The Atmel sdhci device needs the
SDHCI_QUIRK2_NEED_DELAY_AFTER_INT_CLK_RST quirk. Without it, the
internal clock could never stabilised when changing the sd clock
frequency.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The Atmel sdhci device needs a new quirk. sdhci_set_clock set the Clock
Control Register to 0 before computing the new value and writing it.
It disables the internal clock which causes a reset mecanism. If we
write the new value before this reset mecanism is done, it will prevent
the stabilisation of the internal clock, so a delay is needed. This
delay is about 2-3 cycles of the base clock. To be safe, a 1 ms delay is
used.
Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
In case of armada_38x_quirks error, all clocks should be cleaned-up, same
as after mv_conf_mbus_windows failure.
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Cc: <stable@vger.kernel.org> # v4.2
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
According to 'FE-2946959' erratum the clock inversion option is
needed to support slow frequencies when the card input hold time
requirement is high. This setting is not required for high speed
MMC and might cause timing violation.
Signed-off-by: Nadav Haklai <nadavh@marvell.com>
Cc: <stable@vger.kernel.org> # v4.2
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
shci-pxav3 driver is enabling by default the
SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN quirk. However this quirk is not
required for Armada 38x and leads to wrong clock setting in the divider.
Signed-off-by: Nadav Haklai <nadavh@marvell.com>
Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Cc: <stable@vger.kernel.org> # v4.2
Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
For some reason, only the little-endian flavor of
powerpc provided the zero_bytemask() implementation.
Reported-by: Michal Sojka <sojkam1@fel.cvut.cz>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
We need to explicitly check the AVX and AES CPU features, as we can't
infer them from the related XSAVE feature flags. For example, the
Core i3 2310M passes the XSAVE feature test but does not implement
AES-NI.
Reported-and-tested-by: Stéphane Glondu <glondu@debian.org>
References: https://bugs.debian.org/800934
Fixes: ce4f5f9b65 ("x86/fpu, crypto x86/camellia_aesni_avx: Simplify...")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: stable <stable@vger.kernel.org> # 4.2
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Some of the crypto algorithms write to the initialization vector,
but no space has been allocated for it. This clobbers adjacent memory.
Cc: stable@vger.kernel.org
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Starting with commit 7d607f9170 ("mmc: host: omap_hsmmc: use
devm_regulator_get_optional() for vmmc") MMC on omap3 stopped working
for legacy booting.
This is because legacy booting sets up some of the resource in the
platform init code, and for optional regulators always seem to
return -EPROBE_DEFER for the legacy booting.
Let's fix the issue by checking for device tree based booting for
now. Then when omap3 boots in device tree only mode, this patch
can be just reverted.
Fixes: 7d607f9170 ("mmc: host: omap_hsmmc: use
devm_regulator_get_optional() for vmmc")
Cc: Felipe Balbi <balbi@ti.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This reverts commit c55d7a0553.
Without reverting this commit we get "unbalanced disables for pbias_mmc_omap4"
errors on omap4430. It seems that 4430 and 4460 behave in a different way for
the PBIAS regulator registers and until that has been debugged further we
cannot rely on the regulator status registers in hardare on 4430.
Fixes: 7d607f9170 ("mmc: host: omap_hsmmc: use
devm_regulator_get_optional() for vmmc")
Cc: Felipe Balbi <balbi@ti.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Nishanth Menon <nm@ti.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Most distributions end up enabling SWIOTLB already with 32-bit
kernels due to the combination of CONFIG_HYPERVISOR_GUEST|CONFIG_XEN=y
as those end up requiring the SWIOTLB.
However for those that are not interested in virtualization and
run in 32-bit they will discover that: "32-bit PAE 4.2.0 kernel
(no IOMMU code) would hang when writing to my USB disk. The kernel
spews million(-ish messages per sec) to syslog, effectively
"hanging" userspace with my kernel.
Oct 2 14:33:06 voodoochild kernel: [ 223.287447] nommu_map_sg:
overflow 25dcac000+1024 of device mask ffffffff
Oct 2 14:33:06 voodoochild kernel: [ 223.287448] nommu_map_sg:
overflow 25dcac000+1024 of device mask ffffffff
Oct 2 14:33:06 voodoochild kernel: [ 223.287449] nommu_map_sg:
overflow 25dcac000+1024 of device mask ffffffff
... etc ..."
Enabling it makes the problem go away.
N.B. With a6dfa128ce
"config: Enable NEED_DMA_MAP_STATE by default when SWIOTLB is selected"
we also have the important part of the SG macros enabled to make this
work properly - in case anybody wants to backport this patch.
Reported-and-Tested-by: Christian Melki <christian.melki@t2data.com>
Signed-off-by: Christian Melki <christian.melki@t2data.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Quite a few fixes here but they're all very small and driver specific,
none of them really stand out if you aren't using the relevant hardware
but they're all useful if you do happen to have an affected device.
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Merge tag 'asoc-fix-v4.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v4.3
Quite a few fixes here but they're all very small and driver specific,
none of them really stand out if you aren't using the relevant hardware
but they're all useful if you do happen to have an affected device.
3w controller don't dma map small single SGL entry commands but instead
bounce buffer them. Add a helper to identify these commands and don't
call scsi_dma_unmap for them.
Based on an earlier patch from James Bottomley.
Fixes: 118c85 ("3w-9xxx: fix command completion race")
Reported-by: Tóth Attila <atoth@atoth.sote.hu>
Tested-by: Tóth Attila <atoth@atoth.sote.hu>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
- A couple of locking fixes for RT kernels
- Avoid printing bogus initrd warnings when initrd isn't present
- Performance fix for random mmap file readahead
- Typo fix
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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:
"This addresses a couple of issues found with RT, a broken initrd
message in the console log and a simple performance fix for some MMC
workloads.
Summary:
- A couple of locking fixes for RT kernels
- Avoid printing bogus initrd warnings when initrd isn't present
- Performance fix for random mmap file readahead
- Typo fix"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: replace read_lock to rcu lock in call_break_hook
arm64: Don't relocate non-existent initrd
arm64: convert patch_lock to raw lock
arm64: readahead: fault retry breaks mmap file read random detection
arm64: debug: Fix typo in debug-monitors.c
* fbdev: Minor fixes to broadsheetfb, fsl-diu-fb, mb862xxfb, tridentfb, omapfb
* display-timing: Fix memory leak in error path
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Merge tag 'fbdev-fixes-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux
Pull fbdev fixes from Tomi Valkeinen:
- fbdev: Minor fixes to broadsheetfb, fsl-diu-fb, mb862xxfb, tridentfb,
omapfb
- display-timing: Fix memory leak in error path
* tag 'fbdev-fixes-4.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
video: of: fix memory leak
fbdev: broadsheetfb: fix memory leak
OMAPDSS: panel-sony-acx565akm: Export OF module alias information
fbdev: omap2: connector-dvi: use of_get_i2c_adapter_by_node interface
tridentfb: Fix set_lwidth on TGUI9440 and CYBER9320
tridentfb: fix hang on Blade3D with CONFIG_CC_OPTIMIZE_FOR_SIZE
video: fbdev: mb862xx: Fix module autoload for OF platform driver
video: fbdev: fsl: Fix the sleep function for FSL DIU module
- Fix build break on (at least) powerpc due to sample_reg_masks, not being
available for linking (Sukadev Bhattiprolu)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fix from Arnaldo Carvalho de Melo:
- Fix build break on (at least) powerpc due to sample_reg_masks, not being
available for linking. (Sukadev Bhattiprolu)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The new amdgpu driver passes a user space pointer in a 64-bit structure
member, which is the correct way to do it, but it attempts to
directly cast it to a __user pointer in the kernel, which causes
a warning in three places:
drm/amd/amdgpu/amdgpu_cs.c: In function 'amdgpu_cs_parser_init':
drm/amd/amdgpu/amdgpu_cs.c:180:21: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
chunk_array_user = (uint64_t __user *)(cs->in.chunks);
This changes all three to add an intermediate cast to 'unsigned long'
as other drivers do. This avoids the warning and works correctly on
both 32-bit and 64-bit architectures.
Fixes: e60b344f6c ("drm/amdgpu: optimize amdgpu_parser_init")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
perf_regs.c does not get built on Powerpc as CONFIG_PERF_REGS is false.
So the weak definition for 'sample_regs_masks' doesn't get picked up.
Adding perf_regs.o to util/Build unconditionally, exposes a redefinition
error for 'perf_reg_value()' function (due to the static inline version
in util/perf_regs.h). So use #ifdef HAVE_PERF_REGS_SUPPORT' around that
function.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: linuxppc-dev@ozlabs.org
Link: http://lkml.kernel.org/r/20150930182836.GA27858@us.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
A couple of fixes for the debugfs information on the register map,
fixing issues with very small reads potentially causing underflows and
wraparounds.
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Merge tag 'regmap-fix-v4.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fixes from Mark Brown:
"A couple of fixes for the debugfs information on the register map,
fixing issues with very small reads potentially causing underflows and
wraparounds"
* tag 'regmap-fix-v4.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: debugfs: Don't bother actually printing when calculating max length
regmap: debugfs: Ensure we don't underflow when printing access masks
A couple of very minor fixes, one for error handling in the Davinci
driver probe function and another making the Renesas sh-msiof DT binding
documentation correspond to what's actually implemented.
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Merge tag 'spi-fix-v4.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A couple of very minor fixes, one for error handling in the Davinci
driver probe function and another making the Renesas sh-msiof DT
binding documentation correspond to what's actually implemented"
* tag 'spi-fix-v4.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: sh-msiof: Match renesas,rx-fifo-size in DT bindings doc with driver
spi: davinci: fix handling platform_get_irq result
Two fixes here, one device specific fix for axp20x and a core fix for
cases where one regulator is supplying another which broke probe
deferral, substituting in a dummy regulator too aggressively.
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Merge tag 'regulator-fix-v4.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"Two fixes here, one device specific fix for axp20x and a core fix for
cases where one regulator is supplying another which broke probe
deferral, substituting in a dummy regulator too aggressively"
* tag 'regulator-fix-v4.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: core: Handle probe deferral from DT when resolving supplies
regulator: axp20x: Fix enable bit indexes for DCDC4 and DCDC5
If of_parse_display_timing() fails we are printing an error message and
jumping to the error path but we missed freeing "dt".
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Pull strscpy fixes from Chris Metcalf :
"This patch series fixes up a couple of architecture issues where
strscpy wasn't configured correctly (missing on h8300, duplicating
local and asm-generic copies on powerpc and tile).
It also adds a use of zero_bytemask() to the final store for strscpy
to avoid writing uninitialized data to the destination. However, to
make this work we had to add support for zero_bytemask() to the two
architectures that didn't have it (alpha and tile), because they were
providing their own local copies, but didn't provide the
zero_bytemask() that was previously only required when building with
CONFIG_DCACHE_WORD_ACCESS"
[ Side note: there is still no actual users of strscpy except for the
one preexisting use in arch/tile that predates the generic version.
So this is all about fixing the infrastructure so that we eventually
can start using it. - Linus ]
* 'strscpy' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
strscpy: zero any trailing garbage bytes in the destination
word-at-a-time.h: support zero_bytemask() on alpha and tile
word-at-a-time.h: fix some Kbuild files
* mxc_nand: a "refactoring only" change in 4.3-rc1 had some bad pointer
(array) arithmetic. Fix that
* sunxi_nand:
- Fix an old list manipulation / memory management bug in the device
release() code path
- Correct a few mistakes in OOB write support
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Merge tag 'for-linus-20151006' of git://git.infradead.org/linux-mtd
Pull MTD fixes from Brian Norris:
"A few MTD fixes:
- mxc_nand: a "refactoring only" change in 4.3-rc1 had some bad
pointer (array) arithmetic. Fix that
- sunxi_nand:
- Fix an old list manipulation / memory management bug in the device
release() code path
- Correct a few mistakes in OOB write support"
* tag 'for-linus-20151006' of git://git.infradead.org/linux-mtd:
mxc_nand: fix copy_spare
mtd: nand: sunxi: fix sunxi_nand_chips_cleanup()
mtd: nand: sunxi: fix OOB handling in ->write_xxx() functions
Highlights include:
Bugfixes:
- Fix a use-after-free bug in the RPC/RDMA client
- Fix a write performance regression
- Fix up page writeback accounting
- Don't try to reclaim unused state owners
- Fix a NFSv4 nograce recovery hang
- reset states to use open_stateid when returning delegation voluntarily
- Fix a tracepoint NULL-pointer dereference
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Merge tag 'nfs-for-4.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client bugfixes from Trond Myklebust:
"Highlights include:
Bugfixes:
- Fix a use-after-free bug in the RPC/RDMA client
- Fix a write performance regression
- Fix up page writeback accounting
- Don't try to reclaim unused state owners
- Fix a NFSv4 nograce recovery hang
- reset states to use open_stateid when returning delegation
voluntarily
- Fix a tracepoint NULL-pointer dereference"
* tag 'nfs-for-4.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFS: Fix a tracepoint NULL-pointer dereference
nfs4: reset states to use open_stateid when returning delegation voluntarily
NFSv4: Fix a nograce recovery hang
NFSv4.1: nfs4_opendata_check_deleg needs to handle NFS4_OPEN_CLAIM_DELEG_CUR_FH
NFSv4: Don't try to reclaim unused state owners
NFS: Fix a write performance regression
NFS: Fix up page writeback accounting
xprtrdma: disconnect and flush cqs before freeing buffers
This reverts commit 998ef75ddb.
The commit itself does not appear to be buggy per se, but it is exposing
a bug in ext4 (and Ted thinks ext3 too, but we solved that by getting
rid of it). It's too late in the release cycle to really worry about
this, even if Dave Hansen has a patch that may actually fix the
underlying ext4 problem. We can (and should) revisit this for the next
release.
The problem is that moving the prefaulting later now exposes a special
case with partially successful writes that isn't handled correctly. And
the prefaulting likely isn't normally even that much of a performance
issue - it looks like at least one reason Dave saw this in his
performance tests is that he also ran them on Skylake that now supports
the new SMAP code, which makes the normally very cheap user space
prefaulting noticeably more expensive.
Bisected-and-acked-by: Ted Ts'o <tytso@mit.edu>
Analyzed-and-acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
qxl_bo_unref calls drm_gem_object_unreference_unlocked which
locks dev->struct_mutex. However this lock could be already
locked if the call came from qxl_gem_object_free.
As we don't need to call qxl_bo_ref/qxl_bo_unref cause
qxl_release_list_add will hold a reference by itself avoid
to call them and the possible deadlock.
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This avoid a dependency lock error.
According to https://lwn.net/Articles/548909/ users of WW mutex API
should avoid using different context.
When a buffer is reserved with qxl_bo_reserve a ww_mutex_lock without
context is used. However during qxl_draw_dirty_fb different locks
with specific context are used.
This is detected during a machine booting with a debug kernel with lock
dependency checking enabled.
Like many other function in this file to avoid this problem object
pinning is used. Once the object is pinned is not necessary to keep
the lock so it can be released avoiding the locking problem.
Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Commit "c0fe07a drm/qxl: rewrite framebuffer support" has a bug in the
dirty rectangle tracking: Instead of ignoring an empty dirty rectangle
when adding a new dirty region the dirty region gets extended to the
upper left corner. Fix it.
Cc: linux-stable@vger.kernel.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Running xfstest generic/013 with the tracepoint nfs:nfs4_open_file
enabled produces a NULL-pointer dereference when calculating fileid and
filehandle of the opened file. Fix this by checking if state is NULL
before trying to use the inode pointer.
Reported-by: Olga Kornievskaia <aglo@umich.edu>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
It's possible that the destination can be shadowed in userspace
(as, for example, the perf buffers are now). So we should take
care not to leak data that could be inspected by userspace.
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
arch/tile added word-at-a-time.h after the patch that added generic-y
entries; the generic-y entry is now stale.
arch/h8300 is newer than the generic-y patch for word-at-a-time.h,
and needs a generic-y entry.
arch/powerpc seems to have gotten a generic-y entry by mistake in
the first patch; this change removes it.
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
When booting a kernel without an initrd, the kernel reports that it
moves -1 bytes worth, having gone through the motions with initrd_start
equal to initrd_end:
Moving initrd from [4080000000-407fffffff] to [9fff49000-9fff48fff]
Prevent this by bailing out early when the initrd size is zero (i.e. we
have no initrd), avoiding the confusing message and other associated
work.
Fixes: 1570f0d7ab ("arm64: support initrd outside kernel linear map")
Cc: Mark Salter <msalter@redhat.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
These have not been tested very extensively and generally
seem to be problematic. Mark them as experimental for now.
bug:
https://bugs.freedesktop.org/show_bug.cgi?id=92270
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
So the problem this patch is trying to address is as follows:
CPU0 CPU1
context_switch(A, B)
ttwu(A)
LOCK A->pi_lock
A->on_cpu == 0
finish_task_switch(A)
prev_state = A->state <-.
WMB |
A->on_cpu = 0; |
UNLOCK rq0->lock |
| context_switch(C, A)
`-- A->state = TASK_DEAD
prev_state == TASK_DEAD
put_task_struct(A)
context_switch(A, C)
finish_task_switch(A)
A->state == TASK_DEAD
put_task_struct(A)
The argument being that the WMB will allow the load of A->state on CPU0
to cross over and observe CPU1's store of A->state, which will then
result in a double-drop and use-after-free.
Now the comment states (and this was true once upon a long time ago)
that we need to observe A->state while holding rq->lock because that
will order us against the wakeup; however the wakeup will not in fact
acquire (that) rq->lock; it takes A->pi_lock these days.
We can obviously fix this by upgrading the WMB to an MB, but that is
expensive, so we'd rather avoid that.
The alternative this patch takes is: smp_store_release(&A->on_cpu, 0),
which avoids the MB on some archs, but not important ones like ARM.
Reported-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@vger.kernel.org> # v3.1+
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Cc: manfred@colorfullife.com
Cc: will.deacon@arm.com
Fixes: e4a52bcb9a ("sched: Remove rq->lock from the first half of ttwu()")
Link: http://lkml.kernel.org/r/20150929124509.GG3816@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Make sure we are not the root device before attempting to
read the pcie bridge registers to check the pcie gen speeed.
Fixes a crash when the device is passed through to a VM.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
end_clone_bio() is a endio callback for clone bio and should check
and save the clone's bi_error for error reporting. However,
4246a0b63b ("block: add a bi_error field to struct bio") changed
the function to check the original bio's bi_error, which is 0.
Without this fix, clone's error is ignored and reported to the
original request as success. Thus data corruption will be observed.
Fixes: 4246a0b63b ("block: add a bi_error field to struct bio")
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
- Fix VM save performance regression with x86 PV guests.
- Make kexec work in x86 PVHVM guests (if Xen has the soft-reset ABI).
- Other minor fixes.
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Merge tag 'for-linus-4.3b-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen bug fixes from David Vrabel:
- Fix VM save performance regression with x86 PV guests
- Make kexec work in x86 PVHVM guests (if Xen has the soft-reset ABI)
- Other minor fixes.
* tag 'for-linus-4.3b-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
x86/xen/p2m: hint at the last populated P2M entry
x86/xen: Do not clip xen_e820_map to xen_e820_map_entries when sanitizing map
x86/xen: Support kexec/kdump in HVM guests by doing a soft reset
xen/x86: Don't try to write syscall-related MSRs for PV guests
xen: use correct type for HYPERVISOR_memory_op()
Pull s390 fixes from Martin Schwidefsky:
"Three bug fixes and an update to the default configuration"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/defconfig: set SCSI_DH=y
s390/vtime: correct scaled cputime of partially idle CPUs
s390/boot/decompression: disable floating point in decompressor
s390/numa: use correct type for node_to_cpumask_map
The "fh_len" passed to ->fh_to_* is not guaranteed to be that same as
that returned by encode_fh - it may be larger.
With NFSv2, the filehandle is fixed length, so it may appear longer
than expected and be zero-padded.
So we must test that fh_len is at least some value, not exactly equal
to it.
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: David Sterba <dsterba@suse.cz>
After reading one of chunk or tree root tree's root node from disk, if the
root node does not have EXTENT_BUFFER_UPTODATE flag set, we fail to release
the memory used by the root node. Fix this.
Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Pull CIFS fixes from Steve French:
"Two fixes for problems pointed out by automated tools.
Thanks PaX/grsecurity team and Dan Carpenter (and the Smatch tool)"
* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
[CIFS] Update cifs version number
[SMB3] Do not fall back to SMBWriteX in set_file_size error cases
[SMB3] Missing null tcon check
With commit 633d6f17cd (x86/xen: prepare
p2m list for memory hotplug) the P2M may be sized to accomdate a much
larger amount of memory than the domain currently has.
When saving a domain, the toolstack must scan all the P2M looking for
populated pages. This results in a performance regression due to the
unnecessary scanning.
Instead of reporting (via shared_info) the maximum possible size of
the P2M, hint at the last PFN which might be populated. This hint is
increased as new leaves are added to the P2M (in the expectation that
they will be used for populated entries).
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Cc: <stable@vger.kernel.org> # 4.0+
ludovic.desroches@atmel.com