Since this flash doesn't have a Profile 1.0 table, the Octal DTR
capabilities are enabled in the post SFDP fixup, along with the 8D-8D-8D
fast read settings.
Enable Octal DTR mode with 20 dummy cycles to allow running at the
maximum supported frequency of 200Mhz.
The flash supports the soft reset sequence. So, add the flag in the
flash's info.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-16-p.yadav@ti.com
The Cypress Semper flash is an xSPI compliant octal DTR flash. Add
support for using it in octal DTR mode.
The flash by default boots in a hybrid sector mode. But the sector map
table on the part I had was programmed incorrectly and the SMPT values
on the flash don't match the public datasheet. Specifically, in some
places erase type 3 was used instead of 4. In addition, the region sizes
were incorrect in some places. So, for testing I set CFR3N[3] to enable
uniform sector sizes. Since the uniform sector mode bit is a
non-volatile bit, this series does not change it to avoid making any
permanent changes to the flash configuration. The correct data to
implement a fixup is not available right now and will be done in a
follow-up patch if needed.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
[vigneshr@ti.com: Drop unnecessary sleep in Octal DTR switch sequence]
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-15-p.yadav@ti.com
On resume, the init procedure will be run that will re-enable it.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-14-p.yadav@ti.com
Perform a Soft Reset on shutdown on flashes that support it so that the
flash can be reset to its initial state and any configurations made by
spi-nor (given that they're only done in volatile registers) will be
reset. This will hand back the flash in pristine state for any further
operations on it.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-13-p.yadav@ti.com
A Soft Reset sequence will return the flash to Power-on-Reset (POR)
state. It consists of two commands: Soft Reset Enable and Soft Reset.
Find out if the sequence is supported from BFPT DWORD 16.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-12-p.yadav@ti.com
Allow flashes to specify a hook to enable octal DTR mode. Use this hook
whenever possible to get optimal transfer speeds.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-11-p.yadav@ti.com
Parse just the 22nd dword and look for the 'DTR Octal Mode Enable
Volatile bit'.
SPI_NOR_IO_MODE_EN_VOLATILE should be set just for the flashes
that don't define the optional SFDP SCCR Map. For the others,
let the SFDP do its job and fill the SNOR_F_IO_MODE_EN_VOLATILE
flag. We avoid this way polluting the flash flags when declaring
one.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20201005153138.6437-10-p.yadav@ti.com
We don't want to enter a stateful mode, where a X-X-X I/O mode
is entered by setting a non-volatile bit, because in case of a
reset or a crash, once in the non-volatile mode, we may not be able
to recover in bootloaders and we may break the SPI NOR boot.
Forbid by default the I/O modes that are set via a non-volatile bit.
SPI_NOR_IO_MODE_EN_VOLATILE should be set just for the flashes that
don't define the optional SFDP SCCR Map, so that we don't pollute the
flash info flags.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20201005153138.6437-9-p.yadav@ti.com
Some controllers, like the cadence qspi controller, have trouble reading
only 1 byte in DTR mode. So, do 2 byte reads for SR and FSR commands in
DTR mode, and then discard the second byte.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-8-p.yadav@ti.com
The xSPI Profile 1.0 table specifies how many dummy cycles and address
bytes are needed for the Read Status Register command in octal DTR mode.
Use that information to send the correct Read SR command.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-7-p.yadav@ti.com
This table is indication that the flash is xSPI compliant and hence
supports octal DTR mode. Extract information like the fast read opcode,
dummy cycles, the number of dummy cycles needed for a Read Status
Register command, and the number of address bytes needed for a Read
Status Register command.
We don't know what speed the controller is running at. Find the fast
read dummy cycles for the fastest frequency the flash can run at to be
sure we are never short of dummy cycles. If nothing is available,
default to 20. Flashes that use a different value should update it in
their fixup hooks.
Since we want to set read settings, expose spi_nor_set_read_settings()
in core.h.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-6-p.yadav@ti.com
Some devices in DTR mode expect an extra command byte called the
extension. The extension can either be same as the opcode, bitwise
inverse of the opcode, or another additional byte forming a 16-byte
opcode. Get the extension type from the BFPT. For now, only flashes with
"repeat" and "inverse" extensions are supported.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-5-p.yadav@ti.com
Double Transfer Rate (DTR) is SPI protocol in which data is transferred
on each clock edge as opposed to on each clock cycle. Make
framework-level changes to allow supporting flashes in DTR mode.
Right now, mixed DTR modes are not supported. So, for example a mode
like 4S-4D-4D will not work. All phases need to be either DTR or STR.
The xSPI spec says that "The program commands provide SPI backward
compatible commands for programming data...". So 8D-8D-8D page program
opcodes are populated with using 1S-1S-1S opcodes.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-4-p.yadav@ti.com
They are thin wrappers around
nor->controller_ops->{read_reg,write_reg,erase}(). In a future commit
DTR support will be added. These ops can not be supported by the
controller_ops hooks and these helpers will make it easier to reject
those calls.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-3-p.yadav@ti.com
ENOTSUPP is not a SUSV4 error code. Using EOPNOTSUPP is preferred
in its stead.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-2-p.yadav@ti.com
Here are some small Documentation fixes for 5.10-rc3 that were fallout
from the larger documentation update we did in 5.10-rc2. Nothing major
here at all, but all of these have been in linux-next and resolve build
warnings when building the documentation files.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core documentation fixes from Greg KH:
"Some small Documentation fixes that were fallout from the larger
documentation update we did in 5.10-rc2.
Nothing major here at all, but all of these have been in linux-next
and resolve build warnings when building the documentation files"
* tag 'driver-core-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
Documentation: remove mic/index from misc-devices/index.rst
scripts: get_api.pl: Add sub-titles to ABI output
scripts: get_abi.pl: Don't let ABI files to create subtitles
docs: leds: index.rst: add a missing file
docs: ABI: sysfs-class-net: fix a typo
docs: ABI: sysfs-driver-dma-ioatdma: what starts with /sys
Here are a small number of small tty and serial fixes for some reported
problems for the tty core, vt code, and some serial drivers.
They include fixes for:
- a buggy and obsolete vt font ioctl removal
- 8250_mtk serial baudrate runtime warnings
- imx serial earlycon build configuration fix
- txx9 serial driver error path cleanup issues
- tty core fix in release_tty that can be triggered by trying to
bind an invalid serial port name to a speakup console device
Almost all of these have been in linux-next without any problems, the
only one that hasn't, just deletes code :)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are a small number of small tty and serial fixes for some
reported problems for the tty core, vt code, and some serial drivers.
They include fixes for:
- a buggy and obsolete vt font ioctl removal
- 8250_mtk serial baudrate runtime warnings
- imx serial earlycon build configuration fix
- txx9 serial driver error path cleanup issues
- tty core fix in release_tty that can be triggered by trying to bind
an invalid serial port name to a speakup console device
Almost all of these have been in linux-next without any problems, the
only one that hasn't, just deletes code :)"
* tag 'tty-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
vt: Disable KD_FONT_OP_COPY
tty: fix crash in release_tty if tty->port is not set
serial: txx9: add missing platform_driver_unregister() on error in serial_txx9_init
tty: serial: imx: enable earlycon by default if IMX_SERIAL_CONSOLE is enabled
serial: 8250_mtk: Fix uart_get_baud_rate warning
Here are some small USB fixes and new device ids for 5.10-rc3
They include:
- USB gadget fixes for some reported issues
- Fixes for the every-troublesome apple fastcharge driver,
hopefully we finally have it right.
- More USB core quirks for odd devices
- USB serial driver fixes for some long-standing issues that
were recently found
- some new USB serial driver device ids
All have been in linux-next with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some small USB fixes and new device ids:
- USB gadget fixes for some reported issues
- Fixes for the ever-troublesome apple fastcharge driver, hopefully
we finally have it right.
- More USB core quirks for odd devices
- USB serial driver fixes for some long-standing issues that were
recently found
- some new USB serial driver device ids
All have been in linux-next with no reported issues"
* tag 'usb-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: apple-mfi-fastcharge: fix reference leak in apple_mfi_fc_set_property
usb: mtu3: fix panic in mtu3_gadget_stop()
USB: serial: option: add Telit FN980 composition 0x1055
USB: serial: option: add LE910Cx compositions 0x1203, 0x1230, 0x1231
USB: serial: cyberjack: fix write-URB completion race
USB: Add NO_LPM quirk for Kingston flash drive
USB: serial: option: add Quectel EC200T module support
usb: raw-gadget: fix memory leak in gadget_setup
usb: dwc2: Avoid leaving the error_debugfs label unused
usb: dwc3: ep0: Fix delay status handling
usb: gadget: fsl: fix null pointer checking
usb: gadget: goku_udc: fix potential crashes in probe
usb: dwc3: pci: add support for the Intel Alder Lake-S
current->group_leader->exit_signal may change during copy_process() if
current->real_parent exits.
Move the assignment inside tasklist_lock to avoid the race.
Signed-off-by: Eddy Wu <eddy_wu@trendmicro.com>
Acked-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It's buggy:
On Fri, Nov 06, 2020 at 10:30:08PM +0800, Minh Yuan wrote:
> We recently discovered a slab-out-of-bounds read in fbcon in the latest
> kernel ( v5.10-rc2 for now ). The root cause of this vulnerability is that
> "fbcon_do_set_font" did not handle "vc->vc_font.data" and
> "vc->vc_font.height" correctly, and the patch
> <https://lkml.org/lkml/2020/9/27/223> for VT_RESIZEX can't handle this
> issue.
>
> Specifically, we use KD_FONT_OP_SET to set a small font.data for tty6, and
> use KD_FONT_OP_SET again to set a large font.height for tty1. After that,
> we use KD_FONT_OP_COPY to assign tty6's vc_font.data to tty1's vc_font.data
> in "fbcon_do_set_font", while tty1 retains the original larger
> height. Obviously, this will cause an out-of-bounds read, because we can
> access a smaller vc_font.data with a larger vc_font.height.
Further there was only one user ever.
- Android's loadfont, busybox and console-tools only ever use OP_GET
and OP_SET
- fbset documentation only mentions the kernel cmdline font: option,
not anything else.
- systemd used OP_COPY before release 232 published in Nov 2016
Now unfortunately the crucial report seems to have gone down with
gmane, and the commit message doesn't say much. But the pull request
hints at OP_COPY being broken
https://github.com/systemd/systemd/pull/3651
So in other words, this never worked, and the only project which
foolishly every tried to use it, realized that rather quickly too.
Instead of trying to fix security issues here on dead code by adding
missing checks, fix the entire thing by removing the functionality.
Note that systemd code using the OP_COPY function ignored the return
value, so it doesn't matter what we're doing here really - just in
case a lone server somewhere happens to be extremely unlucky and
running an affected old version of systemd. The relevant code from
font_copy_to_all_vcs() in systemd was:
/* copy font from active VT, where the font was uploaded to */
cfo.op = KD_FONT_OP_COPY;
cfo.height = vcs.v_active-1; /* tty1 == index 0 */
(void) ioctl(vcfd, KDFONTOP, &cfo);
Note this just disables the ioctl, garbage collecting the now unused
callbacks is left for -next.
v2: Tetsuo found the old mail, which allowed me to find it on another
archive. Add the link too.
Acked-by: Peilin Ye <yepeilin.cs@gmail.com>
Reported-by: Minh Yuan <yuanmingbuaa@gmail.com>
References: https://lists.freedesktop.org/archives/systemd-devel/2016-June/036935.html
References: https://github.com/systemd/systemd/pull/3651
Cc: Greg KH <greg@kroah.com>
Cc: Peilin Ye <yepeilin.cs@gmail.com>
Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://lore.kernel.org/r/20201108153806.3140315-1-daniel.vetter@ffwll.ch
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Fix an uninitialized struct problem.
- Fix an iomap problem zeroing unwritten EOF blocks.
- Fix some clumsy error handling when writeback fails on
blocksize < pagesize filesystems.
- Fix a retry loop not resetting loop variables properly.
- Fix scrub flagging rtinherit inodes on a non-rt fs, since the kernel
actually does permit that combination.
- Fix excessive page cache flushing when unsharing part of a file.
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Merge tag 'xfs-5.10-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
- Fix an uninitialized struct problem
- Fix an iomap problem zeroing unwritten EOF blocks
- Fix some clumsy error handling when writeback fails on filesystems
with blocksize < pagesize
- Fix a retry loop not resetting loop variables properly
- Fix scrub flagging rtinherit inodes on a non-rt fs, since the kernel
actually does permit that combination
- Fix excessive page cache flushing when unsharing part of a file
* tag 'xfs-5.10-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: only flush the unshared range in xfs_reflink_unshare
xfs: fix scrub flagging rtinherit even if there is no rt device
xfs: fix missing CoW blocks writeback conversion retry
iomap: clean up writeback state logic on writepage error
iomap: support partial page discard on writeback block mapping failure
xfs: flush new eof page on truncate to avoid post-eof corruption
xfs: set xefi_discard when creating a deferred agfl free log intent item
Merge procfs splice read fixes from Christoph Hellwig:
"Greg reported a problem due to the fact that Android tests use procfs
files to test splice, which stopped working with the changes for
set_fs() removal.
This series adds read_iter support for seq_file, and uses those for
various proc files using seq_file to restore splice read support"
[ Side note: Christoph initially had a scripted "move everything over"
patch, which looks fine, but I personally would prefer us to actively
discourage splice() on random files. So this does just the minimal
basic core set of proc file op conversions.
For completeness, and in case people care, that script was
sed -i -e 's/\.proc_read\(\s*=\s*\)seq_read/\.proc_read_iter\1seq_read_iter/g'
but I'll wait and see if somebody has a strong argument for using
splice on random small /proc files before I'd run it on the whole
kernel. - Linus ]
* emailed patches from Christoph Hellwig <hch@lst.de>:
proc "seq files": switch to ->read_iter
proc "single files": switch to ->read_iter
proc/stat: switch to ->read_iter
proc/cpuinfo: switch to ->read_iter
proc: wire up generic_file_splice_read for iter ops
seq_file: add seq_read_iter
- Use SYM_FUNC_START_WEAK in the mem* ASM functions instead of a
combination of .weak and SYM_FUNC_START_LOCAL which makes LLVMs
integrated assembler upset.
- Correct the mitigation selection logic which prevented the related prctl
to work correctly.
- Make the UV5 hubless system work correctly by fixing up the malformed
table entries and adding the missing ones.
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Merge tag 'x86-urgent-2020-11-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"A set of x86 fixes:
- Use SYM_FUNC_START_WEAK in the mem* ASM functions instead of a
combination of .weak and SYM_FUNC_START_LOCAL which makes LLVMs
integrated assembler upset
- Correct the mitigation selection logic which prevented the related
prctl to work correctly
- Make the UV5 hubless system work correctly by fixing up the
malformed table entries and adding the missing ones"
* tag 'x86-urgent-2020-11-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/platform/uv: Recognize UV5 hubless system identifier
x86/platform/uv: Remove spaces from OEM IDs
x86/platform/uv: Fix missing OEM_TABLE_ID
x86/speculation: Allow IBPB to be conditionally enabled on CPUs with always-on STIBP
x86/lib: Change .weak to SYM_FUNC_START_WEAK for arch/x86/lib/mem*_64.S
parser.
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Merge tag 'perf-urgent-2020-11-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Thomas Gleixner:
"A single fix for the perf core plugging a memory leak in the address
filter parser"
* tag 'perf-urgent-2020-11-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Fix a memory leak in perf_event_parse_addr_filter()
underlying RT mutex was not handled correctly and triggering a BUG()
instead of treating it as another variant of retry condition.
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Merge tag 'locking-urgent-2020-11-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull futex fix from Thomas Gleixner:
"A single fix for the futex code where an intermediate state in the
underlying RT mutex was not handled correctly and triggering a BUG()
instead of treating it as another variant of retry condition"
* tag 'locking-urgent-2020-11-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Handle transient "ownerless" rtmutex state correctly
- Fix the fallout of the IPI as interrupt conversion in Kconfig and the
BCM2836 interrupt chip driver/
- Fixes for interrupt affinity setting and the handling of hierarchical
irq domains in the SiFive PLIC driver.
- Make the unmapped event handling in the TI SCI driver work correctly.
- A few minor fixes and cleanups in various chip drivers and Kconfig.
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Merge tag 'irq-urgent-2020-11-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"A set of fixes for interrupt chip drivers:
- Fix the fallout of the IPI as interrupt conversion in Kconfig and
the BCM2836 interrupt chip driver
- Fixes for interrupt affinity setting and the handling of
hierarchical irq domains in the SiFive PLIC driver
- Make the unmapped event handling in the TI SCI driver work
correctly
- A few minor fixes and cleanups in various chip drivers and Kconfig"
* tag 'irq-urgent-2020-11-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
dt-bindings: irqchip: ti, sci-inta: Fix diagram indentation for unmapped events
irqchip/ti-sci-inta: Add support for unmapped event handling
dt-bindings: irqchip: ti, sci-inta: Update for unmapped event handling
irqchip/renesas-intc-irqpin: Merge irlm_bit and needs_irlm
irqchip/sifive-plic: Fix chip_data access within a hierarchy
irqchip/sifive-plic: Fix broken irq_set_affinity() callback
irqchip/stm32-exti: Add all LP timer exti direct events support
irqchip/bcm2836: Fix missing __init annotation
irqchip/mips: Drop selection of IRQ_DOMAIN_HIERARCHY
irqchip/mst: Make mst_intc_of_init static
irqchip/mst: MST_IRQ should depend on ARCH_MEDIATEK or ARCH_MSTARV7
genirq: Let GENERIC_IRQ_IPI select IRQ_DOMAIN_HIERARCHY
that the lockdep interrupt state needs not to be established before calling
the RCU check.
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Merge tag 'core-urgent-2020-11-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull entry code fix from Thomas Gleixner:
"A single fix for the generic entry code to correct the wrong
assumption that the lockdep interrupt state needs not to be
established before calling the RCU check"
* tag 'core-urgent-2020-11-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
entry: Fix the incorrect ordering of lockdep and RCU check
Fix miscompilation with GCC 4.9 by using asm_goto_volatile for put_user().
A fix for an RCU splat at boot caused by a recent lockdep change.
A fix for a possible deadlock in our EEH debugfs code.
Several fixes for handling of _PAGE_ACCESSED on 32-bit platforms.
A build fix when CONFIG_NUMA=n.
Thanks to:
Andreas Schwab,
Christophe Leroy,
Oliver O'Halloran,
Qian Cai,
Scott Cheloha.
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Merge tag 'powerpc-5.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- fix miscompilation with GCC 4.9 by using asm_goto_volatile for put_user()
- fix for an RCU splat at boot caused by a recent lockdep change
- fix for a possible deadlock in our EEH debugfs code
- several fixes for handling of _PAGE_ACCESSED on 32-bit platforms
- build fix when CONFIG_NUMA=n
Thanks to Andreas Schwab, Christophe Leroy, Oliver O'Halloran, Qian Cai,
and Scott Cheloha.
* tag 'powerpc-5.10-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/numa: Fix build when CONFIG_NUMA=n
powerpc/8xx: Manage _PAGE_ACCESSED through APG bits in L1 entry
powerpc/8xx: Always fault when _PAGE_ACCESSED is not set
powerpc/40x: Always fault when _PAGE_ACCESSED is not set
powerpc/603: Always fault when _PAGE_ACCESSED is not set
powerpc: Use asm_goto_volatile for put_user()
powerpc/smp: Call rcu_cpu_starting() earlier
powerpc/eeh_cache: Fix a possible debugfs deadlock
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Merge tag 'io_uring-5.10-2020-11-07' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"A set of fixes for io_uring:
- SQPOLL cancelation fixes
- Two fixes for the io_identity COW
- Cancelation overflow fix (Pavel)
- Drain request cancelation fix (Pavel)
- Link timeout race fix (Pavel)"
* tag 'io_uring-5.10-2020-11-07' of git://git.kernel.dk/linux-block:
io_uring: fix link lookup racing with link timeout
io_uring: use correct pointer for io_uring_show_cred()
io_uring: don't forget to task-cancel drained reqs
io_uring: fix overflowed cancel w/ linked ->files
io_uring: drop req/tctx io_identity separately
io_uring: ensure consistent view of original task ->mm from SQPOLL
io_uring: properly handle SQPOLL request cancelations
io-wq: cancel request if it's asking for files and we don't have them
Gratian managed to trigger the BUG_ON(!newowner) in fixup_pi_state_owner().
This is one possible chain of events leading to this:
Task Prio Operation
T1 120 lock(F)
T2 120 lock(F) -> blocks (top waiter)
T3 50 (RT) lock(F) -> boosts T1 and blocks (new top waiter)
XX timeout/ -> wakes T2
signal
T1 50 unlock(F) -> wakes T3 (rtmutex->owner == NULL, waiter bit is set)
T2 120 cleanup -> try_to_take_mutex() fails because T3 is the top waiter
and the lower priority T2 cannot steal the lock.
-> fixup_pi_state_owner() sees newowner == NULL -> BUG_ON()
The comment states that this is invalid and rt_mutex_real_owner() must
return a non NULL owner when the trylock failed, but in case of a queued
and woken up waiter rt_mutex_real_owner() == NULL is a valid transient
state. The higher priority waiter has simply not yet managed to take over
the rtmutex.
The BUG_ON() is therefore wrong and this is just another retry condition in
fixup_pi_state_owner().
Drop the locks, so that T3 can make progress, and then try the fixup again.
Gratian provided a great analysis, traces and a reproducer. The analysis is
to the point, but it confused the hell out of that tglx dude who had to
page in all the futex horrors again. Condensed version is above.
[ tglx: Wrote comment and changelog ]
Fixes: c1e2f0eaf0 ("futex: Avoid violating the 10th rule of futex")
Reported-by: Gratian Crisan <gratian.crisan@ni.com>
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/87a6w6x7bb.fsf@ni.com
Link: https://lore.kernel.org/r/87sg9pkvf7.fsf@nanos.tec.linutronix.de
Pull i2c fixes from Wolfram Sang:
"Driver bugfixes for I2C.
Most of them are for the new mlxbf driver which got more exposure
after rc1. The sh_mobile patch should already have reached you during
the merge window, but I accidently dropped it. However, since it fixes
a problem with rebooting, it is still fine for rc3"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: designware: slave should do WRITE_REQUESTED before WRITE_RECEIVED
i2c: designware: call i2c_dw_read_clear_intrbits_slave() once
i2c: mlxbf: I2C_MLXBF should depend on MELLANOX_PLATFORM
i2c: mlxbf: Update author and maintainer email info
i2c: mlxbf: Update reference clock frequency
i2c: mlxbf: Remove unecessary wrapper functions
i2c: mlxbf: Fix resrticted cast warning of sparse
i2c: mlxbf: Add CONFIG_ACPI to guard ACPI function call
i2c: sh_mobile: implement atomic transfers
i2c: mediatek: move dma reset before i2c reset
* An SPDX comment style fix.
* A fix to ignore memory that is unusable.
* A fix to avoid setting a kernel text offset for the !MMU kernels, where
skipping the first page of memory is both unnecessary and costly.
* A fix to avoid passing the flag bits in satp to pfn_to_virt().
* A fix to __put_kernel_nofault, where we had the arguments to
__put_user_nocheck reversed.
* A workaround for a bug in the FU540 to avoid triggering PMP issues during
early boot.
* A change to how we pull symbols out of the vDSO. The old mechanism was
removed from binutils-2.35 (and has been backported to Debian's 2.34).
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Merge tag 'riscv-for-linus-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- SPDX comment style fix
- ignore memory that is unusable
- avoid setting a kernel text offset for the !MMU kernels, where
skipping the first page of memory is both unnecessary and costly
- avoid passing the flag bits in satp to pfn_to_virt()
- fix __put_kernel_nofault, where we had the arguments to
__put_user_nocheck reversed
- workaround for a bug in the FU540 to avoid triggering PMP issues
during early boot
- change to how we pull symbols out of the vDSO. The old mechanism was
removed from binutils-2.35 (and has been backported to Debian's 2.34)
* tag 'riscv-for-linus-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
RISC-V: Fix the VDSO symbol generaton for binutils-2.35+
RISC-V: Use non-PGD mappings for early DTB access
riscv: uaccess: fix __put_kernel_nofault()
riscv: fix pfn_to_virt err in do_page_fault().
riscv: Set text_offset correctly for M-Mode
RISC-V: Remove any memblock representing unusable memory area
risc-v: kernel: ftrace: Fixes improper SPDX comment style
Here's a fix for a long-standing issue with the cyberjack driver and
some new device ids.
All have been in linux-next with no reported issues.
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Merge tag 'usb-serial-5.10-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for 5.10-rc3
Here's a fix for a long-standing issue with the cyberjack driver and
some new device ids.
All have been in linux-next with no reported issues.
* tag 'usb-serial-5.10-rc3' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: option: add Telit FN980 composition 0x1055
USB: serial: option: add LE910Cx compositions 0x1203, 0x1230, 0x1231
USB: serial: cyberjack: fix write-URB completion race
USB: serial: option: add Quectel EC200T module support
As shown through runtime testing, the "filename" allocation is not
always freed in perf_event_parse_addr_filter().
There are three possible ways that this could happen:
- It could be allocated twice on subsequent iterations through the loop,
- or leaked on the success path,
- or on the failure path.
Clean up the code flow to make it obvious that 'filename' is always
freed in the reallocation path and in the two return paths as well.
We rely on the fact that kfree(NULL) is NOP and filename is initialized
with NULL.
This fixes the leak. No other side effects expected.
[ Dan Carpenter: cleaned up the code flow & added a changelog. ]
[ Ingo Molnar: updated the changelog some more. ]
Fixes: 375637bc52 ("perf/core: Introduce address range filtering")
Signed-off-by: "kiyin(尹亮)" <kiyin@tencent.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: "Srivatsa S. Bhat" <srivatsa@csail.mit.edu>
Cc: Anthony Liguori <aliguori@amazon.com>
--
kernel/events/core.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
Testing shows a problem in that UV5 hubless systems were not being
recognized. Add them to the list of OEM IDs checked.
Fixes: 6c7794423a ("Add UV5 direct references")
Signed-off-by: Mike Travis <mike.travis@hpe.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201105222741.157029-4-mike.travis@hpe.com
Testing shows that trailing spaces caused problems with the OEM_ID and
the OEM_TABLE_ID. One being that the OEM_ID would not string compare
correctly. Another the OEM_ID and OEM_TABLE_ID would be concatenated
in the printout. Remove any trailing spaces.
Fixes: 1e61f5a95f ("Add and decode Arch Type in UVsystab")
Signed-off-by: Mike Travis <mike.travis@hpe.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201105222741.157029-3-mike.travis@hpe.com
Testing shows a problem in that the OEM_TABLE_ID was missing for
hubless systems. This is used to determine the APIC type (legacy or
extended). Add the OEM_TABLE_ID to the early hubless processing.
Fixes: 1e61f5a95f ("Add and decode Arch Type in UVsystab")
Signed-off-by: Mike Travis <mike.travis@hpe.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201105222741.157029-2-mike.travis@hpe.com
our REQUEST_CLOSE message. The code that handled this case was
inadvertently disabled in 5.9, this patch removes it entirely and
fixes the problem in a way that is consistent with ceph-fuse.
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Merge tag 'ceph-for-5.10-rc3' of git://github.com/ceph/ceph-client
Pull ceph fix from Ilya Dryomov:
"A fix for a potential stall on umount caused by the MDS dropping our
REQUEST_CLOSE message. The code that handled this case was
inadvertently disabled in 5.9, this patch removes it entirely and
fixes the problem in a way that is consistent with ceph-fuse"
* tag 'ceph-for-5.10-rc3' of git://github.com/ceph/ceph-client:
ceph: check session state after bumping session->s_seq
This Kselftest fixes update for Linux 5.10-rc3 consists of fixes to
ftrace test and several fixes from Tommi Rantala for several tests.
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Merge tag 'linux-kselftest-fixes-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull Kselftest fixes from Shuah Khan:
"Fixes to the ftrace test and several fixes from Tommi Rantala for
various other tests"
* tag 'linux-kselftest-fixes-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests: binderfs: use SKIP instead of XFAIL
selftests: clone3: use SKIP instead of XFAIL
selftests: core: use SKIP instead of XFAIL in close_range_test.c
selftests: proc: fix warning: _GNU_SOURCE redefined
selftests: pidfd: drop needless linux/kcmp.h inclusion in pidfd_setns_test.c
selftests: pidfd: add CONFIG_CHECKPOINT_RESTORE=y to config
selftests: pidfd: skip test on kcmp() ENOSYS
selftests: pidfd: use ksft_test_result_skip() when skipping test
selftests/harness: prettify SKIP message whitespace again
selftests: pidfd: fix compilation errors due to wait.h
selftests: filter kselftest headers from command in lib.mk
selftests/ftrace: check for do_sys_openat2 in user-memory test
selftests/ftrace: Use $FUNCTION_FORK to reference kernel fork function
Three driver fixes. Two (alua and hpsa) are in hard to trigger
attach/detach situations but the mp3sas one involves a polled to
interrupt switch over that could trigger in any high IOPS situation.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Three driver fixes. Two (alua and hpsa) are in hard to trigger
attach/detach situations but the mp3sas one involves a polled to
interrupt switch over that could trigger in any high IOPS situation"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: mpt3sas: Fix timeouts observed while reenabling IRQ
scsi: scsi_dh_alua: Avoid crash during alua_bus_detach()
scsi: hpsa: Fix memory leak in hpsa_init_one()
Pull mtd fixes from Miquel Raynal.
* 'mtd/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
mtd: rawnand: stm32_fmc2: fix broken ECC
mtd: spi-nor: Fix address width on flash chips > 16MB
mtd: spi-nor: Don't copy self-pointing struct around
mtd: rawnand: ifc: Move the ECC engine initialization to the right place
mtd: rawnand: mxc: Move the ECC engine initialization to the right place
This is an additional fix on top of 5e31ba0c05 (spi: bcm2835: fix gpio
cs level inversion) - when sending my prior pull request I had
misremembred the status of that patch, apologies for the noise here.
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Merge tag 'spi-fix-v5.10-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fix from Mark Brown:
"This is an additional fix on top of 5e31ba0c05 ('spi: bcm2835: fix
gpio cs level inversion') - when sending my prior pull request I had
misremembred the status of that patch, apologies for the noise here"
* tag 'spi-fix-v5.10-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: bcm2835: remove use of uninitialized gpio flags variable
Quite a bunch of small fixes that have been gathered since the last PR
including the changes like below:
- HD-audio runtime PM fixes and refactoring
- HD-audio and USB-audio quirks
- SOF warning fix
- Various ASoC device-specific fixes for Intel, Qualcomm, etc
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Merge tag 'sound-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Quite a bunch of small fixes that have been gathered since the last
pull, including changes like below:
- HD-audio runtime PM fixes and refactoring
- HD-audio and USB-audio quirks
- SOF warning fix
- Various ASoC device-specific fixes for Intel, Qualcomm, etc"
* tag 'sound-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (26 commits)
ALSA: usb-audio: Add implicit feedback quirk for Qu-16
ASoC: mchp-spdiftx: Do not set Validity bit(s)
ALSA: usb-audio: Add implicit feedback quirk for MODX
ALSA: usb-audio: add usb vendor id as DSD-capable for Khadas devices
ALSA: hda/realtek - Enable headphone for ASUS TM420
ALSA: hda: prevent undefined shift in snd_hdac_ext_bus_get_link()
ASoC: qcom: lpass-cpu: Fix clock disable failure
ASoC: qcom: lpass-sc7180: Fix MI2S bitwidth field bit positions
ASoC: codecs: wcd9335: Set digital gain range correctly
ASoC: codecs: wcd934x: Set digital gain range correctly
ALSA: hda: Reinstate runtime_allow() for all hda controllers
ALSA: hda: Separate runtime and system suspend
ALSA: hda: Refactor codec PM to use direct-complete optimization
ALSA: hda/realtek - Fixed HP headset Mic can't be detected
ALSA: usb-audio: Add implicit feedback quirk for Zoom UAC-2
ALSA: make snd_kcontrol_new name a normal string
ALSA: fix kernel-doc markups
ASoC: SOF: loader: handle all SOF_IPC_EXT types
ASoC: cs42l51: manage mclk shutdown delay
ASoC: qcom: sdm845: set driver name correctly
...
fonts:
- constify font structures.
MAINTAINERS:
- Fix path for amdgpu power management
amdgpu:
- Add support for more navi1x SKUs
- Fix for suspend on CI dGPUs
- VCN DPG fix for Picasso
- Sienna Cichlid fixes
- Polaris DPM fix
- Add support for Green Sardine
amdkfd:
- Fix an allocation failure check
i915:
- Fix set domain's cache coherency
- Fixes around breadcrumbs
- Fix encoder lookup during PSR atomic
- Hold onto an explicit ref to i915_vma_work.pinned
- gvt: HWSP reset handling fix
- gvt: flush workaround
- gvt: vGPU context pin/unpin
- gvt: mmio cmd access fix for bxt/apl
imx:
- drop unused functions and callbacks
- reuse imx_drm_encoder_parse_of
- spinlock rework
- memory leak fix
- minor cleanups
vc4:
- resource cleanup fix
panfrost:
- madvise/shrinker fix
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Merge tag 'drm-fixes-2020-11-06-1' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"It's Friday here so that means another installment of drm fixes to
distract you from the counting process.
Changes all over the place, the amdgpu changes contain support for a
new GPU that is close to current one already in the tree (Green
Sardine) so it shouldn't have much side effects.
Otherwise imx has a few cleanup patches and fixes, amdgpu and i915
have around the usual smattering of fixes, fonts got constified, and
vc4/panfrost has some minor fixes. All in all a fairly regular rc3.
We have an outstanding nouveau regression, but the author is looking
into the fix, so should be here next week.
I now return you to counting.
fonts:
- constify font structures.
MAINTAINERS:
- Fix path for amdgpu power management
amdgpu:
- Add support for more navi1x SKUs
- Fix for suspend on CI dGPUs
- VCN DPG fix for Picasso
- Sienna Cichlid fixes
- Polaris DPM fix
- Add support for Green Sardine
amdkfd:
- Fix an allocation failure check
i915:
- Fix set domain's cache coherency
- Fixes around breadcrumbs
- Fix encoder lookup during PSR atomic
- Hold onto an explicit ref to i915_vma_work.pinned
- gvt: HWSP reset handling fix
- gvt: flush workaround
- gvt: vGPU context pin/unpin
- gvt: mmio cmd access fix for bxt/apl
imx:
- drop unused functions and callbacks
- reuse imx_drm_encoder_parse_of
- spinlock rework
- memory leak fix
- minor cleanups
vc4:
- resource cleanup fix
panfrost:
- madvise/shrinker fix"
* tag 'drm-fixes-2020-11-06-1' of git://anongit.freedesktop.org/drm/drm: (55 commits)
drm/amdgpu/display: remove DRM_AMD_DC_GREEN_SARDINE
drm/amd/display: Add green_sardine support to DM
drm/amd/display: Add green_sardine support to DC
drm/amdgpu: enable vcn support for green_sardine (v2)
drm/amdgpu: enable green_sardine_asd.bin loading (v2)
drm/amdgpu/sdma: add sdma engine support for green_sardine (v2)
drm/amdgpu: add gfx support for green_sardine (v2)
drm/amdgpu: add soc15 common ip block support for green_sardine (v3)
drm/amdgpu: add green_sardine support for gpu_info and ip block setting (v2)
drm/amdgpu: add Green_Sardine APU flag
drm/amdgpu: resolved ASD loading issue on sienna
amdkfd: Check kvmalloc return before memcpy
drm/amdgpu: update golden setting for sienna_cichlid
amd/amdgpu: Disable VCN DPG mode for Picasso
drm/amdgpu/swsmu: remove duplicate call to smu_set_default_dpm_table
drm/i915: Hold onto an explicit ref to i915_vma_work.pinned
drm/i915/gt: Flush xcs before tgl breadcrumbs
drm/i915/gt: Expose more parameters for emitting writes into the ring
drm/i915: Fix encoder lookup during PSR atomic check
drm/i915/gt: Use the local HWSP offset during submission
...
Including:
- Fix a NULL-ptr dereference in the Intel VT-d driver
- Two fixes for Intel SVM support
- Increase IRQ remapping table size in the AMD IOMMU driver. The
old number of 128 turned out to be too low for some recent
devices.
- Fix a mask check in generic IOMMU code
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Merge tag 'iommu-fixes-v5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
- Fix a NULL-ptr dereference in the Intel VT-d driver
- Two fixes for Intel SVM support
- Increase IRQ remapping table size in the AMD IOMMU driver. The old
number of 128 turned out to be too low for some recent devices.
- Fix a mask check in generic IOMMU code
* tag 'iommu-fixes-v5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu: Fix a check in iommu_check_bind_data()
iommu/vt-d: Fix a bug for PDP check in prq_event_thread
iommu/vt-d: Fix sid not set issue in intel_svm_bind_gpasid()
iommu/vt-d: Fix kernel NULL pointer dereference in find_domain()
iommu/amd: Increase interrupt remapping table limit to 512 entries
- Fix early use of kprobes
- Fix kernel placement in kexec_file_load()
- Bump maximum number of NUMA nodes
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Here's the weekly batch of fixes for arm64. Not an awful lot here, but
there are still a few unresolved issues relating to CPU hotplug, RCU
and IRQ tracing that I hope to queue fixes for next week.
Summary:
- Fix early use of kprobes
- Fix kernel placement in kexec_file_load()
- Bump maximum number of NUMA nodes"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: kexec_file: try more regions if loading segments fails
arm64: kprobes: Use BRK instead of single-step when executing instructions out-of-line
arm64: NUMA: Kconfig: Increase NODES_SHIFT to 4
Pratyush Yadav