04 10:33:24 +01:00
Alexandre Belloni efff4b1a5a ARM: at91/defconfig: add at91rm9200 ethernet support
There is now only one defconfig for the at91rm9200 and at91sam9. Add ethernet
support for the at91rm9200.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-04 10:31:07 +01:00
Anthony Harivel a8eef13a83 ARM: at91/defconfig: remove CONFIG_SYSFS_DEPRECATED
Recent distributions and userspace tools after 2009/2010 depend on
the existence of /sys/class/block/, and will not work with this option enabled.

Signed-off-by: Anthony Harivel <anthony.harivel@emtrion.de>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-04 10:31:06 +01:00
Jonas Andersson a009d69208 ARM: at91/dt: at91sam9260: fix usart pinctrl
Corrected pins used by usart3.

Signed-off-by: Jonas Andersson <jonas@microbit.se>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-04 10:31:06 +01:00
Christian Borntraeger 86044c8c14 KVM: s390/cpacf: Fix kernel bug under z/VM
Under z/VM PQAP might trigger an operation exception if no crypto cards
are defined via APVIRTUAL or APDEDICATED.

[  386.098666] Kernel BUG at 0000000000135c56 [verbose debug info unavailable]
[  386.098693] illegal operation: 0001 ilc:2 [#1] SMP
[...]
[  386.098751] Krnl PSW : 0704c00180000000 0000000000135c56 (kvm_s390_apxa_installed+0x46/0x98)
[...]
[  386.098804]  [<000000000013627c>] kvm_arch_init_vm+0x29c/0x358
[  386.098806]  [<000000000012d008>] kvm_dev_ioctl+0xc0/0x460
[  386.098809]  [<00000000002c639a>] do_vfs_ioctl+0x332/0x508
[  386.098811]  [<00000000002c660e>] SyS_ioctl+0x9e/0xb0
[  386.098814]  [<000000000070476a>] system_call+0xd6/0x258
[  386.098815]  [<000003fffc7400a2>] 0x3fffc7400a2

Lets add an extable entry and provide a zeroed config in that case.

Reported-by: Stefan Zimmermann <stzi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Tested-by: Stefan Zimmermann <stzi@linux.vnet.ibm.com>
2015-03-04 10:29:55 +01:00
Nishanth Aravamudan 4ad04e5987 powerpc/iommu: Remove IOMMU device references via bus notifier
After d905c5df9a ("PPC: POWERNV: move iommu_add_device earlier"), the
refcnt on the kobject backing the IOMMU group for a PCI device is
elevated by each call to pci_dma_dev_setup_pSeriesLP() (via
set_iommu_table_base_and_group). When we go to dlpar a multi-function
PCI device out:

        iommu_reconfig_notifier ->
                iommu_free_table ->
                        iommu_group_put
                        BUG_ON(tbl->it_group)

We trip this BUG_ON, because there are still references on the table, so
it is not freed. Fix this by moving the powernv bus notifier to common
code and calling it for both powernv and pseries.

Fixes: d905c5df9a ("PPC: POWERNV: move iommu_add_device earlier")
Signed-off-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Tested-by: Nishanth Aravamudan <nacc@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-03-04 13:19:33 +11:00
Michael Ellerman 875ebe940d powerpc/smp: Wait until secondaries are active & online
Anton has a busy ppc64le KVM box where guests sometimes hit the infamous
"kernel BUG at kernel/smpboot.c:134!" issue during boot:

  BUG_ON(td->cpu != smp_processor_id());

Basically a per CPU hotplug thread scheduled on the wrong CPU. The oops
output confirms it:

  CPU: 0
  Comm: watchdog/130

The problem is that we aren't ensuring the CPU active bit is set for the
secondary before allowing the master to continue on. The master unparks
the secondary CPU's kthreads and the scheduler looks for a CPU to run
on. It calls select_task_rq() and realises the suggested CPU is not in
the cpus_allowed mask. It then ends up in select_fallback_rq(), and
since the active bit isnt't set we choose some other CPU to run on.

This seems to have been introduced by 6acbfb9697 "sched: Fix hotplug
vs. set_cpus_allowed_ptr()", which changed from setting active before
online to setting active after online. However that was in turn fixing a
bug where other code assumed an active CPU was also online, so we can't
just revert that fix.

The simplest fix is just to spin waiting for both active & online to be
set. We already have a barrier prior to set_cpu_online() (which also
sets active), to ensure all other setup is completed before online &
active are set.

Fixes: 6acbfb9697 ("sched: Fix hotplug vs. set_cpus_allowed_ptr()")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-03-04 13:19:33 +11:00
Linus Torvalds 789d7f60cd Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) If an IPVS tunnel is created with a mixed-family destination
    address, it cannot be removed.  Fix from Alexey Andriyanov.

 2) Fix module refcount underflow in netfilter's nft_compat, from Pablo
    Neira Ayuso.

 3) Generic statistics infrastructure can reference variables sitting on
    a released function stack, therefore use dynamic allocation always.
    Fix from Ignacy Gawędzki.

 4) skb_copy_bits() return value test is inverted in ip_check_defrag().

 5) Fix network namespace exit in openvswitch, we have to release all of
    the per-net vports.  From Pravin B Shelar.

 6) Fix signedness bug in CAIF's cfpkt_iterate(), from Dan Carpenter.

 7) Fix rhashtable grow/shrink behavior, only expand during inserts and
    shrink during deletes.  From Daniel Borkmann.

 8) Netdevice names with semicolons should never be allowed, because
    they serve as a separator.  From Matthew Thode.

 9) Use {,__}set_current_state() where appropriate, from Fabian
    Frederick.

10) Revert byte queue limits support in r8169 driver, it's causing
    regressions we can't figure out.

11) tcp_should_expand_sndbuf() erroneously uses tp->packets_out to
    measure packets in flight, properly use tcp_packets_in_flight()
    instead.  From Neal Cardwell.

12) Fix accidental removal of support for bluetooth in CSR based Intel
    wireless cards.  From Marcel Holtmann.

13) We accidently added a behavioral change between native and compat
    tasks, wrt testing the MSG_CMSG_COMPAT bit.  Just ignore it if the
    user happened to set it in a native binary as that was always the
    behavior we had.  From Catalin Marinas.

14) Check genlmsg_unicast() return valud in hwsim netlink tx frame
    handling, from Bob Copeland.

15) Fix stale ->radar_required setting in mac80211 that can prevent
    starting new scans, from Eliad Peller.

16) Fix memory leak in nl80211 monitor, from Johannes Berg.

17) Fix race in TX index handling in xen-netback, from David Vrabel.

18) Don't enable interrupts in amx-xgbe driver until all software et al.
    state is ready for the interrupt handler to run.  From Thomas
    Lendacky.

19) Add missing netlink_ns_capable() checks to rtnl_newlink(), from Eric
    W Biederman.

20) The amount of header space needed in macvtap was not calculated
    properly, fix it otherwise we splat past the beginning of the
    packet.  From Eric Dumazet.

21) Fix bcmgenet TCP TX perf regression, from Jaedon Shin.

22) Don't raw initialize or mod timers, use setup_timer() and
    mod_timer() instead.  From Vaishali Thakkar.

23) Fix software maintained statistics in bcmgenet and systemport
    drivers, from Florian Fainelli.

24) DMA descriptor updates in sh_eth need proper memory barriers, from
    Ben Hutchings.

25) Don't do UDP Fragmentation Offload on RAW sockets, from Michal
    Kubecek.

26) Openvswitch's non-masked set actions aren't constructed properly
    into netlink messages, fix from Joe Stringer.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (116 commits)
  openvswitch: Fix serialization of non-masked set actions.
  gianfar: Reduce logging noise seen due to phy polling if link is down
  ibmveth: Add function to enable live MAC address changes
  net: bridge: add compile-time assert for cb struct size
  udp: only allow UFO for packets from SOCK_DGRAM sockets
  sh_eth: Really fix padding of short frames on TX
  Revert "sh_eth: Enable Rx descriptor word 0 shift for r8a7790"
  sh_eth: Fix RX recovery on R-Car in case of RX ring underrun
  sh_eth: Ensure proper ordering of descriptor active bit write/read
  net/mlx4_en: Disbale GRO for incoming loopback/selftest packets
  net/mlx4_core: Fix wrong mask and error flow for the update-qp command
  net: systemport: fix software maintained statistics
  net: bcmgenet: fix software maintained statistics
  rxrpc: don't multiply with HZ twice
  rxrpc: terminate retrans loop when sending of skb fails
  net/hsr: Fix NULL pointer dereference and refcnt bugs when deleting a HSR interface.
  net: pasemi: Use setup_timer and mod_timer
  net: stmmac: Use setup_timer and mod_timer
  net: 8390: axnet_cs: Use setup_timer and mod_timer
  net: 8390: pcnet_cs: Use setup_timer and mod_timer
  ...
2015-03-03 15:30:07 -08:00
Rob Gardner 53eb251697 sparc: semtimedop() unreachable due to comparison error
A bug was reported that the semtimedop() system call was always
failing eith ENOSYS.

Since SEMCTL is defined as 3, and SEMTIMEDOP is defined as 4,
the comparison "call <= SEMCTL" will always prevent SEMTIMEDOP
from getting through to the semaphore ops switch statement.

This is corrected by changing the comparison to "call <= SEMTIMEDOP".

Orabug: 20633375

Signed-off-by: Rob Gardner <rob.gardner@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-03 14:05:48 -08:00
Nicolas Ferre a547f60ac8 ARM: at91/dt: sama5d4: add missing alias for i2c0
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-03 20:07:15 +01:00
Alexander Stein 940e766a8e ARM: at91/dt: at91sam9263: Fixup sram1 device tree node
Commit ff04660e48b20 ("ARM: at91/dt: add SRAM nodes") used the same base
address for sram0 and sram1 leading to the following warning:
WARNING: CPU: 0 PID: 1 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x50/0x70()
sysfs: cannot create duplicate filename '/devices/platform/300000.sram'
Fix the base address for sram1.

Signed-off-by: Alexander Stein <alexanders83@web.de>
Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-03 20:07:14 +01:00
Alexandre Belloni 4a031f7dbe ARM: at91: pm: fix SRAM allocation
On some platforms, there are multiple SRAM nodes defined in the device tree but
some of them are disabled, leading to allocation failure. Try to find the first
enabled SRAM node and allocate from it.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Tested-by: Wenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-03 20:07:13 +01:00
Alexandre Belloni 84e871660b ARM: at91: pm: fix at91rm9200 standby
at91rm9200 standby and suspend to ram has been broken since
00482a4078. It is wrongly using AT91_BASE_SYS which is a physical address
and actually doesn't correspond to any register on at91rm9200.

Use the correct at91_ramc_base[0] instead.

Fixes: 00482a4078 (ARM: at91: implement the standby function for pm/cpuidle)

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-03 20:07:13 +01:00
Peter Rosin 02f513a097 pm: at91: Workaround DDRSDRC self-refresh bug with LPDDR1 memories.
The DDRSDR controller fails miserably to put LPDDR1 memories in
self-refresh. Force the controller to think it has DDR2 memories
during the self-refresh period, as the DDR2 self-refresh spec is
equivalent to LPDDR1, and is correctly implemented in the
controller.

Assume that the second controller has the same fault, but that is
untested.

Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-03 19:43:59 +01:00
Sylvain Rochet ad4a38d218 pm: at91: pm_slowclock: fix suspend/resume hang up in timeouts
Removed timeout on XTAL, PLL lock and Master Clock Ready, hang if
something went wrong instead of continuing in unknown condition. There
is not much we can do if a PLL lock never ends, we are running in SRAM
and we will not be able to connect back the sdram or ddram in order to
be able to fire up a message or just panic.

As a bonus, not decounting the timeout register in slow clock mode
reduce cumulated suspend time and resume time from ~17ms to ~15ms.

Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Acked-by: Wenyou.Yang <wenyou.yang@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2015-03-03 19:43:59 +01:00
Tony Krowiak ed6f76b464 KVM: s390/cpacf: Enable key wrapping by default
z/VM and LPAR enable key wrapping by default, lets do the same on KVM.

Signed-off-by: Tony Krowiak <akrowiak@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
2015-03-03 12:08:13 +01:00
Tapasweni Pathak cfec0e75f5 KVM: MIPS: Enable after disabling interrupt
Enable disabled interrupt, on unsuccessful operation.

Found by Coccinelle.

Signed-off-by: Tapasweni Pathak <tapaswenipathak@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-02 19:18:12 -03:00
James Hogan b3cffac04e KVM: MIPS: Fix trace event to save PC directly
Currently the guest exit trace event saves the VCPU pointer to the
structure, and the guest PC is retrieved by dereferencing it when the
event is printed rather than directly from the trace record. This isn't
safe as the printing may occur long afterwards, after the PC has changed
and potentially after the VCPU has been freed. Usually this results in
the same (wrong) PC being printed for multiple trace events. It also
isn't portable as userland has no way to access the VCPU data structure
when interpreting the trace record itself.

Lets save the actual PC in the structure so that the correct value is
accessible later.

Fixes: 669e846e6c ("KVM/MIPS32: MIPS arch specific APIs for KVM")
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-mips@linux-mips.org
Cc: kvm@vger.kernel.org
Cc: <stable@vger.kernel.org> # v3.10+
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-02 19:17:52 -03:00
Radim Krčmář f563db4bdb KVM: SVM: fix interrupt injection (apic->isr_count always 0)
In commit b4eef9b36d, we started to use hwapic_isr_update() != NULL
instead of kvm_apic_vid_enabled(vcpu->kvm).  This didn't work because
SVM had it defined and "apicv" path in apic_{set,clear}_isr() does not
change apic->isr_count, because it should always be 1.  The initial
value of apic->isr_count was based on kvm_apic_vid_enabled(vcpu->kvm),
which is always 0 for SVM, so KVM could have injected interrupts when it
shouldn't.

Fix it by implicitly setting SVM's hwapic_isr_update to NULL and make the
initial isr_count depend on hwapic_isr_update() for good measure.

Fixes: b4eef9b36d ("kvm: x86: vmx: NULL out hwapic_isr_update() in case of !enable_apicv")
Reported-and-tested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-02 19:04:40 -03:00
Linus Torvalds 49db1f0ef2 arch/metag fixes for v4.0
This is just a single patch to fix the KSTK_EIP() and KSTK_ESP() macros
 for metag which have always been erronously returning the PC and stack
 pointer of the task's kernel context rather than from its user context
 saved at entry from userland into the kernel, which affects the contents
 of /proc/<pid>/maps and /proc/<pid>/stat.
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Merge tag 'metag-fixes-v4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag

Pull arch/metag fix from James Hogan:
 "This is just a single patch to fix the KSTK_EIP() and KSTK_ESP()
  macros for metag which have always been erronously returning the PC
  and stack pointer of the task's kernel context rather than from its
  user context saved at entry from userland into the kernel, which
  affects the contents of /proc/<pid>/maps and /proc/<pid>/stat"

* tag 'metag-fixes-v4.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
  metag: Fix KSTK_EIP() and KSTK_ESP() macros
2015-03-02 14:02:17 -08:00
Martin Schwidefsky 691d526415 s390/mm: fix incorrect ASCE after crst_table_downgrade
The switch_mm function does nothing in case the prev and next mm
are the same. It can happen that a crst_table_downgrade has changed
the top-level pgd in the meantime on a different CPU. Always store
the new ASCE to be picked up in entry.S.

[heiko.carstens@de.ibm.com]: Bug was introduced with git commit
53e857f308 ("s390/mm,tlb: race of lazy TLB flush vs. recreation
of TLB entries") and causes random crashes due to broken page tables
being used.

Reported-by: Dominik Vogt <vogt@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2015-03-02 11:35:57 -08:00
Heiko Carstens a9ca8eb7af s390/ftrace: fix crashes when switching tracers / add notrace to cpu_relax()
With git commit 4d92f50249 ("s390: reintroduce diag 44 calls for
cpu_relax()") I reintroduced a non-trivial cpu_relax() variant on s390.

The difference to the previous variant however is that the new version is
an out-of-line function, which will be traced if function tracing is enabled.

Switching to different tracers includes instruction patching. Therefore this
is done within stop_machine() "context" to prevent that any function tracing
is going on while instructions are being patched.
With the new out-of-line variant of cpu_relax() this is not true anymore,
since cpu_relax() gets called in a busy loop by all waiting cpus within
stop_machine() until function patching is finished.
Therefore cpu_relax() must be marked notrace.

This fixes kernel crashes when frequently switching between "function" and
"function_graph" tracers.

Moving cpu_relax() to a header file again, doesn't work because of header
include order dependencies.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-03-02 11:35:53 -08:00
Arnaldo Carvalho de Melo 33be4ef116 Merge 'tip/perf/urgent' into perf/core to pick fixes
Needed to build perf/core buildable in some cases.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-03-02 11:45:49 -03:00
Ard Biesheuvel 001eabfd54 crypto: arm/aes update NEON AES module to latest OpenSSL version
This updates the bit sliced AES module to the latest version in the
upstream OpenSSL repository (e620e5ae37bc). This is needed to fix a
bug in the XTS decryption path, where data chunked in a certain way
could trigger the ciphertext stealing code, which is not supposed to
be active in the kernel build (The kernel implementation of XTS only
supports round multiples of the AES block size of 16 bytes, whereas
the conformant OpenSSL implementation of XTS supports inputs of
arbitrary size by applying ciphertext stealing). This is fixed in
the upstream version by adding the missing #ifndef XTS_CHAIN_TWEAK
around the offending instructions.

The upstream code also contains the change applied by Russell to
build the code unconditionally, i.e., even if __LINUX_ARM_ARCH__ < 7,
but implemented slightly differently.

Cc: stable@vger.kernel.org
Fixes: e4e7f10bfc ("ARM: add support for bit sliced AES using NEON instructions")
Reported-by: Adrian Kotelba <adrian.kotelba@gmail.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Milan Broz <gmazyland@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2015-03-02 23:18:26 +13:00
Ricardo Ribalda 9555b47fab sparc: io_64.h: Replace io function-link macros
Function like macros cannot be assigned to function pointers. This patch
convert the function-like macros into object-macros, that the
precompiler will replace with the name of the final function.

With this patch this kind of code will work:

if (priv->mode_big_endian)
	priv.read = ioread32be;
else
	priv.read = ioread32;

Same approach has been taken on asm-generic/io.h

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 99082eab63 spi/xilinx: Remove iowrite/ioread wrappers
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-01 21:48:22 -08:00
Dave Kleikamp 94ab599076 sparc64: fatal trap should stop all cpus
"echo c > /proc/sysrq-trigger" does not result in a system crash. There
are two problems. One is that the trap handler ignores the global
variable, panic_on_oops. The other is that smp_send_stop() is a no-op
which leaves the other cpus running normally when one cpu panics.

Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-01 21:42:57 -08:00
Rickard Strandqvist 8f765b8491 arch: sparc: kernel: starfire.c: Remove unused function
Remove the function starfire_hard_smp_processor_id() that is not used anywhere.

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-01 21:33:58 -08:00
Rickard Strandqvist cb26285df1 arch: sparc: kernel: traps_64.c: Remove some unused functions
Removes some functions that are not used anywhere:
do_fpdis_tl1() do_iae_tl1() do_dae_tl1() do_cee_tl1()

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-01 21:33:58 -08:00
Tero Kristo 50f59d07e9 ARM: OMAP4+: PRM: fix omap4 version of prm_save_and_clear_irqen
This was incorrectly reading the irq status registers during the save
and clear, instead of the irq enable. This worked because there is only
one user for the prcm interrupts currently, namely the io-chain. Whenever
the function was called, an io-chain interrupt was both pending and
enabled.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2015-03-01 16:58:25 -07:00
Tero Kristo 80d2518dfd ARM: OMAP2+: hwmod: fix deassert hardreset clkdm usecounting
Deasserting hardreset increases the usecount for the hwmod parent clockdomain
always, however usecount is only decreased at end in certain error cases.
This causes software supervised clockdomains to remain always on, preventing
idle. Fixed by always releasing the hwmods clockdomain parent when exiting
the function.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Tested-by: Carlos Hernandez <ceh@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2015-03-01 16:24:04 -07:00
Linus Torvalds a38ecbbd0b Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "A CR4-shadow 32-bit init fix, plus two typo fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Init per-cpu shadow copy of CR4 on 32-bit CPUs too
  x86/platform/intel-mid: Fix trivial printk message typo in intel_mid_arch_setup()
  x86/cpu/intel: Fix trivial typo in intel_tlb_table[]
2015-03-01 12:22:44 -08:00
Linus Torvalds 640c0f5c57 Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Ingo Molnar:
 "Three clockevents/clocksource driver fixes"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource: pxa: Fix section mismatch
  clocksource: mtk: Fix race conditions in probe code
  clockevents: asm9260: Fix compilation error with sparc/sparc64 allyesconfig
2015-03-01 12:00:25 -08:00
Linus Torvalds d7b48fec35 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "Two kprobes fixes and a handful of tooling fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tools: Make sparc64 arch point to sparc
  perf symbols: Define EM_AARCH64 for older OSes
  perf top: Fix SIGBUS on sparc64
  perf tools: Fix probing for PERF_FLAG_FD_CLOEXEC flag
  perf tools: Fix pthread_attr_setaffinity_np build error
  perf tools: Define _GNU_SOURCE on pthread_attr_setaffinity_np feature check
  perf bench: Fix order of arguments to memcpy_alloc_mem
  kprobes/x86: Check for invalid ftrace location in __recover_probed_insn()
  kprobes/x86: Use 5-byte NOP when the code might be modified by ftrace
2015-03-01 11:56:13 -08:00
Linus Torvalds e9738946fc Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
 "13 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  mm: add missing __PAGETABLE_{PUD,PMD}_FOLDED defines
  mm: page_alloc: revert inadvertent !__GFP_FS retry behavior change
  kernel/sys.c: fix UNAME26 for 4.0
  mm: memcontrol: use "max" instead of "infinity" in control knobs
  zram: use proper type to update max_used_pages
  drivers/rtc/rtc-ds1685.c: fix conditional in ds1685_rtc_sysfs_time_regs_{show,store}
  nilfs2: fix potential memory overrun on inode
  scripts/gdb: add empty package initialization script
  rtc: ds1685: remove superfluous checks for out-of-range u8 values
  rtc: ds1685: fix ds1685_rtc_alarm_irq_enable build error
  memcg: fix low limit calculation
  mm/nommu: fix memory leak
  ocfs2: update web page + git tree in documentation
2015-02-28 09:58:03 -08:00
Kirill A. Shutemov c07af4f1ce mm: add missing __PAGETABLE_{PUD,PMD}_FOLDED defines
Core mm expects __PAGETABLE_{PUD,PMD}_FOLDED to be defined if these page
table levels folded.  Usually, these defines are provided by
<asm-generic/pgtable-nopmd.h> and <asm-generic/pgtable-nopud.h>.

But some architectures fold page table levels in a custom way.  They
need to define these macros themself.  This patch adds missing defines.

The patch fixes mm->nr_pmds underflow and eliminates dead __pmd_alloc()
and __pud_alloc() on architectures without these page table levels.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: David Howells <dhowells@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <jejb@parisc-linux.org>
Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-02-28 09:57:51 -08:00
Arnd Bergmann b70661c708 net: smc91x: use run-time configuration on all ARM machines
The smc91x driver traditionally gets configured at compile-time
for whichever hardware it runs on. This no longer works on
ARM as we continue to move to building all-in-one kernels.

Most ARM configurations with this driver already use run-time
configuration through DT or through platform_data, but a
few have not been converted yet.

I've checked all ARM boards that use this driver in their
legacy board files, and converted the ones that were using
compile-time configuration in smc91x.h to behave like the
other ones and provide the interrupt polarity along with
the MMIO configuration (width, stride) at platform device
creation time.

In particular, these combinations were previously selectable
in Kconfig but in fact broken:

- sa1100 assabet plus pleb
- msm combined with any other armv6/v7 platform
- pxa-idp combined with any non-DMA pxa variant
- LogicPD PXA270 combined with any other pxa
- nomadik combined with any other armv4/v5 platform,
  e.g. versatile.

None of these seem critical enough to warrant a backport
to stable, but it would be nice to clean this up for good.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
----
I would like the patch to get merged through netdev, after
Robert and/or Linus have verified it on at least some hardware.

There are a few other non-ARM platforms using this driver,
I could do the same patch for those if we want to take
it further.

 arch/arm/mach-msm/board-halibut.c    |   8 ++++-
 arch/arm/mach-msm/board-qsd8x50.c    |   8 ++++-
 arch/arm/mach-pxa/idp.c              |   5 +++
 arch/arm/mach-pxa/lpd270.c           |   8 ++++-
 arch/arm/mach-realview/core.c        |   7 ++++
 arch/arm/mach-realview/realview_eb.c |   2 +-
 arch/arm/mach-sa1100/neponset.c      |   6 ++++
 arch/arm/mach-sa1100/pleb.c          |   7 ++++
 drivers/net/ethernet/smsc/smc91x.c   |   9 +++--
 drivers/net/ethernet/smsc/smc91x.h   | 114 ++----------------------------------------------------------
 10 files changed, 57 insertions(+), 117 deletions(-)
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-02-28 12:56:56 -05:00
Steven Rostedt 5b2bdbc845 x86: Init per-cpu shadow copy of CR4 on 32-bit CPUs too
Commit:

   1e02ce4ccc ("x86: Store a per-cpu shadow copy of CR4")

added a shadow CR4 such that reads and writes that do not
modify the CR4 execute much faster than always reading the
register itself.

The change modified cpu_init() in common.c, so that the
shadow CR4 gets initialized before anything uses it.

Unfortunately, there's two cpu_init()s in common.c. There's
one for 64-bit and one for 32-bit. The commit only added
the shadow init to the 64-bit path, but the 32-bit path
needs the init too.

Link: http://lkml.kernel.org/r/20150227125208.71c36402@gandalf.local.home Fixes: 1e02ce4ccc "x86: Store a per-cpu shadow copy of CR4"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Andy Lutomirski <luto@amacapital.net>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/20150227145019.2bdd4354@gandalf.local.home
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-28 08:04:20 +01:00
Ingo Molnar 5838d18955 Merge branch 'linus' into x86/urgent, to merge dependent patch
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-28 08:03:10 +01:00
Linus Torvalds 895c8b7b46 ARM: SoC fixes for 3.20-rc1
The arm-soc bug fixes this time around are mostly for the omap
 platform, coming from a pull request from Tony Lindgren and are
 almost entirely fixing dts files.
 
 The other two changes enable support for the shmobile platform
 in generic armv7 kernels and change some properties in the
 ARM64 reference board dts files.
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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:
 "The arm-soc bug fixes this time around are mostly for the omap
  platform, coming from a pull request from Tony Lindgren and are almost
  entirely fixing dts files.

  The other two changes enable support for the shmobile platform in
  generic armv7 kernels and change some properties in the ARM64
  reference board dts files"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: multi_v7_defconfig: Enable shmobile platforms
  arm64: Add L2 cache topology to ARM Ltd boards/models
  ARM: dts: am335x-bone*: usb0 is hardwired for peripheral
  ARM: dts: dra7x-evm: beagle-x15: Fix USB Host
  ARM: omap2plus_defconfig: Fix SATA boot
  ARM: omap2plus_defconfig: Enable OMAP NAND BCH driver
  ARM: dts: dra7: Correct the dma controller's property names
  ARM: dts: omap5: Correct the dma controller's property names
  ARM: dts: omap4: Correct the dma controller's property names
  ARM: dts: omap3: Correct the dma controller's property names
  ARM: dts: omap2: Correct the dma controller's property names
  ARM: dts: am437x-idk: fix sleep pinctrl state
  ARM: omap2plus_defconfig: enable TPS62362 regulator
  ARM: dts: am437x-idk: fix TPS62362 i2c bus
  ARM: dts: n900: Fix offset for smc91x ethernet
  ARM: dts: n900: fix i2c bus numbering
  ARM: dts: Fix USB dts configuration for dm816x
  ARM: dts: OMAP5: Fix SATA PHY node
  ARM: dts: DRA7: Fix SATA PHY node
2015-02-27 16:18:33 -08:00
Linus Torvalds 8d20a3dd4a Various arm64 fixes:
- ftrace branch generation fix
 - branch instruction encoding fix
 - include files, guards and unused prototypes clean-up
 - minor VDSO ABI fix (clock_getres)
 - PSCI functions moved to .S to avoid compilation error with gcc 5
 - pte_modify fix to not ignore the mapping type
 - crypto: AES interleaved increased to 4x (for performance reasons)
 - text patching fix for modules
 - swiotlb increased back to 64MB
 - copy_siginfo_to_user32() fix for big endian
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:
 "Various arm64 fixes:
   - ftrace branch generation fix
   - branch instruction encoding fix
   - include files, guards and unused prototypes clean-up
   - minor VDSO ABI fix (clock_getres)
   - PSCI functions moved to .S to avoid compilation error with gcc 5
   - pte_modify fix to not ignore the mapping type
   - crypto: AES interleaved increased to 4x (for performance reasons)
   - text patching fix for modules
   - swiotlb increased back to 64MB
   - copy_siginfo_to_user32() fix for big endian"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: cpuidle: add asm/proc-fns.h inclusion
  arm64: compat Fix siginfo_t -> compat_siginfo_t conversion on big endian
  arm64: Increase the swiotlb buffer size 64MB
  arm64: Fix text patching logic when using fixmap
  arm64: crypto: increase AES interleave to 4x
  arm64: enable PTE type bit in the mask for pte_modify
  arm64: mm: remove unused functions and variable protoypes
  arm64: psci: move psci firmware calls out of line
  arm64: vdso: minor ABI fix for clock_getres
  arm64: guard asm/assembler.h against multiple inclusions
  arm64: insn: fix compare-and-branch encodings
  arm64: ftrace: fix ftrace_modify_graph_caller for branch replace
2015-02-27 16:09:37 -08:00
Lorenzo Pieralisi af4819af8d arm64: cpuidle: add asm/proc-fns.h inclusion
ARM64 CPUidle driver requires the cpu_do_idle function so that it can
be used to enter the shallowest idle state, and it is declared in
asm/proc-fns.h.

The current ARM64 CPUidle driver does not include asm/proc-fns.h
explicitly and it has so far relied on implicit inclusion from other
header files.

Owing to some header dependencies reshuffling this currently triggers
build failures when CONFIG_ARM64_64K_PAGES=y:

drivers/cpuidle/cpuidle-arm64.c: In function "arm64_enter_idle_state"
drivers/cpuidle/cpuidle-arm64.c:42:3: error: implicit declaration of
function "cpu_do_idle" [-Werror=implicit-function-declaration]
   cpu_do_idle();
   ^

This patch adds the explicit inclusion of the asm/proc-fns.h header file
in the arm64 asm/cpuidle.h header file, so that the build breakage is fixed
and the required header inclusion is added to the appropriate arch back-end
CPUidle header, already included by the CPUidle arm64 driver, where
CPUidle arch related function declarations belong.

Reported-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-02-27 18:05:56 +00:00
Catalin Marinas 9d42d48a34 arm64: compat Fix siginfo_t -> compat_siginfo_t conversion on big endian
The native (64-bit) sigval_t union contains sival_int (32-bit) and
sival_ptr (64-bit). When a compat application invokes a syscall that
takes a sigval_t value (as part of a larger structure, e.g.
compat_sys_mq_notify, compat_sys_timer_create), the compat_sigval_t
union is converted to the native sigval_t with sival_int overlapping
with either the least or the most significant half of sival_ptr,
depending on endianness. When the corresponding signal is delivered to a
compat application, on big endian the current (compat_uptr_t)sival_ptr
cast always returns 0 since sival_int corresponds to the top part of
sival_ptr. This patch fixes copy_siginfo_to_user32() so that sival_int
is copied to the compat_siginfo_t structure.

Cc: <stable@vger.kernel.org>
Reported-by: Bamvor Jian Zhang <bamvor.zhangjian@huawei.com>
Tested-by: Bamvor Jian Zhang <bamvor.zhangjian@huawei.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-02-27 18:05:56 +00:00
Catalin Marinas a1e50a8225 arm64: Increase the swiotlb buffer size 64MB
With commit 3690951fc6 (arm64: Use swiotlb late initialisation), the
swiotlb buffer size is limited to MAX_ORDER_NR_PAGES. However, there are
platforms with 32-bit only devices that require bounce buffering via
swiotlb. This patch changes the swiotlb initialisation to an early 64MB
memblock allocation. In order to get the swiotlb buffer correctly
allocated (via memblock_virt_alloc_low_nopanic), this patch also defines
ARCH_LOW_ADDRESS_LIMIT to the maximum physical address capable of 32-bit
DMA.

Reported-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Tested-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-02-27 18:05:55 +00:00
Sebastian Ott d94260832d s390/pci: unify pci_iomap symbol exports
Since commit 8cfc99b583 ("s390: add pci_iomap_range") we use
EXPORT_SYMBOL for pci_iomap but EXPORT_SYMBOL_GPL for pci_iounmap.
Change the related functions to use EXPORT_SYMBOL like the asm-generic
variants do.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-02-27 17:50:07 +01:00
Sebastian Ott 1803ba2d7a s390/pci: fix [un]map_resources sequence
Commit 8cfc99b583 ("s390: add pci_iomap_range") introduced counters
to keep track of the number of mappings created. This revealed that
we don't have our internal mappings in order when using hotunplug or
resume from hibernate. This patch addresses both issues.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-02-27 17:50:04 +01:00
Juergen Gross b8f05c8803 x86/xen: correct bug in p2m list initialization
Commit 054954eb05 ("xen: switch to
linear virtual mapped sparse p2m list") introduced an error.

During initialization of the p2m list a p2m identity area mapped by
a complete identity pmd entry has to be split up into smaller chunks
sometimes, if a non-identity pfn is introduced in this area.

If this non-identity pfn is not at index 0 of a p2m page the new
p2m page needed is initialized with wrong identity entries, as the
identity pfns don't start with the value corresponding to index 0,
but with the initial non-identity pfn. This results in weird wrong
mappings.

Correct the wrong initialization by starting with the correct pfn.

Cc: stable@vger.kernel.org # 3.19
Reported-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Tested-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-02-27 14:53:19 +00:00
Vineet Gupta 3240dd57e5 ARC: Fix thread_saved_pc()
The old implementation assumed that SP at the time of __switch_to() is
right above pt_regs which is almost certainly not the case as there will
be some stack build up between entry into kernel and leading up to
__switch_to

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-27 10:59:34 +05:30
Vineet Gupta 13648b0118 ARC: Fix KSTK_ESP()
/proc/<pid>/maps currently don't annotate stack vma with "[stack]"
This is because KSTK_ESP ie expected to return usermode SP of tsk while
currently it returns the kernel mode SP of a sleeping tsk.

While the fix is trivial, we also need to adjust the ARC kernel stack
unwinder to not use KSTK_SP and friends any more.

Cc: <stable@vger.kernel.org>
Reported-and-suggested-by: Alexey Brodkin <abrodkin@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-27 10:48:23 +05:30
Vineet Gupta ceed97ab4f ARC: perf: Enable generic software events
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-27 10:15:01 +05:30
Vineet Gupta 3a51d50f42 ARC: Make arc_unwind_core accessible externally
The arc unwinder can also be used for perf callchains.

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2015-02-27 10:15:00 +05:30
Chanwoo Choi ace283a04a ARM: EXYNOS: Fix wrong hwirq of RTC interrupt for Exynos3250 SoC
This patch fixes wrong hwirq of RTC irq for Exynos3250 SoC. When entering
suspend state, 'enable_irq_wake fail' happen because of the mismatch of RTC hwirq.

[  429.200937] Freezing user space processes ... (elapsed 0.002 seconds) done.
[  429.203383] Freezing remaining freezable tasks ... (elapsed 0.000 seconds) done.
[  429.209914] Suspending console(s) (use no_console_suspend to debug)
[  429.370685] wake enabled for irq 65
[  429.370837] wake enabled for irq 64
[  429.370868] wake enabled for irq 79
...
[  429.372120] s3c-rtc 10070000.rtc: enable_irq_wake failed

Fixes: a4f582f5c5 (ARM: EXYNOS: Add exynos3250 suspend-to-ram support)

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:58:19 +09:00
Krzysztof Kozlowski ca489c58ef ARM: EXYNOS: Don't use LDREX and STREX after disabling cache coherency
During CPU shutdown the exynos_cpu_power_down() is called after
disabling cache coherency and it uses LDREX and STREX instructions (by
calling of_machine_is_compatible() -> kobject_get() -> kref_get()).

The LDREX and STREX should not be used after disabling the cache
coherency so just use soc_is_exynos().

Fixes: adc548d77c ("ARM: EXYNOS: Use MCPM call-backs to support S2R
on exynos5420")

Reported-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:50:52 +09:00
Andrzej Hajda 2d2c9a8d0a ARM: dts: add display power domain for exynos5250
The patch adds domain definition and references to it in appropriate devices.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
[mszyprow: rebased onto generic power domains dt bindings]
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:29:32 +09:00
Marek Szyprowski c950ea6807 ARM: dts: add 'hdmi' clock to mixer nodes for exynos5250 and exynos5420
Mixed block needs to control hdmi clock to properly perform power on/off
operation, so add 'hdmi' clock also to mixer nodes.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:29:30 +09:00
Tomasz Stanislawski 7daa0be165 ARM: dts: enable hdmi support for exynos4210-universal_c210
This patch adds configuration of hw modules required to enable HDMI
support on Universal C210 board.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:29:30 +09:00
Marek Szyprowski 2561658b9c ARM: dts: enable hdmi support for exynos4412-odroid-common
This patch adds nodes specific to Exynos4412 based Odroid X/X2/U2/U3
boards required for enabling HDMI display.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:29:30 +09:00
Marek Szyprowski ec459c0c77 ARM: dts: add dependency between TV and LCD0 power domains for exynos4
TV Mixer needs both TV and LCD0 domains enabled to be fully operational.
This dependency is modelled by making TV power domains a sub-domain of
LCD0 power domain.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:27:28 +09:00
Marek Szyprowski ed80d4cab7 ARM: dts: add hdmi related nodes for exynos4 SoCs
This patch adds entries for HDMI, Mixer and i2c with hdmi-phy modules
found in Exynos 4210 and 4x12 SoCs.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:27:28 +09:00
Marek Szyprowski 0f7807518f ARM: EXYNOS: add support for sub-power domains
This patch adds support for making one power domain a sub-domain of
other domain. This is useful for modeling power dependences for devices
like TV Mixer or Camera ISP, which needs to have more than one power
domain enabled to be operational.

Based on previous work by Amit Daniel Kachhap <amit.daniel@samsung.com>.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:26:57 +09:00
Lukasz Majewski 9843a22360 ARM: dts: Provide dt bindings identical for Exynos TMU
Presented device tree bindings provide data already hardcoded in the
exynos_tmu_data.c file.
After this commit, it should be possible to reuse common thermal core
framework in Exynos SoCs.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:24:54 +09:00
Lukasz Majewski 6562504dfe ARM: dts: Trip points and sensor configuration data for exynos5440
This commit provides information about Exynos5440 device configuration.
Previously this information was available in exynos_tmu_data.c file.
Now it is available in the device tree.
Such approach allows reusing some common code for thermal.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:22:58 +09:00
Lukasz Majewski 328829a6ad ARM: dts: define default thermal-zones for exynos4
Trip points corresponding to the one defined in the exynos_tmu_data.c
for Exynos4 have been included.
This thermal-zones attribute is afterwards reused for Exynos4210,
Exynos4412 and Exynos5250.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:22:58 +09:00
Lukasz Majewski b350de6fa9 ARM: dts: default trip points definition for exynos5420
This code groups in one place default settings of trip points.
It is used in SoCs with multiple instances of TMU sensor.

Separate device tree file prevents from multiple copying of the
same data.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:22:56 +09:00
Lukasz Majewski 09a1247a89 ARM: dts: add TMU default definitions for exynos4412
Exynos 4 and 5 family of SoCs uses almost identical TMU sensor to
measure the on chip temperature. For this reason it is possible to
group TMU configuration parameters in one dts file.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:22:56 +09:00
Lukasz Majewski bf4a0bed36 ARM: dts: Adding CPU cooling binding for Exynos SoCs
Presented patch aims to move data necessary for correct CPU cooling device
configuration from exynos_tmu_data.c to device tree.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:22:56 +09:00
Lukasz Majewski 233e274ac7 ARM: dts: Enable TMU for exynos4412-odriod-common
This commit enables TMU IP block on the Exynos4412 Odroid based
devices such as Odroid U3.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:22:55 +09:00
Lukasz Majewski a59acc17a8 ARM: dts: Add LDO10 for TMU for exynos4412-odroid-common
This patch adds LDO10 regulator node for TMU.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:22:55 +09:00
Lukasz Majewski 907c10fcc5 ARM: dts: Enable TMU for exynos4210-trats
The thermal IP block (Thermal Management Unit) called TMU has been
enabled in this device.

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
2015-02-27 05:22:55 +09:00
Marc Zyngier f6242cac10 arm64: Fix text patching logic when using fixmap
Patch 2f896d5866 ("arm64: use fixmap for text patching") changed
the way we patch the kernel text, using a fixmap when the kernel or
modules are flagged as read only.

Unfortunately, a flaw in the logic makes it fall over when patching
modules without CONFIG_DEBUG_SET_MODULE_RONX enabled:

[...]
[   32.032636] Call trace:
[   32.032716] [<fffffe00003da0dc>] __copy_to_user+0x2c/0x60
[   32.032837] [<fffffe0000099f08>] __aarch64_insn_write+0x94/0xf8
[   32.033027] [<fffffe000009a0a0>] aarch64_insn_patch_text_nosync+0x18/0x58
[   32.033200] [<fffffe000009c3ec>] ftrace_modify_code+0x58/0x84
[   32.033363] [<fffffe000009c4e4>] ftrace_make_nop+0x3c/0x58
[   32.033532] [<fffffe0000164420>] ftrace_process_locs+0x3d0/0x5c8
[   32.033709] [<fffffe00001661cc>] ftrace_module_init+0x28/0x34
[   32.033882] [<fffffe0000135148>] load_module+0xbb8/0xfc4
[   32.034044] [<fffffe0000135714>] SyS_finit_module+0x94/0xc4
[...]

This is triggered by the use of virt_to_page() on a module address,
which ends to pointing to Nowhereland if you're lucky, or corrupt
your precious data if not.

This patch fixes the logic by mimicking what is done on arm:
- If we're patching a module and CONFIG_DEBUG_SET_MODULE_RONX is set,
  use vmalloc_to_page().
- If we're patching the kernel and CONFIG_DEBUG_RODATA is set,
  use virt_to_page().
- Otherwise, use the provided address, as we can write to it directly.

Tested on 4.0-rc1 as a KVM guest.

Reported-by: Richard W.M. Jones <rjones@redhat.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Laura Abbott <lauraa@codeaurora.org>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-02-26 18:34:27 +00:00
Ard Biesheuvel 0eee0fbd41 arm64: crypto: increase AES interleave to 4x
This patch increases the interleave factor for parallel AES modes
to 4x. This improves performance on Cortex-A57 by ~35%. This is
due to the 3-cycle latency of AES instructions on the A57's
relatively deep pipeline (compared to Cortex-A53 where the AES
instruction latency is only 2 cycles).

At the same time, disable inline expansion of the core AES functions,
as the performance benefit of this feature is negligible.

  Measured on AMD Seattle (using tcrypt.ko mode=500 sec=1):

  Baseline (2x interleave, inline expansion)
  ------------------------------------------
  testing speed of async cbc(aes) (cbc-aes-ce) decryption
  test 4 (128 bit key, 8192 byte blocks): 95545 operations in 1 seconds
  test 14 (256 bit key, 8192 byte blocks): 68496 operations in 1 seconds

  This patch (4x interleave, no inline expansion)
  -----------------------------------------------
  testing speed of async cbc(aes) (cbc-aes-ce) decryption
  test 4 (128 bit key, 8192 byte blocks): 124735 operations in 1 seconds
  test 14 (256 bit key, 8192 byte blocks): 92328 operations in 1 seconds

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-02-26 18:31:46 +00:00
Feng Kan 6910fa16db arm64: enable PTE type bit in the mask for pte_modify
Caught during Trinity testing. The pte_modify does not allow
modification for PTE type bit. This cause the test to hang
the system. It is found that the PTE can't transit from an
inaccessible page (b00) to a valid page (b11) because the mask
does not allow it. This happens when a big block of mmaped
memory is set the PROT_NONE, then the a small piece is broken
off and set to PROT_WRITE | PROT_READ cause a huge page split.

Signed-off-by: Feng Kan <fkan@apm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-02-26 18:30:12 +00:00
Yingjoe Chen 06ff87bae8 arm64: mm: remove unused functions and variable protoypes
The functions __cpu_flush_user_tlb_range and __cpu_flush_kern_tlb_range
were removed in commit fa48e6f780 'arm64: mm: Optimise tlb flush logic
where we have >4K granule'. Global variable cpu_tlb was never used in
arm64.

Remove them.

Signed-off-by: Yingjoe Chen <yingjoe.chen@mediatek.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-02-26 18:25:38 +00:00
Will Deacon f5e0a12ca2 arm64: psci: move psci firmware calls out of line
An arm64 allmodconfig fails to build with GCC 5 due to __asmeq
assertions in the PSCI firmware calling code firing due to mcount
preambles breaking our assumptions about register allocation of function
arguments:

  /tmp/ccDqJsJ6.s: Assembler messages:
  /tmp/ccDqJsJ6.s:60: Error: .err encountered
  /tmp/ccDqJsJ6.s:61: Error: .err encountered
  /tmp/ccDqJsJ6.s:62: Error: .err encountered
  /tmp/ccDqJsJ6.s:99: Error: .err encountered
  /tmp/ccDqJsJ6.s💯 Error: .err encountered
  /tmp/ccDqJsJ6.s:101: Error: .err encountered

This patch fixes the issue by moving the PSCI calls out-of-line into
their own assembly files, which are safe from the compiler's meddling
fingers.

Reported-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-02-26 18:23:53 +00:00
Nathan Lynch e1b6b6ce55 arm64: vdso: minor ABI fix for clock_getres
The vdso implementation of clock_getres currently returns 0 (success)
whenever a null timespec is provided by the caller, regardless of the
clock id supplied.

This behavior is incorrect.  It should fall back to syscall when an
unrecognized clock id is passed, even when the timespec argument is
null.  This ensures that clock_getres always returns an error for
invalid clock ids.

Signed-off-by: Nathan Lynch <nathan_lynch@mentor.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2015-02-26 18:13:51 +00:00
Geert Uytterhoeven 4a3a6f8669 ARM: multi_v7_defconfig: Enable shmobile platforms
Enable support for shmobile platforms that became multi-platform aware.
Several non-critical drivers and subsystems are built as modules, to keep
kernel size reasonable.

Tested on:
  - r8a73a4/ape6evm:
      - U-Boot fails with "Error: unrecognized/unsupported machine ID",
      - kexec works.
  - r8a7740/armadillo:
      - Hermit boot loader fails (larger image, more memory corruption),
      - kexec works.
  - r8a7791/koelsch,
  - sh73a0/kzm9g:
      - zImage+DTB from U-Boot needs CONFIG_ARM_ATAG_DTB_COMPAT=n,
      - kexec works.
  - am335x/boneblack.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-02-26 16:36:09 +01:00
Ingo Molnar e9e4e44309 Linux 34.0-rc1
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Merge tag 'v4.0-rc1' into perf/core, to refresh the tree

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-26 12:24:50 +01:00
Christian Borntraeger fb3d1c085c s390: let the compiler do page clearing
The hardware folks told me that for page clearing "when you exactly
know what to do, hand written xc+pfd is usally faster then mvcl for
page clearing, as it saves millicode overhead and parameter parsing
and checking" as long as you dont need the cache bypassing.
Turns out that gcc already does a proper xc,pfd loop.

A small test on z196 that does

buff = mmap(NULL, bufsize,PROT_EXEC|PROT_WRITE|PROT_READ,AP_PRIVATE| MAP_ANONYMOUS,0,0);
for ( i = 0; i < bufsize; i+= 256)
    buff[i] = 0x5;

gets 20% faster (touches every cache line of a page)

and

buff = mmap(NULL, bufsize,PROT_EXEC|PROT_WRITE|PROT_READ,AP_PRIVATE| MAP_ANONYMOUS,0,0);
for ( i = 0; i < bufsize; i+= 4096)
    buff[i] = 0x5;

is within noise ratio (touches one cache line of a page).

As the clear_page is usually called for first memory accesses
we can assume that at least one cache line is used afterwards,
so this change should be always better.
Another benchmark, a make -j 40 of my testsuite in tmpfs with
hot caches on a 32cpu system:

 -- unpatched --       --  patched  --
real     0m1.017s     real     0m0.994s   (~2% faster, but in noise)
user     0m5.339s     user     0m5.016s   (~6% faster)
sys      0m0.691s     sys      0m0.632s   (~8% faster)

Let use the same define to memset as the asm-generic variant

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-02-26 09:24:49 +01:00
Sebastian Ott f0483044c1 s390/pci: fix possible information leak in mmio syscall
Make sure that even in error situations we do not use copy_to_user
on uninitialized kernel memory.

Cc: stable@vger.kernel.org # 3.19+
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-02-26 09:24:48 +01:00
Heiko Carstens 72dace969d s390/jump label: improve and fix sanity check
Fix the output of the jump label sanity check and also print the
code pattern that is supposed to be written to the jump label.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-02-26 09:24:46 +01:00
Heiko Carstens 6f367769e3 s390/jump label: add missing jump_label_apply_nops() call
When modules are loaded we want to transform the compile time generated
nops into runtime generated nops. Otherwise the jump label sanity check
will detect invalid code when trying to patch code.

Fixes this crash:

Jump label code mismatch at __rds_conn_create+0x3c/0x720
Found:    c0 04 00 00 00 01
Expected: c0 04 00 00 00 00
Kernel panic - not syncing: Corrupted kernel text
CPU: 0 PID: 10 Comm: migration/0 Not tainted 3.19.0-01935-g006610f #14
Call Trace:
<0000000000113260> show_trace+0xf8/0x158)
<000000000011332a> show_stack+0x6a/0xe8
<000000000069fd64> dump_stack+0x7c/0xd8
<0000000000698d54> panic+0xe4/0x288
<00000000006984c6> jump_label_bug.isra.2+0xbe/0xc001
<000000000011200c> __jump_label_transform+0x94/0xc8

Reported-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-02-26 09:24:45 +01:00
Kishon Vijay Abraham I 0717103e65 ARM: DRA7: hwmod_data: Fix hwmod data for pcie
Fixed hwmod data for pcie by having the correct module mode offset.
Previously this module mode offset was part of pcie PHY which was wrong.
Now this module mode offset was moved to pcie hwmod and removed the hwmod data
for pcie phy. While at that renamed pcie_hwmod to pciess_hwmod in order
to match with the name given in TRM.

This helps to get rid of the following warning
"omap_hwmod: pcie1: _wait_target_disable failed"

[Grygorii.Strashko@linaro.org: Found the issue that actually caused
 "omap_hwmod: pcie1: _wait_target_disable failed"]
Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2015-02-26 00:02:28 -07:00
Peter Ujfalusi 6931795238 ARM: omap2+: omap_hwmod: Set unique lock_class_key per hwmod
Add struct lock_class_key to omap_hwmod struct and use it to set unique
lockdep class per hwmod.
This will ensure that lockdep will know that each omap_hwmod->_lock should
be treated as separate class and will not give false warning about deadlock
or other issues due to nested use of hwmods.
DRA7x's ATL hwmod is one example for this since McASP can select ATL clock
as functional clock, which will trigger nested oh->_lock usage. This will
trigger false warning from lockdep validator as it is dealing with classes
and for it all hwmod clocks are the same class.

Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2015-02-26 00:00:51 -07:00
Arnd Bergmann 6af714b069 Fixes for various omap devices. It's all dts and defconfig
changes for this set:
 
 - Fix wrong DMA properties for dma to avoid them getting
   copied wrong again before we start actually using them
 
 - USB fixes to revert the extcon changes as the driver did not
   get merged yet and cause issues
 
 - Omap5 and dra7 fixes to boot from sata
 
 - Fix few am437x issues for i2c and pinctrl
 
 - Fix beaglebone for hardwared USB configuration
 
 - Defconfig changes for NAND, SATA and TPS62362
 
 - Fix n900 i2c numbering for legacy user space and smc91x
   register offset so it works also for qemu
 
 - Fix incomplete USB configuration for dm816x
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Merge tag 'fixes-v4.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Fixes for various omap devices. It's all dts and defconfig
changes for this set:

- Fix wrong DMA properties for dma to avoid them getting
  copied wrong again before we start actually using them

- USB fixes to revert the extcon changes as the driver did not
  get merged yet and cause issues

- Omap5 and dra7 fixes to boot from sata

- Fix few am437x issues for i2c and pinctrl

- Fix beaglebone for hardwared USB configuration

- Defconfig changes for NAND, SATA and TPS62362

- Fix n900 i2c numbering for legacy user space and smc91x
  register offset so it works also for qemu

- Fix incomplete USB configuration for dm816x

* tag 'fixes-v4.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: am335x-bone*: usb0 is hardwired for peripheral
  ARM: dts: dra7x-evm: beagle-x15: Fix USB Host
  ARM: omap2plus_defconfig: Fix SATA boot
  ARM: omap2plus_defconfig: Enable OMAP NAND BCH driver
  ARM: dts: dra7: Correct the dma controller's property names
  ARM: dts: omap5: Correct the dma controller's property names
  ARM: dts: omap4: Correct the dma controller's property names
  ARM: dts: omap3: Correct the dma controller's property names
  ARM: dts: omap2: Correct the dma controller's property names
  ARM: dts: am437x-idk: fix sleep pinctrl state
  ARM: omap2plus_defconfig: enable TPS62362 regulator
  ARM: dts: am437x-idk: fix TPS62362 i2c bus
  ARM: dts: n900: Fix offset for smc91x ethernet
  ARM: dts: n900: fix i2c bus numbering
  ARM: dts: Fix USB dts configuration for dm816x
  ARM: dts: OMAP5: Fix SATA PHY node
  ARM: dts: DRA7: Fix SATA PHY node
2015-02-25 17:12:35 +01:00
Sudeep Holla 7934d69abf arm64: Add L2 cache topology to ARM Ltd boards/models
Commit 5d425c1865 ("arm64: kernel: add support for cpu cache
information") adds cacheinfo support for ARM64. Since there's no
architectural way of detecting the cpus that share particular cache,
device tree can be used and the core cacheinfo already supports the
same.

This patch adds the L2 cache topology on Juno board, FVP/RTSM and
foundation models.

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Liviu Dudau <Liviu.Dudau@arm.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2015-02-25 17:12:21 +01:00
Ingo Molnar e3eff6fe7d Merge branch 'clockevents/4.0-rc1' of git://git.linaro.org/people/daniel.lezcano/linux into timers/urgent
Pull clockevents driver fixes from Daniel Lezcano:

  - Fix the Kconfig to prevent the asm9260 timer to be compiled with
    allyesconfig with sparc/sparc64 (Daniel Lezcano)

  - Reorder the mtk driver init sequence in order to prevent a potential race
    when the clock is registered before the irq handler is set (Matthias Brugger)

  - Fix a section mismatch for the pxa driver (Robert Jarzmik)

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-25 14:44:45 +01:00
Matt Fleming 59bf7fd45c perf/x86/intel: Enable conflicting event scheduling for CQM
We can leverage the workqueue that we use for RMID rotation to support
scheduling of conflicting monitoring events. Allowing events that
monitor conflicting things is done at various other places in the perf
subsystem, so there's precedent there.

An example of two conflicting events would be monitoring a cgroup and
simultaneously monitoring a task within that cgroup.

This uses the cache_groups list as a queuing mechanism, where every
event that reaches the front of the list gets the chance to be scheduled
in, possibly descheduling any conflicting events that are running.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kanaka Juvva <kanaka.d.juvva@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Link: http://lkml.kernel.org/r/1422038748-21397-10-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-25 13:53:36 +01:00
Matt Fleming bff671dba7 perf/x86/intel: Perform rotation on Intel CQM RMIDs
There are many use cases where people will want to monitor more tasks
than there exist RMIDs in the hardware, meaning that we have to perform
some kind of multiplexing.

We do this by "rotating" the RMIDs in a workqueue, and assigning an RMID
to a waiting event when the RMID becomes unused.

This scheme reserves one RMID at all times for rotation. When we need to
schedule a new event we give it the reserved RMID, pick a victim event
from the front of the global CQM list and wait for the victim's RMID to
drop to zero occupancy, before it becomes the new reserved RMID.

We put the victim's RMID onto the limbo list, where it resides for a
"minimum queue time", which is intended to save ourselves an expensive
smp IPI when the RMID is unlikely to have a occupancy value below
__intel_cqm_threshold.

If we fail to recycle an RMID, even after waiting the minimum queue time
then we need to increment __intel_cqm_threshold. There is an upper bound
on this threshold, __intel_cqm_max_threshold, which is programmable from
userland as /sys/devices/intel_cqm/max_recycling_threshold.

The comments above __intel_cqm_rmid_rotate() have more details.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kanaka Juvva <kanaka.d.juvva@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Link: http://lkml.kernel.org/r/1422038748-21397-9-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-25 13:53:35 +01:00
Matt Fleming bfe1fcd268 perf/x86/intel: Support task events with Intel CQM
Add support for task events as well as system-wide events. This change
has a big impact on the way that we gather LLC occupancy values in
intel_cqm_event_read().

Currently, for system-wide (per-cpu) events we defer processing to
userspace which knows how to discard all but one cpu result per package.

Things aren't so simple for task events because we need to do the value
aggregation ourselves. To do this, we defer updating the LLC occupancy
value in event->count from intel_cqm_event_read() and do an SMP
cross-call to read values for all packages in intel_cqm_event_count().
We need to ensure that we only do this for one task event per cache
group, otherwise we'll report duplicate values.

If we're a system-wide event we want to fallback to the default
perf_event_count() implementation. Refactor this into a common function
so that we don't duplicate the code.

Also, introduce PERF_TYPE_INTEL_CQM, since we need a way to track an
event's task (if the event isn't per-cpu) inside of the Intel CQM PMU
driver.  This task information is only availble in the upper layers of
the perf infrastructure.

Other perf backends stash the target task in event->hw.*target so we
need to do something similar. The task is used to determine whether
events should share a cache group and an RMID.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kanaka Juvva <kanaka.d.juvva@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Cc: linux-api@vger.kernel.org
Link: http://lkml.kernel.org/r/1422038748-21397-8-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-25 13:53:34 +01:00
Matt Fleming 35298e554c perf/x86/intel: Implement LRU monitoring ID allocation for CQM
It's possible to run into issues with re-using unused monitoring IDs
because there may be stale cachelines associated with that ID from a
previous allocation. This can cause the LLC occupancy values to be
inaccurate.

To attempt to mitigate this problem we place the IDs on a least recently
used list, essentially a FIFO. The basic idea is that the longer the
time period between ID re-use the lower the probability that stale
cachelines exist in the cache.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kanaka Juvva <kanaka.d.juvva@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Link: http://lkml.kernel.org/r/1422038748-21397-7-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-25 13:53:33 +01:00
Matt Fleming 4afbb24ce5 perf/x86/intel: Add Intel Cache QoS Monitoring support
Future Intel Xeon processors support a Cache QoS Monitoring feature that
allows tracking of the LLC occupancy for a task or task group, i.e. the
amount of data in pulled into the LLC for the task (group).

Currently the PMU only supports per-cpu events. We create an event for
each cpu and read out all the LLC occupancy values.

Because this results in duplicate values being written out to userspace,
we also export a .per-pkg event file so that the perf tools only
accumulate values for one cpu per package.

Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kanaka Juvva <kanaka.d.juvva@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Link: http://lkml.kernel.org/r/1422038748-21397-6-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-25 13:53:32 +01:00
Peter P Waskiewicz Jr cbc82b1726 x86: Add support for Intel Cache QoS Monitoring (CQM) detection
This patch adds support for the new Cache QoS Monitoring (CQM)
feature found in future Intel Xeon processors.  It includes the
new values to track CQM resources to the cpuinfo_x86 structure,
plus the CPUID detection routines for CQM.

CQM allows a process, or set of processes, to be tracked by the CPU
to determine the cache usage of that task group.  Using this data
from the CPU, software can be written to extract this data and
report cache usage and occupancy for a particular process, or
group of processes.

More information about Cache QoS Monitoring can be found in the
Intel (R) x86 Architecture Software Developer Manual, section 17.14.

Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Borislav Petkov <bp@suse.de>
Cc: Chris Webb <chris@arachsys.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Jacob Shin <jacob.w.shin@gmail.com>
Cc: Jan Beulich <JBeulich@suse.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kanaka Juvva <kanaka.d.juvva@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Steven Honeyman <stevenhoneyman@gmail.com>
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Link: http://lkml.kernel.org/r/1422038748-21397-5-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-25 13:53:31 +01:00
Daniel Lezcano a8b1b9fc92 clockevents: asm9260: Fix compilation error with sparc/sparc64 allyesconfig
The Kconfig options for the asm9260 timer is wrong as it can be selected by
another platform with allyes config and thus leading to a compilation failure
as some non arch related code is pulled by the compilation.

Fix this by having the platform Kconfig to select the timer as it is done for
the others drivers.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Oleksij Rempel <linux@rempel-privat.de>

Conflicts:
	drivers/clocksource/Kconfig
2015-02-25 10:28:22 +01:00
Robert Nelson 67fd14b3ec ARM: dts: am335x-bone*: usb0 is hardwired for peripheral
Fixes: http://bugs.elinux.org/issues/127

the bb.org community was seeing random reboots before this change.

Signed-off-by: Robert Nelson <robertcnelson@gmail.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:44 -08:00
Roger Quadros addfcde7c4 ARM: dts: dra7x-evm: beagle-x15: Fix USB Host
In commit 87517d26d8 ("ARM: dts: dra7-evm: Add extcon nodes for USB")
we enabled Extcon USB gpio to tackle the USB ID pin and get
peripheral mode to work.

But the extcon-gpio-usb driver [1] didn't make it into v4.0
and this makes the USB driver defer probe indefinitely breaking
USB Host functionality.

As a temporary fix we remove the extcon handle from the
USB controller and add it back when the extcon driver
merges in v4.1.

[1] - https://lkml.org/lkml/2015/2/2/187

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:43 -08:00
Roger Quadros acd83a1652 ARM: omap2plus_defconfig: Fix SATA boot
SATA operation depends on PIPE3 PHY and if we want
to boot from SATA drives, we have to have the PIPE3 PHY
driver built-in.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:43 -08:00
Roger Quadros f8c360588c ARM: omap2plus_defconfig: Enable OMAP NAND BCH driver
Without this NAND doesn't work on most EVMs.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:43 -08:00
Peter Ujfalusi 08d9b327e6 ARM: dts: dra7: Correct the dma controller's property names
According to the Documentation/devicetree/bindings/dma/dma.txt the
dma-channels and dma-requests property should not have '#'.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:43 -08:00
Peter Ujfalusi 951c1c04c6 ARM: dts: omap5: Correct the dma controller's property names
According to the Documentation/devicetree/bindings/dma/dma.txt the
dma-channels and dma-requests property should not have '#'.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:43 -08:00
Peter Ujfalusi 24ac177049 ARM: dts: omap4: Correct the dma controller's property names
According to the Documentation/devicetree/bindings/dma/dma.txt the
dma-channels and dma-requests property should not have '#'.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:43 -08:00
Peter Ujfalusi 7e8d25d596 ARM: dts: omap3: Correct the dma controller's property names
According to the Documentation/devicetree/bindings/dma/dma.txt the
dma-channels and dma-requests property should not have '#'.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:43 -08:00
Peter Ujfalusi caa73a4688 ARM: dts: omap2: Correct the dma controller's property names
According to the Documentation/devicetree/bindings/dma/dma.txt the
dma-channels and dma-requests property should not have '#'.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:43 -08:00
Felipe Balbi ee5d9cd2b3 ARM: dts: am437x-idk: fix sleep pinctrl state
we have i2c0 sleep pinctrl state but were passing
default state anyhow. Fix that.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:43 -08:00
Felipe Balbi 57fd4e5d38 ARM: omap2plus_defconfig: enable TPS62362 regulator
This regulator is used on AM437x Industrial Development Kit.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:43 -08:00
Felipe Balbi 1236044825 ARM: dts: am437x-idk: fix TPS62362 i2c bus
As it turns out, tps62362 is actually on I2C bus0,
not bus1. This has gone unnoticed because Linux
doesn't use (as of now) that regulator at all, it's
setup by the bootloader and left as is.

While at that, also add missing reg property for
our regulator.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:43 -08:00
Pali Rohár cb9071d4bb ARM: dts: n900: Fix offset for smc91x ethernet
Offset for smc91x must be zero otherwise smc91x linux kernel driver does not
detect smc91x ethernet hardware in qemu N900 machine.

The 0x300 offset was used to supress a warning the smsc911x
driver produces about non-standard offset as 0x300 seems to
be the EEPROM default. As only three address lines are
connected both 0 and 0x300 will work just fine with 0 being
correct. The warning about the non-standard offset can be
fixed by writing to EEPROM as that's needed in any case to
set the MAC address.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
[tony@atomide.com: updated comments, just use 0 instead of 0x0]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:43 -08:00
Ivaylo Dimitrov 1861cda0de ARM: dts: n900: fix i2c bus numbering
With legacy boot i2c buses on Nokia N900 are numbered i2c1, i2c2 and i2c3.
Commit 20b80942ef ("ARM: dts: OMAP3+: Add i2c aliases") fixed the
numbering with DT boot, but introduced a regression on N900 - aliases
become i2c0, i2c1 and i2c2. Fix that by providing the correct aliases in
the board dts.

Signed-off-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@gmail.com>
Tested-by: Pali Rohár <pali.rohar@gmail.com>
Acked-by: Nishanth Menon <nm@ti.com>
[tony@atomide.com: this is needed for legacy user space to work]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 10:35:43 -08:00
Linus Torvalds b24e2bdde4 xen: regression and bug fixes for 4.0-rc1
- Fix two regression introduced in 4.0-rc1 affecting PV/PVH guests in
   certain configurations.
 - Prevent pvscsi frontends bypassing backend checks.
 - Allow privcmd hypercalls to be preempted even on kernel with
   voluntary preemption.  This fixes soft-lockups with long running
   toolstack hypercalls (e.g., when creating/destroying large domains).
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Merge tag 'stable/for-linus-4.0-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen bugfixes from David Vrabel:
 "Xen regression and bug fixes for 4.0-rc1

   - Fix two regressions introduced in 4.0-rc1 affecting PV/PVH guests
     in certain configurations.

   - Prevent pvscsi frontends bypassing backend checks.

   - Allow privcmd hypercalls to be preempted even on kernel with
     voluntary preemption.  This fixes soft-lockups with long running
     toolstack hypercalls (e.g., when creating/destroying large
     domains)"

* tag 'stable/for-linus-4.0-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/xen: Initialize cr4 shadow for 64-bit PV(H) guests
  xen-scsiback: mark pvscsi frontend request consumed only after last read
  x86/xen: allow privcmd hypercalls to be preempted
  x86/xen: Make sure X2APIC_ENABLE bit of MSR_IA32_APICBASE is not set
2015-02-24 09:18:48 -08:00
Linus Torvalds 84257ce6b7 Lguest weird config build fix, and update to the documentation.
Thanks,
 Rusty.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull lguest fixes from Rusty Russell:
 "Lguest weird config build fix, and update to the documentation"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  lguest: update help text.
  lguest: now depends on PCI
2015-02-24 09:14:43 -08:00
Tony Lindgren a54879a008 ARM: dts: Fix USB dts configuration for dm816x
Commit 7800064ba5 ("ARM: dts: Add basic dm816x device tree
configuration") added basic devices for dm816x, but I was not able
to test the USB completely because of an unconfigured USB phy, and
I only tested it to make sure the Mentor chips are detected and
clocked without a phy.

After testing the USB with actual devices I noticed a few issues
that should be fixed to avoid confusion:

- The USB id pin on dm8168-evm is hardwired and can be changed
  only by software. As there are two USB-A type connectors, let's
  start both in host mode instead of otg.

- The Mentor core is configured in such a way on dm8168-evm that
  it's not capable of multipoint at least on revision c board
  that I have.

- We need ranges for the syscon to properly set up the phy as
  children of the SCM syscon area.

- Let's not disable the second interface, the board specific
  dts files can do that if really needed. Most boards should
  just keep it enabled to ensure the device is idled properly.

Note that also a phy and several musb fixes are still needed to
make the USB to work properly in addition to this fix.

Cc: Brian Hutchinson <b.hutchman@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 08:48:52 -08:00
Roger Quadros a0182724ab ARM: dts: OMAP5: Fix SATA PHY node
The sata_ref_clk is a reference clock to the SATA phy.
This fixes SATA malfunction across suspend/resume or when
SATA driver is used as a module.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 08:16:49 -08:00
Roger Quadros 773c5a0fca ARM: dts: DRA7: Fix SATA PHY node
The sata_ref_clk is a reference clock to the SATA phy.
This fixes SATA malfunction across suspend/resume or when
SATA driver is used as a module.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2015-02-24 08:15:53 -08:00
James Hogan c2996cb29b metag: Fix KSTK_EIP() and KSTK_ESP() macros
The KSTK_EIP() and KSTK_ESP() macros should return the user program
counter (PC) and stack pointer (A0StP) of the given task. These are used
to determine which VMA corresponds to the user stack in
/proc/<pid>/maps, and for the user PC & A0StP in /proc/<pid>/stat.

However for Meta the PC & A0StP from the task's kernel context are used,
resulting in broken output. For example in following /proc/<pid>/maps
output, the 3afff000-3b021000 VMA should be described as the stack:

  # cat /proc/self/maps
  ...
  100b0000-100b1000 rwxp 00000000 00:00 0          [heap]
  3afff000-3b021000 rwxp 00000000 00:00 0

And in the following /proc/<pid>/stat output, the PC is in kernel code
(1074234964 = 0x40078654) and the A0StP is in the kernel heap
(1335981392 = 0x4fa17550):

  # cat /proc/self/stat
  51 (cat) R ... 1335981392 1074234964 ...

Fix the definitions of KSTK_EIP() and KSTK_ESP() to use
task_pt_regs(tsk)->ctx rather than (tsk)->thread.kernel_context. This
gets the registers from the user context stored after the thread info at
the base of the kernel stack, which is from the last entry into the
kernel from userland, regardless of where in the kernel the task may
have been interrupted, which results in the following more correct
/proc/<pid>/maps output:

  # cat /proc/self/maps
  ...
  0800b000-08070000 r-xp 00000000 00:02 207        /lib/libuClibc-0.9.34-git.so
  ...
  100b0000-100b1000 rwxp 00000000 00:00 0          [heap]
  3afff000-3b021000 rwxp 00000000 00:00 0          [stack]

And /proc/<pid>/stat now correctly reports the PC in libuClibc
(134320308 = 0x80190b4) and the A0StP in the [stack] region (989864576 =
0x3b002280):

  # cat /proc/self/stat
  51 (cat) R ... 989864576 134320308 ...

Reported-by: Alexey Brodkin <Alexey.Brodkin@synopsys.com>
Reported-by: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-metag@vger.kernel.org
Cc: <stable@vger.kernel.org> # v3.9+
2015-02-24 12:54:21 +00:00
Yannick Guerrini 579deee571 x86/platform/intel-mid: Fix trivial printk message typo in intel_mid_arch_setup()
Change 'Uknown' to 'Unknown'

Signed-off-by: Yannick Guerrini <yguerrini@tomshardware.fr>
Cc: trivial@kernel.org
Link: http://lkml.kernel.org/r/1424710358-10140-1-git-send-email-yguerrini@tomshardware.fr
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-24 08:52:37 +01:00
Robert Jarzmik d6cf30ca71 ARM: pxa: fix pxa interrupts handling in DT
The commit "ARM: pxa: arbitrarily set first interrupt number" changed
the first pxa interrupt to 16.

As a consequence, device-tree builds got broken, because :
 - pxa_mask_irq() and pxa_unmask_irq() are using IRQ_BIT()
 - IRQ_BIT(x) calculates the interrupts as : x - PXA_IRQ(0)

Before the commit, the first interrupt shift, PXA_IRQ(0) was 0,
therefore IRQ_BIT(x) was x. After the change, it is necessary that the
same shift of 16 is applied between the virtual interrupt number and the
hardware irq number.

This situation comes from the common irq_chip shared between legacy
platform builds and device-tree builds.

Fix the broken interrupts in DT case by adding this shift in the DT case
too.

As a consequence of the IRQ_BIT() is removed alltogether from interrupts
handling, even in the platform data types of platforms :
 - a legacy irq domain is used
 - the irq_chip handles hardware interrupts
 - the virtual to hardware interrupt conversion is fully handled by irq
   domain mechanics

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
2015-02-23 22:40:48 +01:00
Masanari Iida 5c0c75d33d ARM: pxa: Fix typo in zeus.c
This patch fix a typo in struct platform_device can_regulator_device.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
2015-02-23 22:40:09 +01:00
Paolo Bonzini 4ff6f8e61e KVM: emulate: fix CMPXCHG8B on 32-bit hosts
This has been broken for a long time: it broke first in 2.6.35, then was
almost fixed in 2.6.36 but this one-liner slipped through the cracks.
The bug shows up as an infinite loop in Windows 7 (and newer) boot on
32-bit hosts without EPT.

Windows uses CMPXCHG8B to write to page tables, which causes a
page fault if running without EPT; the emulator is then called from
kvm_mmu_page_fault.  The loop then happens if the higher 4 bytes are
not 0; the common case for this is that the NX bit (bit 63) is 1.

Fixes: 6550e1f165
Fixes: 16518d5ada
Cc: stable@vger.kernel.org   # 2.6.35+
Reported-by: Erik Rull <erik.rull@rdsoftware.de>
Tested-by: Erik Rull <erik.rull@rdsoftware.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-02-23 22:28:48 +01:00
Radim Krčmář 21bc8dc5b7 KVM: VMX: fix build without CONFIG_SMP
'apic' is not defined if !CONFIG_X86_64 && !CONFIG_X86_LOCAL_APIC.
Posted interrupt makes no sense without CONFIG_SMP, and
CONFIG_X86_LOCAL_APIC will be set with it.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2015-02-23 22:28:48 +01:00
Wei Huang 91314cb005 arm/arm64: KVM: Add exit reaons to kvm_exit event tracing
This patch extends trace_kvm_exit() to include KVM exit reasons
(i.e. EC of HSR). The tracing function then dumps both exit reason
and PC of vCPU, shown as the following. Tracing tools can use this
new exit_reason field to better understand the behavior of guest VMs.

886.301252: kvm_exit:             HSR_EC: 0x0024, PC: 0xfffffe0000506b28

Signed-off-by: Wei Huang <wei@redhat.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-02-23 22:28:48 +01:00
Jan Kiszka a050dfb21c ARM: KVM: Fix size check in __coherent_cache_guest_page
The check is supposed to catch page-unaligned sizes, not the inverse.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2015-02-23 22:28:47 +01:00
Boris Ostrovsky 5054daa285 x86/xen: Initialize cr4 shadow for 64-bit PV(H) guests
Commit 1e02ce4ccc ("x86: Store a per-cpu shadow copy of CR4")
introduced CR4 shadows.

These shadows are initialized in early boot code. The commit missed
initialization for 64-bit PV(H) guests that this patch adds.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-02-23 16:30:26 +00:00
David Vrabel fdfd811ddd x86/xen: allow privcmd hypercalls to be preempted
Hypercalls submitted by user space tools via the privcmd driver can
take a long time (potentially many 10s of seconds) if the hypercall
has many sub-operations.

A fully preemptible kernel may deschedule such as task in any upcall
called from a hypercall continuation.

However, in a kernel with voluntary or no preemption, hypercall
continuations in Xen allow event handlers to be run but the task
issuing the hypercall will not be descheduled until the hypercall is
complete and the ioctl returns to user space.  These long running
tasks may also trigger the kernel's soft lockup detection.

Add xen_preemptible_hcall_begin() and xen_preemptible_hcall_end() to
bracket hypercalls that may be preempted.  Use these in the privcmd
driver.

When returning from an upcall, call xen_maybe_preempt_hcall() which
adds a schedule point if if the current task was within a preemptible
hypercall.

Since _cond_resched() can move the task to a different CPU, clear and
set xen_in_preemptible_hcall around the call.

Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
2015-02-23 16:30:24 +00:00
Boris Ostrovsky 31795b470b x86/xen: Make sure X2APIC_ENABLE bit of MSR_IA32_APICBASE is not set
Commit d524165cb8 ("x86/apic: Check x2apic early") tests X2APIC_ENABLE
bit of MSR_IA32_APICBASE when CONFIG_X86_X2APIC is off and panics
the kernel when this bit is set.

Xen's PV guests will pass this MSR read to the hypervisor which will
return its version of the MSR, where this bit might be set. Make sure
we clear it before returning MSR value to the caller.

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2015-02-23 16:30:23 +00:00
Chen-Yu Tsai fdc0074c5f ARM: sunxi: Have ARCH_SUNXI select RESET_CONTROLLER for clock driver usage
As the sunxi usb clocks all contain a reset controller, it is not
possible to build the sunxi clock driver without RESET_CONTROLLER
enabled. Doing so results in an undefined symbol error:

    drivers/built-in.o: In function `sunxi_gates_clk_setup':
    linux/drivers/clk/sunxi/clk-sunxi.c:1071: undefined reference to
	`reset_controller_register'

This is possible if building a minimal kernel without PHY_SUN4I_USB.

The dependency issue is made visible at compile time instead of
link time by the new A80 mmc clocks, which also use a reset control
itself.

This patch makes ARCH_SUNXI select ARCH_HAS_RESET_CONTROLLER and
RESET_CONTROLLER.

Fixes: 559482d1f9 ARM: sunxi: Split the various SoCs support in Kconfig
Cc: <stable@vger.kernel.org> # 3.16+
Reported-by: Lourens Rozema <ik@lourensrozema.nl>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2015-02-23 10:44:54 +01:00
Marc Zyngier f3e39273e0 arm64: guard asm/assembler.h against multiple inclusions
asm/assembler.h lacks the usual guard against multiple inclusion,
leading to a compilation failure if it is accidentally included
twice.

Using the classic #ifndef/#define/#endif construct solves the issue.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-02-23 09:13:51 +00:00
Robin Murphy 115386f89b arm64: insn: fix compare-and-branch encodings
Fix cbz/cbnz having the mask offset by a bit, and add encodings for
tbz/tbnz so that all branch forms are represented.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Zi Shen Lim <zlim.lnx@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-02-23 09:13:45 +00:00
Pratyush Anand d0d6223018 arm64: ftrace: fix ftrace_modify_graph_caller for branch replace
ftrace_enable_ftrace_graph_caller and ftrace_disable_ftrace_graph_caller
should replace B(jmp) instruction and not BL(call) instruction.

Commit 9f1ae7596aad("arm64: Correct ftrace calls to
aarch64_insn_gen_branch_imm()") had a typo and used
AARCH64_INSN_BRANCH_LINK instead of AARCH64_INSN_BRANCH_NOLINK.

Either instruction will work, as the link register is saved/restored
across the branch but this better matches the intention of the code.

Signed-off-by: Pratyush Anand <panand@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-02-23 09:13:45 +00:00
Paul Clarke fea559f303 powerpc: Re-enable dynticks
Implement arch_irq_work_has_interrupt() for powerpc

Commit 9b01f5bf3 introduced a dependency on "IRQ work self-IPIs" for
full dynamic ticks to be enabled, by expecting architectures to
implement a suitable arch_irq_work_has_interrupt() routine.

Several arches have implemented this routine, including x86 (3010279f)
and arm (09f6edd4), but powerpc was omitted.

This patch implements this routine for powerpc.

The symptom, at boot (on powerpc systems) with "nohz_full=<CPU list>"
is displayed:

     NO_HZ: Can't run full dynticks because arch doesn't support irq work self-IPIs

after this patch:

     NO_HZ: Full dynticks CPUs: <CPU list>.

Tested against 3.19.

powerpc implements "IRQ work self-IPIs" by setting the decrementer to 1 in
arch_irq_work_raise(), which causes a decrementer exception on the next
timebase tick. We then handle the work in __timer_interrupt().

CC: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Paul A. Clarke <pc@us.ibm.com>
Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
[mpe: Flesh out change log, fix ws & include guards, remove include of processor.h]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-02-23 14:52:04 +11:00
Linus Torvalds be5e6616dd Merge branch 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull more vfs updates from Al Viro:
 "Assorted stuff from this cycle.  The big ones here are multilayer
  overlayfs from Miklos and beginning of sorting ->d_inode accesses out
  from David"

* 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (51 commits)
  autofs4 copy_dev_ioctl(): keep the value of ->size we'd used for allocation
  procfs: fix race between symlink removals and traversals
  debugfs: leave freeing a symlink body until inode eviction
  Documentation/filesystems/Locking: ->get_sb() is long gone
  trylock_super(): replacement for grab_super_passive()
  fanotify: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions
  Cachefiles: Fix up scripted S_ISDIR/S_ISREG/S_ISLNK conversions
  VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
  SELinux: Use d_is_positive() rather than testing dentry->d_inode
  Smack: Use d_is_positive() rather than testing dentry->d_inode
  TOMOYO: Use d_is_dir() rather than d_inode and S_ISDIR()
  Apparmor: Use d_is_positive/negative() rather than testing dentry->d_inode
  Apparmor: mediated_filesystem() should use dentry->d_sb not inode->i_sb
  VFS: Split DCACHE_FILE_TYPE into regular and special types
  VFS: Add a fallthrough flag for marking virtual dentries
  VFS: Add a whiteout dentry type
  VFS: Introduce inode-getting helpers for layered/unioned fs environments
  Infiniband: Fix potential NULL d_inode dereference
  posix_acl: fix reference leaks in posix_acl_create
  autofs4: Wrong format for printing dentry
  ...
2015-02-22 17:42:14 -08:00
Linus Torvalds 90c453ca22 Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fix from Russell King:
 "Just one fix this time around.  __iommu_alloc_buffer() can cause a
  BUG() if dma_alloc_coherent() is called with either __GFP_DMA32 or
  __GFP_HIGHMEM set.  The patch from Alexandre addresses this"

* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
  ARM: 8305/1: DMA: Fix kzalloc flags in __iommu_alloc_buffer()
2015-02-22 09:57:16 -08:00
David Howells e36cb0b89c VFS: (Scripted) Convert S_ISLNK/DIR/REG(dentry->d_inode) to d_is_*(dentry)
Convert the following where appropriate:

 (1) S_ISLNK(dentry->d_inode) to d_is_symlink(dentry).

 (2) S_ISREG(dentry->d_inode) to d_is_reg(dentry).

 (3) S_ISDIR(dentry->d_inode) to d_is_dir(dentry).  This is actually more
     complicated than it appears as some calls should be converted to
     d_can_lookup() instead.  The difference is whether the directory in
     question is a real dir with a ->lookup op or whether it's a fake dir with
     a ->d_automount op.

In some circumstances, we can subsume checks for dentry->d_inode not being
NULL into this, provided we the code isn't in a filesystem that expects
d_inode to be NULL if the dirent really *is* negative (ie. if we're going to
use d_inode() rather than d_backing_inode() to get the inode pointer).

Note that the dentry type field may be set to something other than
DCACHE_MISS_TYPE when d_inode is NULL in the case of unionmount, where the VFS
manages the fall-through from a negative dentry to a lower layer.  In such a
case, the dentry type of the negative union dentry is set to the same as the
type of the lower dentry.

However, if you know d_inode is not NULL at the call site, then you can use
the d_is_xxx() functions even in a filesystem.

There is one further complication: a 0,0 chardev dentry may be labelled
DCACHE_WHITEOUT_TYPE rather than DCACHE_SPECIAL_TYPE.  Strictly, this was
intended for special directory entry types that don't have attached inodes.

The following perl+coccinelle script was used:

use strict;

my @callers;
open($fd, 'git grep -l \'S_IS[A-Z].*->d_inode\' |') ||
    die "Can't grep for S_ISDIR and co. callers";
@callers = <$fd>;
close($fd);
unless (@callers) {
    print "No matches\n";
    exit(0);
}

my @cocci = (
    '@@',
    'expression E;',
    '@@',
    '',
    '- S_ISLNK(E->d_inode->i_mode)',
    '+ d_is_symlink(E)',
    '',
    '@@',
    'expression E;',
    '@@',
    '',
    '- S_ISDIR(E->d_inode->i_mode)',
    '+ d_is_dir(E)',
    '',
    '@@',
    'expression E;',
    '@@',
    '',
    '- S_ISREG(E->d_inode->i_mode)',
    '+ d_is_reg(E)' );

my $coccifile = "tmp.sp.cocci";
open($fd, ">$coccifile") || die $coccifile;
print($fd "$_\n") || die $coccifile foreach (@cocci);
close($fd);

foreach my $file (@callers) {
    chomp $file;
    print "Processing ", $file, "\n";
    system("spatch", "--sp-file", $coccifile, $file, "--in-place", "--no-show-diff") == 0 ||
	die "spatch failed";
}

[AV: overlayfs parts skipped]

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-02-22 11:38:41 -05:00
Yannick Guerrini a927792c19 x86/cpu/intel: Fix trivial typo in intel_tlb_table[]
Change 'ssociative' to 'associative'

Signed-off-by: Yannick Guerrini <yguerrini@tomshardware.fr>
Cc: Borislav Petkov <bp@suse.de>
Cc: Bryan O'Donoghue <pure.logic@nexus-software.ie>
Cc: Chris Bainbridge <chris.bainbridge@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Steven Honeyman <stevenhoneyman@gmail.com>
Cc: trivial@kernel.org
Link: http://lkml.kernel.org/r/1424558510-1420-1-git-send-email-yguerrini@tomshardware.fr
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-22 08:55:58 +01:00
Linus Torvalds a135c717d5 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
 "This is the main pull request for MIPS:

   - a number of fixes that didn't make the 3.19 release.

   - a number of cleanups.

   - preliminary support for Cavium's Octeon 3 SOCs which feature up to
     48 MIPS64 R3 cores with FPU and hardware virtualization.

   - support for MIPS R6 processors.

     Revision 6 of the MIPS architecture is a major revision of the MIPS
     architecture which does away with many of original sins of the
     architecture such as branch delay slots.  This and other changes in
     R6 require major changes throughout the entire MIPS core
     architecture code and make up for the lion share of this pull
     request.

   - finally some preparatory work for eXtendend Physical Address
     support, which allows support of up to 40 bit of physical address
     space on 32 bit processors"

     [ Ahh, MIPS can't leave the PAE brain damage alone.  It's like
       every CPU architect has to make that mistake, but pee in the snow
       by changing the TLA.  But whether it's called PAE, LPAE or XPA,
       it's horrid crud   - Linus ]

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (114 commits)
  MIPS: sead3: Corrected get_c0_perfcount_int
  MIPS: mm: Remove dead macro definitions
  MIPS: OCTEON: irq: add CIB and other fixes
  MIPS: OCTEON: Don't do acknowledge operations for level triggered irqs.
  MIPS: OCTEON: More OCTEONIII support
  MIPS: OCTEON: Remove setting of processor specific CVMCTL icache bits.
  MIPS: OCTEON: Core-15169 Workaround and general CVMSEG cleanup.
  MIPS: OCTEON: Update octeon-model.h code for new SoCs.
  MIPS: OCTEON: Implement DCache errata workaround for all CN6XXX
  MIPS: OCTEON: Add little-endian support to asm/octeon/octeon.h
  MIPS: OCTEON: Implement the core-16057 workaround
  MIPS: OCTEON: Delete unused COP2 saving code
  MIPS: OCTEON: Use correct instruction to read 64-bit COP0 register
  MIPS: OCTEON: Save and restore CP2 SHA3 state
  MIPS: OCTEON: Fix FP context save.
  MIPS: OCTEON: Save/Restore wider multiply registers in OCTEON III CPUs
  MIPS: boot: Provide more uImage options
  MIPS: Remove unneeded #ifdef __KERNEL__ from asm/processor.h
  MIPS: ip22-gio: Remove legacy suspend/resume support
  mips: pci: Add ifdef around pci_proc_domain
  ...
2015-02-21 19:41:38 -08:00
Linus Torvalds 2177033233 ARM: SoC fixes for 3.20-rc1
A few fixes that came in too late to make it into the first set of pull
 requests but would still be nice to have in -rc1. The majority of these
 are trivial build fixes for bugs that I found myself using randconfig
 testing, and a set of two patches from Uwe to mark DT strings as 'const'
 where appropriate, to resolve inconsistent section attributes.
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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:
 "A few fixes that came in too late to make it into the first set of
  pull requests but would still be nice to have in -rc1.

  The majority of these are trivial build fixes for bugs that I found
  myself using randconfig testing, and a set of two patches from Uwe to
  mark DT strings as 'const' where appropriate, to resolve inconsistent
  section attributes"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: make of_device_ids const
  ARM: make arrays containing machine compatible strings const
  ARM: mm: Remove Kconfig symbol CACHE_PL310
  ARM: rockchip: force built-in regulator support for PM
  ARM: mvebu: build armada375-smp code conditionally
  ARM: sti: always enable RESET_CONTROLLER
  ARM: rockchip: make rockchip_suspend_init conditional
  ARM: ixp4xx: fix {in,out}s{bwl} data types
  ARM: prima2: do not select SMP_ON_UP
  ARM: at91: fix pm declarations
  ARM: davinci: multi-soc kernels require AUTO_ZRELADDR
  ARM: davinci: davinci_cfg_reg cannot be init
  ARM: BCM: put back ARCH_MULTI_V7 dependency for mobile
  ARM: vexpress: use ARM_CPU_SUSPEND if needed
  ARM: dts: add I2C device nodes for Broadcom Cygnus
  ARM: dts: BCM63xx: fix L2 cache properties
2015-02-21 19:21:54 -08:00
Linus Torvalds 1acd2de5fa Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull more input updates from Dmitry Torokhov:
 "The second round of updates for the input subsystem.

  Updates to ALPS an bfin_roraty drivers and a couple oother fixups"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: psmouse - use IS_ENABLED instead of homegrown code
  Input: bfin_rotary - introduce open and close methods
  Input: bfin_rotary - convert to use managed resources
  Input: bfin_rotary - use generic IO functions
  Input: bfin_rotary - move pin lists into into platform data
  Input: bfin_rotary - move platform header to linux/platform_data
  Input: bfin_rotary - mark suspend and resume code as __maybe_unused
  Input: bfin_rotary - fix potential oops in interrupt handler
  Input: ALPS - move v7 packet info to Documentation and v6 packet info
  Input: ALPS - fix confusing comment in protocol data
  Input: ALPS - do not mix trackstick and external PS/2 mouse data
  Input: ALPS - fix trackstick detection on some Dell Latitudes
  Input: ALPS - consolidate setting protocol parameters
  Input: ALPS - split protocol data from model info
  Input: ALPS - make Rushmore a separate protocol
  Input: ALPS - renumber protocol numbers
  Input: adi - remove an unnecessary check
  Input: pxa27x_keypad - remove an unneeded NULL check
  Input: soc_button_array - use "Windows" key for "Home"
2015-02-21 12:59:04 -08:00
Linus Torvalds 18a8d49973 The clock framework changes for 3.20 contain the usual driver additions,
enhancements and fixes mostly for ARM32, ARM64, MIPS and Power-based
 devices. Additionaly the framework core underwent a bit of surgery with
 two major changes. The boundary between the clock core and clock
 providers (e.g clock drivers) is now more well defined with dedicated
 provider helper functions. struct clk no longer maps 1:1 with the
 hardware clock but is a true per-user cookie which helps us tracker
 users of hardware clocks and debug bad behavior. The second major change
 is the addition of rate constraints for clocks. Rate ranges are now
 supported which are analogous to the voltage ranges in the regulator
 framework. Unfortunately these changes to the core created some
 breakeage. We think we fixed it all up but for this reason there are
 lots of last minute commits trying to undo the damage.
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Merge tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux

Pull clock framework updates from Mike Turquette:
 "The clock framework changes contain the usual driver additions,
  enhancements and fixes mostly for ARM32, ARM64, MIPS and Power-based
  devices.

  Additionally the framework core underwent a bit of surgery with two
  major changes:

   - The boundary between the clock core and clock providers (e.g clock
     drivers) is now more well defined with dedicated provider helper
     functions.  struct clk no longer maps 1:1 with the hardware clock
     but is a true per-user cookie which helps us tracker users of
     hardware clocks and debug bad behavior.

   - The addition of rate constraints for clocks.  Rate ranges are now
     supported which are analogous to the voltage ranges in the
     regulator framework.

  Unfortunately these changes to the core created some breakeage.  We
  think we fixed it all up but for this reason there are lots of last
  minute commits trying to undo the damage"

* tag 'clk-for-linus-3.20' of git://git.linaro.org/people/mike.turquette/linux: (113 commits)
  clk: Only recalculate the rate if needed
  Revert "clk: mxs: Fix invalid 32-bit access to frac registers"
  clk: qoriq: Add support for the platform PLL
  powerpc/corenet: Enable CLK_QORIQ
  clk: Replace explicit clk assignment with __clk_hw_set_clk
  clk: Add __clk_hw_set_clk helper function
  clk: Don't dereference parent clock if is NULL
  MIPS: Alchemy: Remove bogus args from alchemy_clk_fgcs_detr
  clkdev: Always allocate a struct clk and call __clk_get() w/ CCF
  clk: shmobile: div6: Avoid division by zero in .round_rate()
  clk: mxs: Fix invalid 32-bit access to frac registers
  clk: omap: compile legacy omap3 clocks conditionally
  clkdev: Export clk_register_clkdev
  clk: Add rate constraints to clocks
  clk: remove clk-private.h
  pci: xgene: do not use clk-private.h
  arm: omap2+ remove dead clock code
  clk: Make clk API return per-user struct clk instances
  clk: tegra: Define PLLD_DSI and remove dsia(b)_mux
  clk: tegra: Add support for the Tegra132 CAR IP block
  ...
2015-02-21 12:30:30 -08:00
Linus Torvalds d34696c220 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
 "Two patches to save some memory if CONFIG_NR_CPUS is large, a changed
  default for the use of compare-and-delay, and a couple of bug fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/spinlock: disabled compare-and-delay by default
  s390/mm: align 64-bit PIE binaries to 4GB
  s390/cacheinfo: coding style changes
  s390/cacheinfo: fix shared cpu masks
  s390/smp: reduce size of struct pcpu
  s390/topology: convert cpu_topology array to per cpu variable
  s390/topology: delay initialization of topology cpu masks
  s390/vdso: fix clock_gettime for CLOCK_THREAD_CPUTIME_ID, -2 and -3
2015-02-21 11:18:26 -08:00
Linus Torvalds f9677375b0 Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull Intel Quark SoC support from Ingo Molnar:
 "This adds support for Intel Quark X1000 SoC boards, used in the low
  power 32-bit x86 Intel Galileo microcontroller board intended for the
  Arduino space.

  There's been some preparatory core x86 patches for Quark CPU quirks
  merged already, but this rounds it all up and adds Kconfig enablement.
  It's a clean hardware enablement addition tree at this point"

* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/intel/quark: Fix simple_return.cocci warnings
  x86/intel/quark: Fix ptr_ret.cocci warnings
  x86/intel/quark: Add Intel Quark platform support
  x86/intel/quark: Add Isolated Memory Regions for Quark X1000
2015-02-21 11:12:07 -08:00
Linus Torvalds 10436cf881 Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar:
 "Two fixes: the paravirt spin_unlock() corruption/crash fix, and an
  rtmutex NULL dereference crash fix"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/spinlocks/paravirt: Fix memory corruption on unlock
  locking/rtmutex: Avoid a NULL pointer dereference on deadlock
2015-02-21 10:45:03 -08:00
Linus Torvalds 5fbe4c224c Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull misc x86 fixes from Ingo Molnar:
 "This contains:

   - EFI fixes
   - a boot printout fix
   - ASLR/kASLR fixes
   - intel microcode driver fixes
   - other misc fixes

  Most of the linecount comes from an EFI revert"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm/ASLR: Avoid PAGE_SIZE redefinition for UML subarch
  x86/microcode/intel: Handle truncated microcode images more robustly
  x86/microcode/intel: Guard against stack overflow in the loader
  x86, mm/ASLR: Fix stack randomization on 64-bit systems
  x86/mm/init: Fix incorrect page size in init_memory_mapping() printks
  x86/mm/ASLR: Propagate base load address calculation
  Documentation/x86: Fix path in zero-page.txt
  x86/apic: Fix the devicetree build in certain configs
  Revert "efi/libstub: Call get_memory_map() to obtain map and desc sizes"
  x86/efi: Avoid triple faults during EFI mixed mode calls
2015-02-21 10:41:29 -08:00
Linus Torvalds b5aeca54d0 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 uprobe/kprobe fixes from Ingo Molnar:
 "This contains two uprobes fixes, an uprobes comment update and a
  kprobes fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  kprobes/x86: Mark 2 bytes NOP as boostable
  uprobes/x86: Fix 2-byte opcode table
  uprobes/x86: Fix 1-byte opcode tables
  uprobes/x86: Add comment with insn opcodes, mnemonics and why we dont support them
2015-02-21 10:39:16 -08:00
Linus Torvalds 3f4d9925e9 Merge branches 'core-urgent-for-linus' and 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull rcu fix and x86 irq fix from Ingo Molnar:

 - Fix a bug that caused an RCU warning splat.

 - Two x86 irq related fixes: a hotplug crash fix and an ACPI IRQ
   registry fix.

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rcu: Clear need_qs flag to prevent splat

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/irq: Check for valid irq descriptor in check_irq_vectors_for_cpu_disable()
  x86/irq: Fix regression caused by commit b568b8601f
2015-02-21 10:36:06 -08:00
Petr Mladek 2a6730c8b6 kprobes/x86: Check for invalid ftrace location in __recover_probed_insn()
__recover_probed_insn() should always be called from an address
where an instructions starts. The check for ftrace_location()
might help to discover a potential inconsistency.

This patch adds WARN_ON() when the inconsistency is detected.
Also it adds handling of the situation when the original code
can not get recovered.

Suggested-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Petr Mladek <pmladek@suse.cz>
Cc: Ananth NMavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1424441250-27146-3-git-send-email-pmladek@suse.cz
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-21 10:33:31 +01:00
Petr Mladek 650b7b23cb kprobes/x86: Use 5-byte NOP when the code might be modified by ftrace
can_probe() checks if the given address points to the beginning
of an instruction. It analyzes all the instructions from the
beginning of the function until the given address. The code
might be modified by another Kprobe. In this case, the current
code is read into a buffer, int3 breakpoint is replaced by the
saved opcode in the buffer, and can_probe() analyzes the buffer
instead.

There is a bug that __recover_probed_insn() tries to restore
the original code even for Kprobes using the ftrace framework.
But in this case, the opcode is not stored. See the difference
between arch_prepare_kprobe() and arch_prepare_kprobe_ftrace().
The opcode is stored by arch_copy_kprobe() only from
arch_prepare_kprobe().

This patch makes Kprobe to use the ideal 5-byte NOP when the
code can be modified by ftrace. It is the original instruction,
see ftrace_make_nop() and ftrace_nop_replace().

Note that we always need to use the NOP for ftrace locations.
Kprobes do not block ftrace and the instruction might get
modified at anytime. It might even be in an inconsistent state
because it is modified step by step using the int3 breakpoint.

The patch also fixes indentation of the touched comment.

Note that I found this problem when playing with Kprobes. I did
it on x86_64 with gcc-4.8.3 that supported -mfentry. I modified
samples/kprobes/kprobe_example.c and added offset 5 to put
the probe right after the fentry area:

 static struct kprobe kp = {
 	.symbol_name	= "do_fork",
+	.offset = 5,
 };

Then I was able to load kprobe_example before jprobe_example
but not the other way around:

  $> modprobe jprobe_example
  $> modprobe kprobe_example
  modprobe: ERROR: could not insert 'kprobe_example': Invalid or incomplete multibyte or wide character

It did not make much sense and debugging pointed to the bug
described above.

Signed-off-by: Petr Mladek <pmladek@suse.cz>
Acked-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Ananth NMavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1424441250-27146-2-git-send-email-pmladek@suse.cz
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-02-21 10:33:30 +01:00
Niklas Cassel 44923c9cfa MIPS: sead3: Corrected get_c0_perfcount_int
Commit e9de688dac ("irqchip: mips-gic: Support local interrupts")
updated several platforms. This is a copy paste error.

Signed-off-by: Niklas Cassel <niklass@axis.com>
Reviewed-by: Andrew Bresticker <abrestic@chromium.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9245/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-02-20 23:53:09 +01:00
Andreas Ruprecht 8fc5ec7044 MIPS: mm: Remove dead macro definitions
In commit c441d4a54c ("MIPS: mm: Only build one microassembler that
is suitable"), the Makefile at arch/mips/mm was rewritten to only
build the "right" microassembler file, depending on whether
CONFIG_CPU_MICROMIPS is set or not.

In the files, however, there are still preprocessor definitions
depending on CONFIG_CPU_MICROMIPS. The #ifdef around them can now
never evaluate to true, so let's remove them altogether.

This inconsistency was found using the undertaker-checkpatch tool.

Signed-off-by: Andreas Ruprecht <rupran@einserver.de>
Reviewed-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: Valentin Rothberg <valentinrothberg@gmail.com>
Cc: Paul Bolle <pebolle@tiscali.nl>
Patchwork: https://patchwork.linux-mips.org/patch/9267/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-02-20 23:42:00 +01:00
David Daney 64b139f97c MIPS: OCTEON: irq: add CIB and other fixes
- Use of_irq_init() to initialize interrupt controllers
- Get rid of some unlikely()
- Add CIB to support SATA and other interrupts
- Add support for CIU SUM2 interrupt sources

Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Leonid Rosenboim <lrosenboim@caviumnetworks.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com>
Signed-off-by: Peter Swain <peter.swain@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.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
Patchwork: https://patchwork.linux-mips.org/patch/8947/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-02-20 15:33:40 +01:00