Commit Graph

649041 Commits

Author SHA1 Message Date
Josef Bacik
d61b7f972d nbd: only set MSG_MORE when we have more to send
A user noticed that write performance was horrible over loopback and we
traced it to an inversion of when we need to set MSG_MORE.  It should be
set when we have more bvec's to send, not when we are on the last bvec.
This patch made the test go from 20 iops to 78k iops.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Fixes: 429a787be6 ("nbd: fix use-after-free of rq/bio in the xmit path")
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-19 14:31:50 -07:00
Linus Torvalds
81aaeaac46 pci-v4.10-fixes-1
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Merge tag 'pci-v4.10-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - recognize that a PCI-to-PCIe bridge originates a PCIe hierarchy, so
   we enumerate that hierarchy correctly

 - X-Gene: fix a change merged for v4.10 that broke MSI

 - Keystone: avoid reading undefined registers, which can cause
   asynchronous external aborts

 - Supermicro X8DTH-i/6/iF/6F: ignore broken _CRS that caused us to
   change (and break) existing I/O port assignments

* tag 'pci-v4.10-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI/MSI: pci-xgene-msi: Fix CPU hotplug registration handling
  PCI: Enumerate switches below PCI-to-PCIe bridges
  x86/PCI: Ignore _CRS on Supermicro X8DTH-i/6/iF/6F
  PCI: designware: Check for iATU unroll only on platforms that use ATU
2017-01-19 09:59:46 -08:00
Linus Torvalds
2ed5e5af2f Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:

 - regression fix for generic Wacom devices, from Jason Gerecke

 - DMA-on-stack fixes for hid-corsair driver, from Johan Hovold

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: wacom: Fix sibling detection regression
  HID: corsair: fix control-transfer error handling
  HID: corsair: fix DMA buffers on stack
2017-01-19 09:49:58 -08:00
Linus Torvalds
4a1cc2e879 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull two s390 bug fixes from Martin Schwidefsky:
 "Two changes, the first is a fix to add a missing memory clobber to the
  inline assembly to load control registers. This has not caused any
  issues so far, but who knows what code gcc will generate in future
  versions.

  The second change is an update for the default configurations. This
  includes CONFIG_BUG_ON_DATA_CORRUPTION=y, we want this to be enabled
  for s390. The usual approach to debug problems on production systems
  is to use crash on a system dump and for us avoiding data corruptions
  is priority one"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390: update defconfigs
  s390/ctl_reg: make __ctl_load a full memory barrier
2017-01-19 09:46:10 -08:00
Linus Torvalds
0866757790 xen: fix for 4.10 rc4
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Merge tag 'for-linus-4.10-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fix from Juergen Gross:
 "A fix for Xen running in nested virtualization environment"

* tag 'for-linus-4.10-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  partially revert "xen: Remove event channel notification through Xen PCI platform device"
2017-01-19 09:38:27 -08:00
Mark Rutland
7d9e8f71b9 arm64: avoid returning from bad_mode
Generally, taking an unexpected exception should be a fatal event, and
bad_mode is intended to cater for this. However, it should be possible
to contain unexpected synchronous exceptions from EL0 without bringing
the kernel down, by sending a SIGILL to the task.

We tried to apply this approach in commit 9955ac47f4 ("arm64:
don't kill the kernel on a bad esr from el0"), by sending a signal for
any bad_mode call resulting from an EL0 exception.

However, this also applies to other unexpected exceptions, such as
SError and FIQ. The entry paths for these exceptions branch to bad_mode
without configuring the link register, and have no kernel_exit. Thus, if
we take one of these exceptions from EL0, bad_mode will eventually
return to the original user link register value.

This patch fixes this by introducing a new bad_el0_sync handler to cater
for the recoverable case, and restoring bad_mode to its original state,
whereby it calls panic() and never returns. The recoverable case
branches to bad_el0_sync with a bl, and returns to userspace via the
usual ret_to_user mechanism.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Fixes: 9955ac47f4 ("arm64: don't kill the kernel on a bad esr from el0")
Reported-by: Mark Salter <msalter@redhat.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-19 15:38:22 +00:00
Jason Gerecke
a9ce7856ca HID: wacom: Fix sibling detection regression
Commit 345857b ("HID: wacom: generic: Add support for sensor offsets") included
a change to the operation and location of the call to 'wacom_add_shared_data'
in 'wacom_parse_and_register'. The modifications included moving it higher up
so that it would occur before the call to 'wacom_retrieve_hid_descriptor'. This
was done to prevent a crash that would have occured when the report containing
tablet offsets was fed into the driver with 'wacom_hid_report_raw_event'
(specifically: the various 'wacom_wac_*_report' functions were written with the
assumption that they would only be called once tablet setup had completed;
'wacom_wac_pen_report' in particular dereferences 'shared' which wasn't yet
allocated).

Moving the call to 'wacom_add_shared_data' effectively prevented the crash but
also broke the sibiling detection code which assumes that the HID descriptor
has been read and the various device_type flags set.

To fix this situation, we restore the original 'wacom_add_shared_data'
operation and location and instead implement an alternative change that can
also prevent the crash. Specifically, we notice that the report functions
mentioned above expect to be called only for input reports.  By adding a check,
we can prevent feature reports (such as the offset report) from
causing trouble.

Fixes: 345857bb49 ("HID: wacom: generic: Add support for sensor offsets")
Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Tested-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2017-01-19 14:19:25 +01:00
Masahiro Yamada
df1539c25c pinctrl: uniphier: fix Ethernet (RMII) pin-mux setting for LD20
Fix the pin-mux values for the MDC, MDIO, MDIO_INTL, PHYRSTL pins.

Fixes: 1e359ab128 ("pinctrl: uniphier: add Ethernet pin-mux settings")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-01-19 10:36:40 +01:00
Martin Blumenstingl
b27e36482c pinctrl: meson: fix uart_ao_b for GXBB and GXL/GXM
The GXBB and GXL/GXM pinctrl drivers had a configuration which conflicts
with uart_ao_a. According to the GXBB ("S905") datasheet the AO UART
functions are:
- GPIOAO_0: Func1 = UART_TX_AO_A (bit 12), Func2 = UART_TX_AO_B (bit 26)
- GPIOAO_1: Func1 = UART_RX_AO_A (bit 11), Func2 = UART_RX_AO_B (bit 25)
- GPIOAO_4: Func2 = UART_TX_AO_B (bit 24)
- GPIOAO_5: Func2 = UART_RX_AO_B (bit 25)

The existing definition for uart_AO_A already uses GPIOAO_0 and GPIOAO_1.
The old definition of uart_AO_B however was broken, as it used GPIOAO_0
for TX (which would be fine) and two pins (GPIOAO_1 and GPIOAO_5) for RX
(which does not make any sense).

This fixes the uart_AO_B configuration by moving it to GPIOAO_4 and
GPIOAO_5 (it would be possible to use GPIOAO_0 and GPIOAO_1 in theory,
but all existing hardware uses uart_AO_A there).
The fix for GXBB and GXL/GXM is identical since it seems that these
specific pins are identical on both SoC variants.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-01-19 10:36:25 +01:00
Linus Walleij
739e6f5945 gpio: provide lockdep keys for nested/unnested irqchips
The helper function for adding a GPIO chip compiles in a lockdep
key for debugging, the same key is needed for nested chips as
well.

The macro construction is unreadable, replace this with two
static inlines instead.

The _gpiochip_irqchip_add prefixed function is not helpful,
rename it with gpiochip_irqchip_add_key() that tell us what the
function is actually doing.

Fixes: d245b3f9bd ("gpio: simplify adding threaded interrupts")
Cc: Roger Quadros <rogerq@ti.com>
Reported-by: Clemens Gruber <clemens.gruber@pqgruber.com>
Reported-by: Roger Quadros <rogerq@ti.com>
Reported-by: Grygorii Strashko <grygorii.strashko@ti.com>
Tested-by: Clemens Gruber <clemens.gruber@pqgruber.com>
Tested-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-01-19 09:57:20 +01:00
Vineet Gupta
d0e73e2ac6 ARC: Revert "ARC: mm: IOC: Don't enable IOC by default"
The programming model has been fixed with prev patches so re-enable it
by default

This reverts commit 23cb1f6440.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-01-18 19:21:06 -08:00
Vineet Gupta
76894a72a0 ARC: mm: split arc_cache_init to allow __init reaping of bulk
arc_cache_init() is called for each core so can't be tagged __init.
However bulk of it is only executed by master core and thus is candidate
for __init reaping.

So split it up to allow that.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-01-18 19:21:02 -08:00
Olof Johansson
e47a8b1729 Fixes for omaps for v4.10-rc cycle. Mostly a DMA regression fix for
omap1, and then a handful of trivial fixes for boards and devices to
 work:
 
 - Fixes TI wilink bluetooth strange platform data baud rate
 
 - Remove duplicate pinmux line for am335x-icev2
 
 - Fix omap1 dma regression
 
 - Fix uninitialized return value for wkup_m3_ipc_probe()
 
 - Fix Ethernet PHY binding typo for dra72-evm
 
 - Fix init for omap5 and dra7 sata ports
 
 - Fix mmc card detect pin for Logic PD SOM-LV
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Merge tag 'omap-for-v4.10/fixes-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Fixes for omaps for v4.10-rc cycle. Mostly a DMA regression fix for
omap1, and then a handful of trivial fixes for boards and devices to
work:

- Fixes TI wilink bluetooth strange platform data baud rate
- Remove duplicate pinmux line for am335x-icev2
- Fix omap1 dma regression
- Fix uninitialized return value for wkup_m3_ipc_probe()
- Fix Ethernet PHY binding typo for dra72-evm
- Fix init for omap5 and dra7 sata ports
- Fix mmc card detect pin for Logic PD SOM-LV

* tag 'omap-for-v4.10/fixes-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: omap3: Fix Card Detect and Write Protect on Logic PD SOM-LV
  ARM: dts: OMAP5 / DRA7: indicate that SATA port 0 is available.
  ARM: dts: dra72-evm-revc: fix typo in ethernet-phy node
  soc: ti: wkup_m3_ipc: Fix error return code in wkup_m3_ipc_probe()
  ARM: OMAP1: DMA: Correct the number of logical channels
  ARM: dts: am335x-icev2: Remove the duplicated pinmux setting
  ARM: OMAP2+: Fix WL1283 Bluetooth Baud Rate

Signed-off-by: Olof Johansson <olof@lixom.net>
2017-01-18 16:11:03 -08:00
Vineet Gupta
e497c8e52a ARCv2: IOC: Use actual memory size to setup aperture size
vs. fixed 512M before.

But this still assumes that all of memory is under IOC which may not be
true for the SoC. Improve that later when this becomes a real issue, by
specifying this from DT.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-01-18 14:52:43 -08:00
Vineet Gupta
8c47f83ba4 ARCv2: IOC: Adhere to progamming model guidelines to avoid DMA corruption
On AXS103 release bitfiles, DMA data corruptions were seen because IOC
setup was not following the recommended way in documentation.

Flipping IOC on when caches are enabled or coherency transactions are in
flight, might cause some of the memory operations to not observe
coherency as expected.

So strictly follow the programming model recommendations as documented
in comment header above arc_ioc_setup()

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-01-18 14:48:33 -08:00
Vineet Gupta
d4911cdd32 ARCv2: IOC: refactor the IOC and SLC operations into own functions
- Move IOC setup into arc_ioc_setup()
 - Move SLC disabling into arc_slc_disable()

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-01-18 14:35:10 -08:00
Keith Busch
88a7503376 blk-mq: Remove unused variable
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-18 15:14:15 -07:00
Linus Torvalds
fb1d8e0e2c This pull request contains fixes for UBIFS:
- A long standing issue in UBIFS journal replay code
 - Fallout from the merge window
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Merge tag 'upstream-4.10-rc5' of git://git.infradead.org/linux-ubifs

Pull UBIFS fixes from Richard Weinberger:
 "This contains fixes for UBIFS:

   - a long standing issue in UBIFS journal replay code

   - fallout from the merge window"

* tag 'upstream-4.10-rc5' of git://git.infradead.org/linux-ubifs:
  ubifs: Fix journal replay wrt. xattr nodes
  ubifs: remove redundant checks for encryption key
  ubifs: allow encryption ioctls in compat mode
  ubifs: add CONFIG_BLOCK dependency for encryption
  ubifs: fix unencrypted journal write
  ubifs: ensure zero err is returned on successful return
2017-01-18 13:58:38 -08:00
Arnd Bergmann
fd29f7af75 xfs: fix xfs_mode_to_ftype() prototype
A harmless warning just got introduced:

fs/xfs/libxfs/xfs_dir2.h:40:8: error: type qualifiers ignored on function return type [-Werror=ignored-qualifiers]

Removing the 'const' modifier avoids the warning and has no
other effect.

Fixes: 1fc4d33fed ("xfs: replace xfs_mode_to_ftype table with switch statement")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2017-01-18 12:39:21 -08:00
Linus Torvalds
fa19a769f8 Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
 "A few ARM fixes:

   - fix a crash while performing TLB maintanence on early ARM SMP cores

   - blacklist Scorpion CPUs for hardware breakpoints

   - ARMs asm/types.h has been included as part of the UAPI due to the
     way the makefiles work, move it to uapi/asm/types.h to make it
     official

   - fix up ftrace syscall name matching"

* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: 8613/1: Fix the uaccess crash on PB11MPCore
  MAINTAINERS: update rmk's entries
  ARM: put types.h in uapi
  ARM: 8634/1: hw_breakpoint: blacklist Scorpion CPUs
  ARM: 8632/1: ftrace: fix syscall name matching
2017-01-18 11:19:32 -08:00
Vineet Gupta
eb1357d942 ARC: module: Fix !CONFIG_ARC_DW2_UNWIND builds
commit d65283f7b6 added mod->arch.secstr under
CONFIG_ARC_DW2_UNWIND, but used it unconditionally which broke builds
when the option was disabled. Fix that by adjusting the #ifdef guard.

And while at it add a missing guard (for unwinder) in module.c as well

Reported-by: Waldemar Brodkorb <wbx@openadk.org>
Cc: stable@vger.kernel.org    #4.9
Fixes: d65283f7b6 ("ARC: module: elide loop to save reference to .eh_frame")
Tested-by: Anton Kolesov <akolesov@synopsys.com>
Reviewed-by: Alexey Brodkin <abrodkin@synopsys.com>
[abrodkin: provided fixlet to Kconfig per failure in allnoconfig build]
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-01-18 11:17:44 -08:00
Linus Torvalds
ca92e6c7e6 Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull SMP hotplug update from Thomas Gleixner:
 "This contains a trivial typo fix and an extension to the core code for
  dynamically allocating states in the prepare stage.

  The extension is necessary right now because we need a proper way to
  unbreak LTTNG, which iscurrently non functional due to the removal of
  the notifiers. Surely it's out of tree, but it's widely used by
  distros.

  The simple solution would have been to reserve a state for LTTNG, but
  I'm not fond about unused crap in the kernel and the dynamic range,
  which we admittedly should have done right away, allows us to remove
  quite some of the hardcoded states, i.e. those which have no ordering
  requirements. So doing the right thing now is better than having an
  smaller intermediate solution which needs to be reworked anyway"

* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  cpu/hotplug: Provide dynamic range for prepare stage
  perf/x86/amd/ibs: Fix typo after cleanup state names in cpu/hotplug
2017-01-18 11:13:41 -08:00
Linus Torvalds
0b75f821ec Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Ingo Molnar:
 "Fix a crash in the ARM-Exynos clocksource driver, triggered by CPU
  hotplug operations"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource/exynos_mct: Clear interrupt when cpu is shut down
2017-01-18 11:12:13 -08:00
Linus Torvalds
49b550fee8 Merge branch 'rcu-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU fixes from Ingo Molnar:
 "This fixes sporadic ACPI related hangs in synchronize_rcu() that were
  caused by the ACPI code mistakenly relying on an aspect of RCU that
  was neither promised to work nor reliable but which happened to work -
  until in v4.9 we changed the RCU implementation, which made the hangs
  more prominent.

  Since the mis-use of the RCU facility wasn't properly detected and
  prevented either, these fixes make the RCU side work reliably instead
  of working around the problem in the ACPI code.

  Hence the slightly larger diffstat that goes beyond the normal scope
  of RCU fixes in -rc kernels"

* 'rcu-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rcu: Narrow early boot window of illegal synchronous grace periods
  rcu: Remove cond_resched() from Tiny synchronize_sched()
2017-01-18 10:47:11 -08:00
Linus Torvalds
9da96f99f1 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "An Intel PMU driver hotplug fix and three 'perf probe' tooling fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Handle exclusive threadid correctly on CPU hotplug
  perf probe: Fix to probe on gcc generated functions in modules
  perf probe: Add error checks to offline probe post-processing
  perf probe: Fix to show correct locations for events on modules
2017-01-18 10:45:22 -08:00
Dave Martin
ad9e202aa1 arm64/ptrace: Reject attempts to set incomplete hardware breakpoint fields
We cannot preserve partial fields for hardware breakpoints, because
the values written by userspace to the hardware breakpoint
registers can't subsequently be recovered intact from the hardware.

So, just reject attempts to write incomplete fields with -EINVAL.

Cc: <stable@vger.kernel.org> # 3.7.x-
Fixes: 478fcb2cdb ("arm64: Debugging support")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-18 18:05:12 +00:00
Dave Martin
aeb1f39d81 arm64/ptrace: Avoid uninitialised struct padding in fpr_set()
This patch adds an explicit __reserved[] field to user_fpsimd_state
to replace what was previously unnamed padding.

This ensures that data in this region are propagated across
assignment rather than being left possibly uninitialised at the
destination.

Cc: <stable@vger.kernel.org> # 3.7.x-
Fixes: 60ffc30d56 ("arm64: Exception handling")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-18 18:05:10 +00:00
Dave Martin
a672401c00 arm64/ptrace: Preserve previous registers for short regset write
Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.

Cc: <stable@vger.kernel.org> # 4.3.x-
Fixes: 5d220ff942 ("arm64: Better native ptrace support for compat tasks")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-18 18:05:08 +00:00
Dave Martin
9dd73f72f2 arm64/ptrace: Preserve previous registers for short regset write
Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.

Cc: <stable@vger.kernel.org> # 3.19.x-
Fixes: 766a85d7bc ("arm64: ptrace: add NT_ARM_SYSTEM_CALL regset")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-18 18:05:06 +00:00
Dave Martin
9a17b876b5 arm64/ptrace: Preserve previous registers for short regset write
Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.

Cc: <stable@vger.kernel.org> # 3.7.x-
Fixes: 478fcb2cdb ("arm64: Debugging support")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Acked-by: Will Deacon <Will.Deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-18 18:05:02 +00:00
Jeff Layton
6df8c9d80a ceph: fix bad endianness handling in parse_reply_info_extra
sparse says:

    fs/ceph/mds_client.c:291:23: warning: restricted __le32 degrades to integer
    fs/ceph/mds_client.c:293:28: warning: restricted __le32 degrades to integer
    fs/ceph/mds_client.c:294:28: warning: restricted __le32 degrades to integer
    fs/ceph/mds_client.c:296:28: warning: restricted __le32 degrades to integer

The op value is __le32, so we need to convert it before comparing it.

Cc: stable@vger.kernel.org # needs backporting for < 3.14
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2017-01-18 17:58:45 +01:00
Jeff Layton
fe2ed42517 ceph: fix endianness bug in frag_tree_split_cmp
sparse says:

    fs/ceph/inode.c:308:36: warning: incorrect type in argument 1 (different base types)
    fs/ceph/inode.c:308:36:    expected unsigned int [unsigned] [usertype] a
    fs/ceph/inode.c:308:36:    got restricted __le32 [usertype] frag
    fs/ceph/inode.c:308:46: warning: incorrect type in argument 2 (different base types)
    fs/ceph/inode.c:308:46:    expected unsigned int [unsigned] [usertype] b
    fs/ceph/inode.c:308:46:    got restricted __le32 [usertype] frag

We need to convert these values to host-endian before calling the
comparator.

Fixes: a407846ef7 ("ceph: don't assume frag tree splits in mds reply are sorted")
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2017-01-18 17:58:45 +01:00
Jeff Layton
1097680d75 ceph: fix endianness of getattr mask in ceph_d_revalidate
sparse says:

    fs/ceph/dir.c:1248:50: warning: incorrect type in assignment (different base types)
    fs/ceph/dir.c:1248:50:    expected restricted __le32 [usertype] mask
    fs/ceph/dir.c:1248:50:    got int [signed] [assigned] mask

Fixes: 200fd27c8f ("ceph: use lookup request to revalidate dentry")
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2017-01-18 17:58:45 +01:00
Ilya Dryomov
124f930b8c libceph: make sure ceph_aes_crypt() IV is aligned
... otherwise the crypto stack will align it for us with a GFP_ATOMIC
allocation and a memcpy() -- see skcipher_walk_first().

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2017-01-18 17:58:45 +01:00
Yan, Zheng
6e09d0fb64 ceph: fix ceph_get_caps() interruption
Commit 5c341ee328 ("ceph: fix scheduler warning due to nested
blocking") causes infinite loop when process is interrupted.  Fix it.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2017-01-18 17:58:45 +01:00
Ruslan Ruslichenko
020eb3daab x86/ioapic: Restore IO-APIC irq_chip retrigger callback
commit d32932d02e removed the irq_retrigger callback from the IO-APIC
chip and did not add it to the new IO-APIC-IR irq chip.

Unfortunately the software resend fallback is not enabled on X86, so edge
interrupts which are received during the lazy disabled state of the
interrupt line are not retriggered and therefor lost.

Restore the callbacks.

[ tglx: Massaged changelog ]

Fixes: d32932d02e  ("x86/irq: Convert IOAPIC to use hierarchical irqdomain interfaces")
Signed-off-by: Ruslan Ruslichenko <rruslich@cisco.com>
Cc: xe-linux-external@cisco.com
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1484662432-13580-1-git-send-email-rruslich@cisco.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-01-18 15:37:28 +01:00
Ville Syrjälä
3bfdfdcbce drm/i915: Ignore bogus plane coordinates on SKL when the plane is not visible
When the plane is invisible we may have all sorts of bogus stuff
in the coordinates, which we must ignore or else we might fail the
plane update. This started to happen on SKL when I moved the plane
offset computation to happen in the check phase. Previously we
happily ignored it all since we never called the update_plane hook
with an invisible plane.

Cc: Sivakumar Thulasimani <sivakumar.thulasimani@intel.com>
Cc: drm-intel-fixes@lists.freedesktop.org
Fixes: b63a16f6cd ("drm/i915: Compute display surface offset in the plane check hook for SKL+")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98258
Testcase: igt/pm_rpm/legacy-planes
Testcase: igt/pm_rpm/universal-planes
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1478550057-24864-3-git-send-email-ville.syrjala@linux.intel.com
(cherry picked from commit a5e4c7d0aa)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2017-01-18 16:31:25 +02:00
Francisco Jerez
4fc020d864 drm/i915: Remove WaDisableLSQCROPERFforOCL KBL workaround.
The WaDisableLSQCROPERFforOCL workaround has the side effect of
disabling an L3SQ optimization that has huge performance implications
and is unlikely to be necessary for the correct functioning of usual
graphic workloads.  Userspace is free to re-enable the workaround on
demand, and is generally in a better position to determine whether the
workaround is necessary than the DRM is (e.g. only during the
execution of compute kernels that rely on both L3 fences and HDC R/W
requests).

The same workaround seems to apply to BDW (at least to production
stepping G1) and SKL as well (the internal workaround database claims
that it does for all steppings, while the BSpec workaround table only
mentions pre-production steppings), but the DRM doesn't do anything
beyond whitelisting the L3SQCREG4 register so userspace can enable it
when it sees fit.  Do the same on KBL platforms.

Improves performance of the GFXBench4 gl_manhattan31 benchmark by 60%,
and gl_4 (AKA car chase) by 14% on a KBL GT2 running Mesa master --
This is followed by a regression of 35% and 10% respectively for the
same benchmarks and platform caused by my recent patch series
switching userspace to use the dataport constant cache instead of the
sampler to implement uniform pull constant loads, which caused us to
hit more heavily the L3 cache (and on platforms other than KBL had the
opposite effect of improving performance of the same two benchmarks).
The overall effect on KBL of this change combined with the recent
userspace change is respectively 4.6% and 2.6%.  SynMark2 OglShMapPcf
was affected by the constant cache changes (though it improved as it
did on other platforms rather than regressing), but is not
significantly affected by this patch (with statistical significance of
5% and sample size 20).

v2: Drop some more code to avoid unused variable warning.

Fixes: 738fa1b312 ("drm/i915/kbl: Add WaDisableLSQCROPERFforOCL")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99256
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Cc: Matthew Auld <matthew.william.auld@gmail.com>
Cc: Eero Tamminen <eero.t.tamminen@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@intel.com>
Cc: beignet@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v4.7+
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
[Removed double Fixes tag]
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1484217894-20505-1-git-send-email-mika.kuoppala@intel.com
(cherry picked from commit 8726f2faa3)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2017-01-18 16:31:11 +02:00
Amir Goldstein
4c7d0c9cb7 ovl: fix possible use after free on redirect dir lookup
ovl_lookup_layer() iterates on path elements of d->name.name
but also frees and allocates a new pointer for d->name.name.

For the case of lookup in upper layer, the initial d->name.name
pointer is stable (dentry->d_name), but for lower layers, the
initial d->name.name can be d->redirect, which can be freed during
iteration.

[SzM]
Keep the count of remaining characters in the redirect path and calculate
the current position from that.  This works becuase only the prefix is
modified, the ending always stays the same.

Fixes: 02b69b284c ("ovl: lookup redirects")
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2017-01-18 15:19:54 +01:00
Oleksandr Andrushchenko
1c8a946bf3 arm64: mm: avoid name clash in __page_to_voff()
The arm64 __page_to_voff() macro takes a parameter called 'page', and
also refers to 'struct page'. Thus, if the value passed in is not
called 'page', we'll refer to the wrong struct name (which might not
exist).

Fixes: 3fa72fe9c6 ("arm64: mm: fix __page_to_voff definition")
Acked-by: Mark Rutland <mark.rutland@arm.com>
Suggested-by: Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Signed-off-by: Oleksandr Andrushchenko <Oleksandr_Andrushchenko@epam.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2017-01-18 11:24:04 +00:00
Tobias Klauser
0fec9557fd cpu/hotplug: Remove unused but set variable in _cpu_down()
After the recent removal of the hotplug notifiers the variable 'hasdied' in
_cpu_down() is set but no longer read, leading to the following GCC warning
when building with 'make W=1':

  kernel/cpu.c:767:7: warning: variable ‘hasdied’ set but not used [-Wunused-but-set-variable]

Fix it by removing the variable.

Fixes: 530e9b76ae ("cpu/hotplug: Remove obsolete cpu hotplug register/unregister functions")
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20170117143501.20893-1-tklauser@distanz.ch
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2017-01-18 11:55:09 +01:00
Madhavan Srinivasan
27593d72c4 powerpc/perf: Use MSR to report privilege level on P9 DD1
SIER and SIAR are not updated correctly for some samples, so force the
use of MSR and regs->nip instead for misc_flag updates. This is done by
adding a new ppmu flag and updating the use_siar logic in
perf_read_regs() to use it, and dropping the PPMU_HAS_SIER flag.

Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
[mpe: Rename flag to PPMU_NO_SIAR, and also drop PPMU_HAS_SIER]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-18 16:15:58 +11:00
Madhavan Srinivasan
df21d2fa73 selftest/powerpc: Wrong PMC initialized in pmc56_overflow test
Test uses PMC2 to count the event. But PMC1 is being initialized.
Patch to fix it.

Fixes: 3752e453f6 ('selftests/powerpc: Add tests of PMU EBBs')
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-18 16:03:34 +11:00
Gavin Shan
387bbc974f powerpc/eeh: Enable IO path on permanent error
We give up recovery on permanent error, simply shutdown the affected
devices and remove them. If the devices can't be put into quiet state,
they spew more traffic that is likely to cause another unexpected EEH
error. This was observed on "p8dtu2u" machine:

   0002:00:00.0 PCI bridge: IBM Device 03dc
   0002:01:00.0 Ethernet controller: Intel Corporation \
                Ethernet Controller X710/X557-AT 10GBASE-T (rev 02)
   0002:01:00.1 Ethernet controller: Intel Corporation \
                Ethernet Controller X710/X557-AT 10GBASE-T (rev 02)
   0002:01:00.2 Ethernet controller: Intel Corporation \
                Ethernet Controller X710/X557-AT 10GBASE-T (rev 02)
   0002:01:00.3 Ethernet controller: Intel Corporation \
                Ethernet Controller X710/X557-AT 10GBASE-T (rev 02)

On P8 PowerNV platform, the IO path is frozen when shutdowning the
devices, meaning the memory registers are inaccessible. It is why
the devices can't be put into quiet state before removing them.
This fixes the issue by enabling IO path prior to putting the devices
into quiet state.

Reported-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com>
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Acked-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-18 15:11:19 +11:00
Madhavan Srinivasan
d89f473ff6 powerpc/perf: Fix PM_BRU_CMPL event code for power9
Use 0x10012 event code for PM_BRU_CMPL event in power9 event list
instead of current 0x40060.

Fixes: 34922527a2 ('powerpc/perf: Add power9 event list macros for generic and cache events')
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-18 11:58:51 +11:00
Aneesh Kumar K.V
20717e1ff5 powerpc/mm: Fix little-endian 4K hugetlb
When we switched to big endian page table, we never updated the hugepd
format such that it can work for both big endian and little endian
config. This patch series update hugepd format such that it is looked at
as __be64 value in big endian page table config.

This patch also switch hugepd_t.pd from signed long to unsigned long.
I did update the FSL hugepd_ok check to check for the top bit instead
of checking > 0.

Fixes: 5dc1ef858c ("powerpc/mm: Use big endian Linux page tables for book3s 64")
Cc: stable@vger.kernel.org # v4.7+
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-18 11:58:50 +11:00
Aneesh Kumar K.V
ff8b85796d powerpc/mm/hugetlb: Don't panic when we don't find the default huge page size
The generic hugetlbfs code can handle not finding the default huge page
size correctly. With HPAGE_SHIFT = 0 we see in dmesg:

  hugetlbfs: disabling because there are no supported hugepage sizes

bash-4.2# echo 30 > /proc/sys/vm/nr_hugepages
bash: echo: write error: Operation not supported

Fixes: 03bb2d6590 ("powerpc: get hugetlbpage handling more generic")
Reported-by: Chris Smart <chris@distroguy.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-18 11:58:50 +11:00
Nicholas Piggin
bf5ca68dd2 powerpc: Fix pgtable pmd cache init
Commit 9b081e1080 ("powerpc: port 64 bits pgtable_cache to 32 bits")
mixed up PMD_INDEX_SIZE and PMD_CACHE_INDEX a couple of times. This
resulted in 64s/hash/4k configs to panic at boot with a false positive
error check.

Fix that and simplify error handling by moving the check to the caller.

Fixes: 9b081e1080 ("powerpc: port 64 bits pgtable_cache to 32 bits")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-01-18 11:58:30 +11:00
Linus Torvalds
0aa0313f9d Modules fixes for v4.10-rc5
- Fix out-of-tree module breakage when it supplies its own
   definitions of true and false
 
 Signed-off-by: Jessica Yu <jeyu@redhat.com>
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Merge tag 'modules-for-v4.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux

Pull modules fix from Jessica Yu:

 - fix out-of-tree module breakage when it supplies its own definitions
   of true and false

* tag 'modules-for-v4.10-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux:
  taint/module: Fix problems when out-of-kernel driver defines true or false
2017-01-17 14:49:21 -08:00
James Bottomley
9208b75e04 Merge remote-tracking branch 'mkp-scsi/fixes' into fixes 2017-01-17 17:32:54 -05:00