Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A small collection of fixes that should go into this series. This
contains:
- NVMe pull request from Christoph, with various fixes for nvme
proper and nvme-fc.
- disable runtime PM for blk-mq for now.
With scsi now defaulting to using blk-mq, this reared its head as
an issue. Longer term we'll fix up runtime PM for blk-mq, for now
just disable it to prevent a hang on laptop resume for some folks.
- blk-mq CPU <-> hw queue map fix from Christoph.
- xen/blkfront pull request from Konrad, with two small fixes for the
blkfront driver.
- a few fixups for nbd from Joseph.
- a stable fix for pblk from Javier"
* 'for-linus' of git://git.kernel.dk/linux-block:
lightnvm: pblk: advance bio according to lba index
nvme: validate admin queue before unquiesce
nbd: clear disconnected on reconnect
nvme-pci: fix HMB size calculation
nvme-fc: revise TRADDR parsing
nvme-fc: address target disconnect race conditions in fcp io submit
nvme: fabrics commands should use the fctype field for data direction
nvme: also provide a UUID in the WWID sysfs attribute
xen/blkfront: always allocate grants first from per-queue persistent grants
xen-blkfront: fix mq start/stop race
blk-mq: map queues to all present CPUs
block: disable runtime-pm for blk-mq
xen-blkfront: Fix handling of non-supported operations
nbd: only set sndtimeo if we have a timeout set
nbd: take tx_lock before disconnecting
nbd: allow multiple disconnects to be sent
Merge tag 'mmc-v4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"Here are a couple of mmc fixes intended for v4.13-rc1.
I have also included a couple of cleanup patches in this pull request
for OMAP2+, related to the omap_hsmmc driver. The reason is because of
the changes are also depending on OMAP SoC specific code, so this
simplifies how to deal with this.
Summary:
MMC host:
- sunxi: Correct time phase settings
- omap_hsmmc: Clean up some dead code
- dw_mmc: Fix message printed for deprecated num-slots DT binding
- dw_mmc: Fix DT documentation"
* tag 'mmc-v4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
Documentation: dw-mshc: deprecate num-slots
mmc: dw_mmc: fix the wrong condition check of getting num-slots from DT
mmc: host: omap_hsmmc: remove unused platform callbacks
ARM: OMAP2+: hsmmc.c: Remove dead code
mmc: sunxi: Keep default timing phase settings for new timing mode
workqueue: Work around edge cases for calc of pool's cpumask
There is an underlying assumption/trade-off in many layers of the Linux
system that CPU <-> node mapping is static. This is despite the presence
of features like NUMA and 'hotplug' that support the dynamic addition/
removal of fundamental system resources like CPUs and memory. PowerPC
systems, however, do provide extensive features for the dynamic change
of resources available to a system.
Currently, there is little or no synchronization protection around the
updating of the CPU <-> node mapping, and the export/update of this
information for other layers / modules. In systems which can change
this mapping during 'hotplug', like PowerPC, the information is changing
underneath all layers that might reference it.
This patch attempts to ensure that a valid, usable cpumask attribute
is used by the workqueue infrastructure when setting up new resource
pools. It prevents a crash that has been observed when an 'empty'
cpumask is passed along to the worker/task scheduling code. It is
intended as a temporary workaround until a more fundamental review and
correction of the issue can be done.
[With additions to the patch provided by Tejun Hao <tj@kernel.org>]
Signed-off-by: Michael Bringmann <mwb@linux.vnet.ibm.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Javier González [Fri, 28 Jul 2017 13:13:16 +0000 (15:13 +0200)]
lightnvm: pblk: advance bio according to lba index
When a lba either hits the cache or corresponds to an empty entry in the
L2P table, we need to advance the bio according to the position in which
the lba is located. Otherwise, we will copy data in the wrong page, thus
causing data corruption for the application.
In case of a cache hit, we assumed that bio->bi_iter.bi_idx would
contain the correct index, but this is no necessarily true. Instead, use
the local bio advance counter and iterator. This guarantees that lbas
hitting the cache are copied into the right bv_page.
In case of an empty L2P entry, we omitted to advance the bio. In the
cases when the same I/O also contains a cache hit, data corresponding
to this lba will be copied to the wrong bv_page. Fix this by advancing
the bio as we do in the case of a cache hit.
Will Deacon [Mon, 24 Jul 2017 10:46:09 +0000 (11:46 +0100)]
arm64: mmu: Place guard page after mapping of kernel image
The vast majority of virtual allocations in the vmalloc region are followed
by a guard page, which can help to avoid overruning on vma into another,
which may map a read-sensitive device.
This patch adds a guard page to the end of the kernel image mapping (i.e.
following the data/bss segments).
Cc: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
x86/boot: Disable the address-of-packed-member compiler warning
The clang warning 'address-of-packed-member' is disabled for the general
kernel code, also disable it for the x86 boot code.
This suppresses a bunch of warnings like this when building with clang:
./arch/x86/include/asm/processor.h:535:30: warning: taking address of
packed member 'sp0' of class or structure 'x86_hw_tss' may result in an
unaligned pointer value [-Waddress-of-packed-member]
return this_cpu_read_stable(cpu_tss.x86_tss.sp0);
^~~~~~~~~~~~~~~~~~~
./arch/x86/include/asm/percpu.h:391:59: note: expanded from macro
'this_cpu_read_stable'
#define this_cpu_read_stable(var) percpu_stable_op("mov", var)
^~~
./arch/x86/include/asm/percpu.h:228:16: note: expanded from macro
'percpu_stable_op'
: "p" (&(var)));
^~~
Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Cc: Doug Anderson <dianders@chromium.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/20170725215053.135586-1-mka@chromium.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Merge tag 'drm-fixes-for-v4.13-rc3' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"These iare the fixes for 4.13-rc3: vmwgfx, exynos, i915, amdgpu,
nouveau, host1x and displayport fixes.
As expected people woke up this week, i915 didn't do an -rc2 pull so
got a bumper -rc3 pull, and Ben resurfaced on nouveau and fixed a
bunch of major crashers seen on Fedora 26, and there are a few vmwgfx
fixes as well.
Otherwise exynos had some regression fixes/cleanups, and amdgpu has an
rcu locking regression fix and a couple of minor fixes"
* tag 'drm-fixes-for-v4.13-rc3' of git://people.freedesktop.org/~airlied/linux: (44 commits)
drm/i915: Fix bad comparison in skl_compute_plane_wm.
drm/i915: Force CPU synchronisation even if userspace requests ASYNC
drm/i915: Only skip updating execobject.offset after error
drm/i915: Only mark the execobject as pinned on success
drm/i915: Remove assertion from raw __i915_vma_unpin()
drm/i915/cnl: Fix loadgen select programming on ddi vswing sequence
drm/i915: Fix scaler init during CRTC HW state readout
drm/i915/selftests: Fix an error handling path in 'mock_gem_device()'
drm/i915: Unbreak gpu reset vs. modeset locking
gpu: host1x: Free the IOMMU domain when there is no device to attach
drm/i915: Fix cursor updates on some platforms
drm/i915: Fix user ptr check size in eb_relocate_vma()
drm: exynos: mark pm functions as __maybe_unused
drm/exynos: select CEC_CORE if CEC_NOTIFIER
drm/exynos/hdmi: fix disable sequence
drm/exynos: mic: add a bridge at probe
drm/exynos/dsi: Remove error handling for bridge_node DT parsing
drm/exynos: dsi: do not try to find bridge
drm: exynos: hdmi: make of_device_ids const.
drm: exynos: constify mixer_match_types and *_mxr_drv_data.
...
Dave Airlie [Fri, 28 Jul 2017 02:32:59 +0000 (12:32 +1000)]
Merge tag 'exynos-drm-fixes-for-v4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes
Summary:
- fix probing fail issue of dsi driver without bridge device.
- fix disable sequence of hdmi driver.
- trivial cleanups.
* tag 'exynos-drm-fixes-for-v4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
drm: exynos: mark pm functions as __maybe_unused
drm/exynos: select CEC_CORE if CEC_NOTIFIER
drm/exynos/hdmi: fix disable sequence
drm/exynos: mic: add a bridge at probe
drm/exynos/dsi: Remove error handling for bridge_node DT parsing
drm/exynos: dsi: do not try to find bridge
drm: exynos: hdmi: make of_device_ids const.
drm: exynos: constify mixer_match_types and *_mxr_drv_data.
exynos_drm: Clean up duplicated assignment in exynos_drm_driver
The driver attempts to 'select MDIO_DEVICE', but the code
is actually a loadable module when PHYLIB=m:
drivers/phy/broadcom/phy-bcm-ns-usb3.o: In function `bcm_ns_usb3_mdiodev_phy_write':
phy-bcm-ns-usb3.c:(.text.bcm_ns_usb3_mdiodev_phy_write+0x28): undefined reference to `mdiobus_write'
drivers/phy/broadcom/phy-bcm-ns-usb3.o: In function `bcm_ns_usb3_module_exit':
phy-bcm-ns-usb3.c:(.exit.text+0x18): undefined reference to `mdio_driver_unregister'
drivers/phy/broadcom/phy-bcm-ns-usb3.o: In function `bcm_ns_usb3_module_init':
phy-bcm-ns-usb3.c:(.init.text+0x18): undefined reference to `mdio_driver_register'
phy-bcm-ns-usb3.c:(.init.text+0x38): undefined reference to `mdio_driver_unregister'
Using 'depends on MDIO_BUS' instead will avoid the link error.
Fixes: af850e14a7ae ("phy: bcm-ns-usb3: add MDIO driver using proper bus layer") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
I still see build errors in randconfig builds and have had this
patch for a while to locally work around it:
drivers/built-in.o: In function `xgene_mdio_probe':
mux-core.c:(.text+0x352154): undefined reference to `of_mdiobus_register'
mux-core.c:(.text+0x352168): undefined reference to `mdiobus_free'
mux-core.c:(.text+0x3521c0): undefined reference to `mdiobus_alloc_size'
The idea is that CONFIG_MDIO_BUS now reflects whether the mdio_bus
code is built-in or a module, and other drivers that use the core
code can simply depend on that, instead of having a complex
dependency line.
Fixes: 90eff9096c01 ("net: phy: Allow splitting MDIO bus/device support from PHYs") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Dave Airlie [Fri, 28 Jul 2017 00:19:08 +0000 (10:19 +1000)]
Merge tag 'drm-intel-fixes-2017-07-27' of git://anongit.freedesktop.org/git/drm-intel into drm-fixes
i915 fixes for -rc3
Bit more than usual since we missed -rc2. 4x cc: stable, 2 gvt
patches, but all fairly minor stuff. Last minute rebase was to add a
few missing cc: stable, I did prep the pull this morning already and
made sure CI approves.
* tag 'drm-intel-fixes-2017-07-27' of git://anongit.freedesktop.org/git/drm-intel:
drm/i915: Fix bad comparison in skl_compute_plane_wm.
drm/i915: Force CPU synchronisation even if userspace requests ASYNC
drm/i915: Only skip updating execobject.offset after error
drm/i915: Only mark the execobject as pinned on success
drm/i915: Remove assertion from raw __i915_vma_unpin()
drm/i915/cnl: Fix loadgen select programming on ddi vswing sequence
drm/i915: Fix scaler init during CRTC HW state readout
drm/i915/selftests: Fix an error handling path in 'mock_gem_device()'
drm/i915: Unbreak gpu reset vs. modeset locking
drm/i915: Fix cursor updates on some platforms
drm/i915: Fix user ptr check size in eb_relocate_vma()
drm/i915/gvt: Extend KBL platform support in GVT-g
drm/i915/gvt: Fix the vblank timer close issue after shutdown VMs in reverse
Dave Airlie [Fri, 28 Jul 2017 00:14:08 +0000 (10:14 +1000)]
Merge tag 'drm-misc-fixes-2017-07-27' of git://anongit.freedesktop.org/git/drm-misc into drm-fixes
Core Changes:
- dp: A few fixes in drm_dp_downstream_debug() (Chris)
- rockchip: sanitize the Kconfig dependencies (fallout from EXTCON) (Arnd)
- host1x: Free the iommu domain when attach_device fails (Paul)
Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Paul Kocialkowski <contact@paulk.fr>
* tag 'drm-misc-fixes-2017-07-27' of git://anongit.freedesktop.org/git/drm-misc:
gpu: host1x: Free the IOMMU domain when there is no device to attach
drm/rockchip: fix Kconfig dependencies
drm/dp: Don't trust drm_dp_downstream_id()
drm/dp: Fix read pointer for drm_dp_downsteam_debug()
Merge tag 'acpi-4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These are two fixups for the suspend-to-idle handling in the ACPI
subsystem after recent changes in that area and two simple fixes of
the ACPI NUMA code.
Specifics:
- Add an ACPI module parameter to allow users to override the new
default behavior on some systems where the EC GPE is not disabled
during suspend-to-idle in case the EC on their systems generates
excessive wakeup events and they want to sacrifice some
functionality (like power button wakeups) for extra battery life
while suspended (Rafael Wysocki).
- Fix flushing of the outstanding EC work in the ACPI core
suspend-to-idle code (Rafael Wysocki).
- Add a missing include and fix a messed-up comment in the ACPI NUMA
code (Ross Zwisler)"
* tag 'acpi-4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: NUMA: Fix typo in the full name of SRAT
ACPI: NUMA: add missing include in acpi_numa.h
ACPI / PM / EC: Flush all EC work in acpi_freeze_sync()
ACPI / EC: Add parameter to force disable the GPE on suspend
Chris Wilson [Fri, 21 Jul 2017 14:50:37 +0000 (15:50 +0100)]
drm/i915: Force CPU synchronisation even if userspace requests ASYNC
The goal here was to minimise doing any thing or any check inside the
kernel that was not strictly required. For a userspace that assumes
complete control over the cache domains, the kernel is usually using
outdated information and may trigger clflushes where none were
required.
However, swapping is a situation where userspace has no knowledge of the
domain transfer, and will leave the object in the CPU cache. The kernel
must flush this out to the backing storage prior to use with the GPU. As
we use an asynchronous task tracked by an implicit fence for this, we
also need to cancel the ASYNC flag on the object so that the object will
wait for the clflush to complete before being executed. This also absolves
userspace of the responsibility imposed by commit 77ae9957897d ("drm/i915:
Enable userspace to opt-out of implicit fencing") that its needed to ensure
that the object was out of the CPU cache prior to use on the GPU.
Fixes: 77ae9957897d ("drm/i915: Enable userspace to opt-out of implicit fencing")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101571 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Jason Ekstrand <jason@jlekstrand.net> Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> Link: https://patchwork.freedesktop.org/patch/msgid/20170721145037.25105-5-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit 0f46daa1a273779a0b73d768a788ca3f04238f9c) Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Chris Wilson [Fri, 21 Jul 2017 14:50:36 +0000 (15:50 +0100)]
drm/i915: Only skip updating execobject.offset after error
I was being overly paranoid in not updating the execobject.offset after
performing the fallback copy where we set reloc.presumed_offset to -1.
The thinking was to ensure that a subsequent NORELOC execbuf would be
forced to process the invalid relocations. However this is overkill so
long as we *only* update the execobject.offset following a successful
update of the relocation value witin the batch. If we have to repeat the
execbuf due to a later interruption, then we may skip the relocations on
the second pass (honouring NORELOC) since the execobject.offset match
the actual offsets (even though reloc.presumed_offset is garbage).
Subsequent calls to execbuf with NORELOC should themselves ensure that
the reloc.presumed_offset have been corrected in case of future
migration.
Reporting back the actual execobject.offset, even when
reloc.presumed_offset is garbage, ensures that reuse of those objects
use the latest information to avoid relocations.
Fixes: 2889caa92321 ("drm/i915: Eliminate lots of iterations over the execobjects array")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101635 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170721145037.25105-4-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit 1f727d9e725a408ef58d159c20fb2e51818ff153) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Chris Wilson [Fri, 21 Jul 2017 14:50:35 +0000 (15:50 +0100)]
drm/i915: Only mark the execobject as pinned on success
If we fail to acquire a fence (for old school fenced GPU access) then we
unwind the vma reservation, including its pin. However, we were making
the execobject as holding the pin before erring out, leading to a double
unpin:
Reported-by: Tomi Sarvela <tomi.p.sarvela@intel.com> Fixes: 2889caa92321 ("drm/i915: Eliminate lots of iterations over the execobjects array") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170721145037.25105-3-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit 1da7b54c46bcfe5484af0b27d8c9003b238031b0) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Chris Wilson [Fri, 21 Jul 2017 14:50:34 +0000 (15:50 +0100)]
drm/i915: Remove assertion from raw __i915_vma_unpin()
After we detect a i915_vma pin overflow, we call __i915_vma_unpin to
cleanup. However, on an overflow the pin_count bitfield will be zero,
triggering an assertion, even though we the intention is to merely warn
and report the error back to the user (as historically the culprit has
be a leak in the display code).
Fixes: 20dfbde463c8 ("drm/i915: Wrap vma->pin_count accessors with small inline helpers") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170721145037.25105-2-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit 67fddd902b8e37b15a905c287ce4e40f52a564af) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drm/i915/cnl: Fix loadgen select programming on ddi vswing sequence
The condition for setting the Loadgen Select bit of
PORT_TX_DW4 register during DDI Vswing Sequence should be
Bit rate <=6 GHz whereas the existing code checks only
Bit Rate < 6GHz. This patch fixes this condition.
While at it also remove the redundant paranthesis.
Fixes: cf54ca8bc567 ("drm/i915/cnl: Implement voltage swing sequence.") Cc: Paulo Zanoni <paulo.r.zanoni@intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Manasi Navare <manasi.d.navare@intel.com> Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/1500329122-32662-1-git-send-email-manasi.d.navare@intel.com Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit a8e45a1c42d11597e975f3e5f2fe182f90cdaa7f) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Imre Deak [Thu, 20 Jul 2017 11:28:20 +0000 (14:28 +0300)]
drm/i915: Fix scaler init during CRTC HW state readout
The scaler allocation code depends on a non-zero default value for the
crtc scaler_id, so make sure we initialize the scaler state accordingly
even if the crtc is off. This fixes at least an initial YUV420 modeset
(added in a follow-up patchset by Shashank) when booting with the screen
off: after the initial HW readout and modeset which enables the scaler a
subsequent modeset will disable the scaler which isn't properly
allocated. This results in a funky HW state where the pipe scaler HW
registers can't be modified and the normally black screen is grey and
shifted to the right or jitters.
The problem was revealed by Shashank's YUV420 patchset and first
reported by Ville.
v2:
- In the stable tag also include versions which need backporting (Jani)
Cc: Jani Nikula <jani.nikula@intel.com> Cc: Shashank Sharma <shashank.sharma@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: Chandra Konduru <chandra.konduru@intel.com> Cc: Matt Roper <matthew.d.roper@intel.com> Cc: <stable@vger.kernel.org> # 4.2.x Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Fixes: a1b2278e4dfc ("drm/i915: skylake panel fitting using shared scalers") Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Mahesh Kumar <mahesh1.kumar@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170720112820.26816-1-imre.deak@intel.com Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit 5fb9dadf336f3590c799e8cbde348215dccc2aa2) Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Daniel Vetter [Wed, 19 Jul 2017 12:54:55 +0000 (14:54 +0200)]
drm/i915: Unbreak gpu reset vs. modeset locking
Taking the modeset locks unconditionally isn't the greatest idea,
because atm that part is still broken and times out (and then atomic
keels over). And there's really no reason to do so, the old code
didn't do that either.
To make the patch a bit simpler let's also nuke 2 cases that are only
around for the old mmioflip paths. Atomic nonblocking workers will not
die (minus bugs) when a gpu reset happens.
And of course this doesn't fix any of the gpu reset vs. modeset
deadlock fun, but it at least stop modern CI machines from keeling
over all over the place for no reason at all.
And we still have the explicit testcases to run the fake gpu reset, so
coverage isn't that much worse.
v2: Split out additional changes on top, restrict this to purely reducing
the critical section of modeset locks.
v2: Review from Maarten
- update comments
- don't oops when state is NULL in intel_finish_reset, but try to at
least still drop locks properly. The hw is going to be toast anyway.
Fixes: 739748939974 ("drm/i915: Fix modeset handling during gpu reset, v5.") Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20170719125502.25696-3-daniel.vetter@ffwll.ch
(cherry picked from commit ce87ea15ebc60a9f8f156b2549f7b2cf7fe48d04) Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Merge branch 'parisc-4.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
- The majority of lines changed are due to regenerated defconfig files.
- The support for the Page Deallocation Table (PDT) which was merged in
the merge window for 4.13 contained a bug which crashes the kernel if
a bad page is reported by firmware. This is now fixed and the kernel
messages will show which memory slot holds the broken DIMM.
- Commit 3a166fc2d4ef ("kbuild: handle libs-y archives separately from
built-in.o archives") broke linking the parisc kernel due to
millicode symbols which can't be reached then any longer. This was
fixed by modifying the parisc vmlinux.lds linker script.
- If the stack checker panics on stack overflow, avoid recursive
panics.
- Some parisc machines can't physically power off and thus instead
start after some time to flood the console by presumably detected
soft lockups. Avoid this by disabling the lockup detectors before
entering the endless for-next loop.
- Dave Anglin provided fixes which prevents TLB speculation on flushed
pages on PA8800/PA9000 CPUs.
- Arvind Yadav sent a trivial patch to constify the attribute_group
structure in our firmware on-board-flash storage driver
(pdc_stable.c)
* 'parisc-4.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Extend disabled preemption in copy_user_page
parisc: Prevent TLB speculation on flushed pages on CPUs that only support equivalent aliases
parisc: Suspend lockup detectors before system halt
parisc: Show DIMM slot number which holds broken memory module
parisc: Add function to return DIMM slot of physical address
parisc: Fix crash when calling PDC_PAT_MEM PDT firmware function
parisc: regenerate defconfig files
parisc: pdc_stable: constify attribute_group structures.
parisc: Merge millicode routines via linker script
parisc: Disable further stack checks when panic occurs during stack check
xen: dont fiddle with event channel masking in suspend/resume
Instead of fiddling with masking the event channels during suspend
and resume handling let do the irq subsystem do its job. It will do
the mask and unmask operations as needed.
Signed-off-by: Juergen Gross <jgross@suse.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Tested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Juergen Gross <jgross@suse.com>
xen: selfballoon: remove unnecessary static in frontswap_selfshrink()
Remove unnecessary static on local variables last_frontswap_pages and
tgt_frontswap_pages. Such variables are initialized before being used,
on every execution path throughout the function. The statics have no
benefit and, removing them reduce the code size.
This issue was detected using Coccinelle and the following semantic patch:
@bad exists@
position p;
identifier x;
type T;
@@
static T x@p;
...
x = <+...x...+>
@@
identifier x;
expression e;
type T;
position p != bad.p;
@@
-static
T x@p;
... when != x
when strict
?x = e;
You can see a significant difference in the code size after executing
the size command, before and after the code change:
before:
text data bss dec hex filename
5633 3452 384 9469 24fd drivers/xen/xen-selfballoon.o
after:
text data bss dec hex filename
5576 3308 256 9140 23b4 drivers/xen/xen-selfballoon.o
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com>
Merge tag 'sound-4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This is a pretty boring pull request, containing a few HD-audio quirks
and ID updates as usual suspects, as well as a fix for a regression of
FM801 chip on ia64 (what a legacy combination!)"
* tag 'sound-4.13-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Add mute led support for HP ProBook 440 G4
ALSA: hda/realtek - No loopback on ALC225/ALC295 codec
ALSA: hda/realtek - Update headset mode for ALC225
ALSA: fm801: Initialize chip after IRQ handler is registered
ALSA: hda/realtek - Update headset mode for ALC298
ALSA: hda - Add missing NVIDIA GPU codec IDs to patch table
Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"Two areas addressed by these fixes:
- Fixes from Dave Martin for the signal frames that were broken with
certain configurations. No one noticed until recently.
- More kexec fixes to ensure that the crashkernel region is correctly
allocated, and a fix for the location of the device tree when
several kexec kernels are loaded"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8687/1: signal: Fix unparseable iwmmxt_sigframe in uc_regspace[]
ARM: 8686/1: iwmmxt: Add missing __user annotations to sigframe accessors
ARM: kexec: fix failure to boot crash kernel
ARM: kexec: avoid allocating crashkernel region outside lowmem
NFS: Optimize fallocate by refreshing mapping when needed.
posix_fallocate() will allocate space in an NFS file by considering
the last byte of every 4K block. If it is before EOF, it will read
the byte and if it is zero, a zero is written out. If it is after EOF,
the zero is unconditionally written.
For the blocks beyond EOF, if NFS believes its cache is valid, it will
expand these writes to write full pages, and then will merge the pages.
This results if (typically) 1MB writes. If NFS believes its cache is
not valid (particularly if NFS_INO_INVALID_DATA or
NFS_INO_REVAL_PAGECACHE are set - see nfs_write_pageuptodate()), it will
send the individual 1-byte writes. This results in (typically) 256 times
as many RPC requests, and can be substantially slower.
Currently nfs_revalidate_mapping() is only used when reading a file or
mmapping a file, as these are times when the content needs to be
up-to-date. Writes don't generally need the cache to be up-to-date, but
writes beyond EOF can benefit, particularly in the posix_fallocate()
case.
So this patch calls nfs_revalidate_mapping() when writing beyond EOF -
i.e. when there is a gap between the end of the file and the start of
the write. If the cache is thought to be out of date (as happens after
taking a file lock), this will cause a GETATTR, and the two flags
mentioned above will be cleared. With this, posix_fallocate() on a
newly locked file does not generate excessive tiny writes.
Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Prior to commit ca0daa277aca ("NFS: Cache aggressively when file is open
for writing"), NFS would revalidate, or invalidate, the file size when
taking a lock. Since that commit it only invalidates the file content.
If the file size is changed on the server while wait for the lock, the
client will have an incorrect understanding of the file size and could
corrupt data. This particularly happens when writing beyond the
(supposed) end of file and can be easily be demonstrated with
posix_fallocate().
If an application opens an empty file, waits for a write lock, and then
calls posix_fallocate(), glibc will determine that the underlying
filesystem doesn't support fallocate (assuming version 4.1 or earlier)
and will write out a '0' byte at the end of each 4K page in the region
being fallocated that is after the end of the file.
NFS will (usually) detect that these writes are beyond EOF and will
expand them to cover the whole page, and then will merge the pages.
Consequently, NFS will write out large blocks of zeroes beyond where it
thought EOF was. If EOF had moved, the pre-existing part of the file
will be over-written. Locking should have protected against this,
but it doesn't.
This patch restores the use of nfs_zap_caches() which invalidated the
cached attributes. When posix_fallocate() asks for the file size, the
request will go to the server and get a correct answer.
cc: stable@vger.kernel.org (v4.8+) Fixes: ca0daa277aca ("NFS: Cache aggressively when file is open for writing") Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
gpu: host1x: Free the IOMMU domain when there is no device to attach
When there is no device to attach to the IOMMU domain, as may be the
case when the device-tree does not contain the proper iommu node, it is
best to keep going without IOMMU support rather than failing.
This allows the driver to probe and function instead of taking down
all of the tegra drm driver, leading to missing display support.
Shawn Lin [Tue, 18 Jul 2017 08:31:38 +0000 (16:31 +0800)]
Documentation: dw-mshc: deprecate num-slots
dwmmc host driver already deprecate it in the driver
but didn't modify the documentation to reflect the fact.
This patch deprecates it and clean up num-slots from the
examples of all variant host drivers.
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Acked-by: Jaehoon Chung <jh80.chung@samsung.com> Acked-by: Rob Herring <robh@kernel.org> Fixes: d30a8f7bdf64 ("mmc: dw_mmc: deprecated the "num-slots" property") Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Paul Blakey [Thu, 6 Jul 2017 13:40:34 +0000 (16:40 +0300)]
net/mlx5: Fix mlx5_add_flow_rules call with correct num of dests
When adding ethtool steering rule with action DISCARD we wrongly
pass a NULL dest with dest_num 1 to mlx5_add_flow_rules().
What this error seems to have caused is sending VPORT 0
(MLX5_FLOW_DESTINATION_TYPE_VPORT) as the fte dest instead of no dests.
We have fte action correctly set to DROP so it might been ignored
anyways.
Fixes: 74491de93712 ("net/mlx5: Add multi dest support") Signed-off-by: Paul Blakey <paulb@mellanox.com> Reviewed-by: Mark Bloch <markb@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
net/mlx5e: Add missing support for PTP_CLK_REQ_PPS request
Add the missing option to enable the PTP_CLK_PPS function.
In this case pin should be configured as 1PPS IN first and
then it will be connected to PPS mechanism.
Events will be reported as PTP_CLOCK_PPSUSR events to relevant sysfs.
In order to fix the drift in 1PPS out need to adjust the next pulse.
On each 1PPS out falling edge driver gets the event, then the event
handler adjusts the next pulse starting time.
Ilan Tayari [Wed, 5 Jul 2017 07:17:04 +0000 (10:17 +0300)]
net/mlx5e: Fix outer_header_zero() check size
outer_header_zero() routine checks if the outer_headers match of a
flow-table entry are all zero.
This function uses the size of whole fte_match_param, instead of just
the outer_headers member, causing failure to detect all-zeros if
any other members of the fte_match_param are non-zero.
On interface remove, the clean-up was done incorrectly causing
an error in the log:
"SET_FLOW_TABLE_ROOT(0x92f) op_mod(0x0) failed...syndrome (0x7e9f14)"
This was caused by the following flow:
-ndo_uninit:
Move QP state to RST (this disconnects the QP from FT),
the QP cannot be attached to any FT unless it is in RTS.
-mlx5_rdma_netdev_free:
cleanup_rx: Destroy FT
cleanup_tx: Destroy QP and remove QPN from FT
This caused a problem when destroying current FT we tried to
re-attach the QP to the next FT which is not needed.
The correct flow is:
-mlx5_rdma_netdev_free:
cleanup_rx: remove QPN from FT & Destroy FT
cleanup_tx: Destroy QP
Fixes: 508541146af1 ("net/mlx5: Use underlay QPN from the root name space") Signed-off-by: Alex Vesker <valex@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
net/mlx5: Fix command completion after timeout access invalid structure
Completion on timeout should not free the driver command entry structure
as it will need to access it again once real completion event from FW
will occur.
net/mlx5: Consider tx_enabled in all modes on remap
The tx_enabled lag event field is used to determine whether a slave is
active.
Current logic uses this value only if the mode is active-backup.
However, LACP mode, although considered a load balancing mode, can mark
a slave as inactive in certain situations (e.g., LACP timeout).
This fix takes the tx_enabled value into account when remapping, with
no respect to the LAG mode (this should not affect the behavior in XOR
mode, since in this mode both slaves are marked as active).
Fixes: 7907f23adc18 (net/mlx5: Implement RoCE LAG feature) Signed-off-by: Aviv Heller <avivh@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Eran Ben Elisha [Thu, 1 Jun 2017 06:40:56 +0000 (09:40 +0300)]
net/mlx5: Clean SRIOV eswitch resources upon VF creation failure
Upon sriov enable, eswitch is always enabled.
Currently, if enable hca failed over all VFs, we would skip eswitch
disable as part of sriov disable, which will lead to resources leak.
Fix it by disabling eswitch if it was enabled (use indication from
eswitch mode).
Fixes: 6b6adee3dad2 ('net/mlx5: SRIOV core code refactoring') Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Noa Osherovich <noaos@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Thomas Gleixner [Thu, 27 Jul 2017 10:21:11 +0000 (12:21 +0200)]
genirq/cpuhotplug: Revert "Set force affinity flag on hotplug migration"
That commit was part of the changes moving x86 to the generic CPU hotplug
interrupt migration code. The force flag was required on x86 before the
hierarchical irqdomain rework, but invoking set_affinity() with force=true
stayed and had no side effects.
At some point in the past, the force flag got repurposed to support the
exynos timer interrupt affinity setting to a not yet online CPU, so the
interrupt controller callback does not verify the supplied affinity mask
against cpu_online_mask.
Setting the flag in the CPU hotplug code causes the cpu online masking to
be blocked on these irq controllers and results in potentially affining an
interrupt to the CPU which is unplugged, i.e. instead of moving it away,
it's just reassigned to it.
As the force flags is not longer needed on x86, it's safe to revert that
patch so the ARM irqchips which use the force flag work again.
Add comments to that effect, so this won't happen again.
Note: The online mask handling should be done in the generic code and the
force flag and the masking in the irq chips removed all together, but
that's not a change possible for 4.13.
Fixes: 77f85e66aa8b ("genirq/cpuhotplug: Set force affinity flag on hotplug migration") Reported-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Will Deacon <will.deacon@arm.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: LAK <linux-arm-kernel@lists.infradead.org> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1707271217590.3109@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Will Deacon [Tue, 25 Jul 2017 15:30:34 +0000 (16:30 +0100)]
drivers/perf: arm_pmu: Request PMU SPIs with IRQF_PER_CPU
Since the PMU register interface is banked per CPU, CPU PMU interrrupts
cannot be handled by a CPU other than the one with the PMU asserting the
interrupt. This means that migrating PMU SPIs, as we do during a CPU
hotplug operation doesn't make any sense and can lead to the IRQ being
disabled entirely if we route a spurious IRQ to the new affinity target.
This has been observed in practice on AMD Seattle, where CPUs on the
non-boot cluster appear to take a spurious PMU IRQ when coming online,
which is routed to CPU0 where it cannot be handled.
This patch passes IRQF_PERCPU for PMU SPIs and forcefully sets their
affinity prior to requesting them, ensuring that they cannot
be migrated during hotplug events. This interacts badly with the DB8500
erratum workaround that ping-pongs the interrupt affinity from the handler,
so we avoid passing IRQF_PERCPU in that case by allowing the IRQ flags
to be overridden in the platdata.
Fixes: 3cf7ee98b848 ("drivers/perf: arm_pmu: move irq request/free into probe") Cc: Mark Rutland <mark.rutland@arm.com> Cc: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
brcmfmac: fix memleak due to calling brcmf_sdiod_sgtable_alloc() twice
Due to a bugfix in wireless tree and the commit mentioned below a merge
was needed which went haywire. So the submitted change resulted in the
function brcmf_sdiod_sgtable_alloc() being called twice during the probe
thus leaking the memory of the first call.
Cc: stable@vger.kernel.org # 4.6.x Fixes: 4d7928959832 ("brcmfmac: switch to new platform data") Reported-by: Stefan Wahren <stefan.wahren@i2se.com> Tested-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Hante Meuleman <hante.meuleman@broadcom.com> Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Daniel Stone [Wed, 26 Jul 2017 11:24:10 +0000 (12:24 +0100)]
brcmfmac: Don't grow SKB by negative size
The commit to rework the headroom check in start_xmit() now calls
pxskb_expand_head() unconditionally if the header is CoW. Unfortunately,
it does so with the delta between the extant headroom and the header
length, which may be negative if there is already sufficient headroom.
pskb_expand_head() does allow for size being 0, in which case it just
copies, so clamp the header delta to zero.
Opening Chrome (and all my tabs) on a PCIE device was enough to reliably
hit this.
Fixes: 270a6c1f65fe ("brcmfmac: rework headroom check in .start_xmit()") Signed-off-by: Daniel Stone <daniels@collabora.com> Cc: Arend Van Spriel <arend.vanspriel@broadcom.com> Cc: James Hughes <james.hughes@raspberrypi.org> Cc: Hante Meuleman <hante.meuleman@broadcom.com> Cc: Pieter-Paul Giesberts <pieter-paul.giesberts@broadcom.com> Cc: Franky Lin <franky.lin@broadcom.com> Tested-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Ville Syrjälä [Fri, 14 Jul 2017 15:52:27 +0000 (18:52 +0300)]
drm/i915: Fix cursor updates on some platforms
Turns out that just writing CURPOS isn't sufficient to move the cursor
on some platforms. My 830 works just fine, but eg. 945 and PNV don't.
On those platforms we need to arm even the CURPOS update with a
CURBASE write.
Even worse, a write to any of the cursor register apart from CURBASE
will cancel an already pending cursor update. So if we have armed a
CURCNTR/CURBASE update, a subsequent CURPOS write prior to vblank
would cancel that armed update. Thus we're left with a cursor that
doesn't appear to move, or even change shape.
Fix the problem by always performing the CURBASE write after a
CURPOS write. Bspec is somewhat unclear which platforms actually
require this CURBASE write and which don't. So to keep it simple
and to make sure we really fix the problem across all supported
devices, let's just perform the CURBASE write unconditionally.
Cc: Paul Menzel <pmenzel@molgen.mpg.de>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101790 Fixes: 75343a44c901 ("drm/i915: Drop useless posting reads from cursor commit") Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Tested-by: Paul Menzel <paulepanter@users.sourceforge.net> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20170714155227.6089-1-ville.syrjala@linux.intel.com
(cherry picked from commit 8753d2bc5e49daad301ce65f5dada57ed924fad6) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Imre Deak [Fri, 14 Jul 2017 15:12:42 +0000 (18:12 +0300)]
drm/i915: Fix user ptr check size in eb_relocate_vma()
Fix the sizeof(ptr) vs. sizeof(*ptr) typo.
Fixes: 2889caa92321 ("drm/i915: Eliminate lots of iterations over the execobjects array") Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Imre Deak <imre.deak@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170714151242.517-2-imre.deak@intel.com
(cherry picked from commit edd9003f7f9dddd28fdd768e6e7569d996c769cb) Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Xin Long [Wed, 26 Jul 2017 08:24:59 +0000 (16:24 +0800)]
sctp: fix the check for _sctp_walk_params and _sctp_walk_errors
Commit b1f5bfc27a19 ("sctp: don't dereference ptr before leaving
_sctp_walk_{params, errors}()") tried to fix the issue that it
may overstep the chunk end for _sctp_walk_{params, errors} with
'chunk_end > offset(length) + sizeof(length)'.
But it introduced a side effect: When processing INIT, it verifies
the chunks with 'param.v == chunk_end' after iterating all params
by sctp_walk_params(). With the check 'chunk_end > offset(length)
+ sizeof(length)', it would return when the last param is not yet
accessed. Because the last param usually is fwdtsn supported param
whose size is 4 and 'chunk_end == offset(length) + sizeof(length)'
This is a badly issue even causing sctp couldn't process 4-shakes.
Client would always get abort when connecting to server, due to
the failure of INIT chunk verification on server.
The patch is to use 'chunk_end <= offset(length) + sizeof(length)'
instead of 'chunk_end < offset(length) + sizeof(length)' for both
_sctp_walk_params and _sctp_walk_errors.
Fixes: b1f5bfc27a19 ("sctp: don't dereference ptr before leaving _sctp_walk_{params, errors}()") Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Wed, 26 Jul 2017 06:19:09 +0000 (14:19 +0800)]
dccp: fix a memleak that dccp_ipv6 doesn't put reqsk properly
In dccp_v6_conn_request, after reqsk gets alloced and hashed into
ehash table, reqsk's refcnt is set 3. one is for req->rsk_timer,
one is for hlist, and the other one is for current using.
The problem is when dccp_v6_conn_request returns and finishes using
reqsk, it doesn't put reqsk. This will cause reqsk refcnt leaks and
reqsk obj never gets freed.
Jianlin found this issue when running dccp_memleak.c in a loop, the
system memory would run out.
powerpc/mm/hash: Free the subpage_prot_table correctly
Fixes: dad6f37c2602e ("powerpc: subpage_protect: Increase the array size to take care of 64TB") Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Tested-by: Ram Pai <linuxram@us.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
The rework of the exynos DRM clock handling introduced
warnings for configurations that have CONFIG_PM disabled:
drivers/gpu/drm/exynos/exynos_hdmi.c:736:13: error: 'hdmi_clk_disable_gates' defined but not used [-Werror=unused-function]
static void hdmi_clk_disable_gates(struct hdmi_context *hdata)
^~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/exynos/exynos_hdmi.c:717:12: error: 'hdmi_clk_enable_gates' defined but not used [-Werror=unused-function]
static int hdmi_clk_enable_gates(struct hdmi_context *hdata)
The problem is that the PM functions themselves are inside of
an #ifdef, but some functions they call are not.
This patch removes the #ifdef and instead marks the PM functions
as __maybe_unused, which is a more reliable way to get it right.
Hans Verkuil [Mon, 17 Jul 2017 11:48:14 +0000 (13:48 +0200)]
drm/exynos: select CEC_CORE if CEC_NOTIFIER
If the s5p-cec driver is a module and the drm exynos driver is built-in, then
the CEC core will be a module also, causing the CEC notifier to fail (will be
compiled as empty functions).
To prevent this select CEC_CORE if CEC_NOTIFIER is set to ensure the CEC core
is also built into the kernel.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
Andrzej Hajda [Wed, 12 Jul 2017 10:01:23 +0000 (12:01 +0200)]
drm/exynos/hdmi: fix disable sequence
The "Fixes" patch was incorrectly merged, as a result PHY is prematurely
powered off and for example Odroid-U3 cannot disable TV power domain
when HDMI cable is unplugged.
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Reported-by: Marek Szyprowski <m.szyprowski@samsung.com> Fixes: 625e63e2 ("drm/exynos/hdmi: fix pipeline disable order") Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
Hoegeun Kwon [Wed, 21 Jun 2017 10:51:43 +0000 (19:51 +0900)]
drm/exynos/dsi: Remove error handling for bridge_node DT parsing
Remove the error handling of bridge_node because the bridge_node is
optional.
For example, In case of Exynos SoC, a bridge device such as mDNIe and
MIC could be placed between Display Controller and MIPI DSI device but
the bridge device is optional.
Arvind Yadav [Mon, 19 Jun 2017 09:24:03 +0000 (14:54 +0530)]
drm: exynos: hdmi: make of_device_ids const.
of_device_ids are not supposed to change at runtime. All functions
working with of_device_ids provided by <linux/of.h> work with const
of_device_ids. So mark the non-const structs as const.
File size before:
text data bss dec hex filename
12294 1192 0 13486 34ae drivers/gpu/drm/exynos/exynos_hdmi.o
File size after constify hdmi_match_types.
text data bss dec hex filename
13318 176 0 13494 34b6 drivers/gpu/drm/exynos/exynos_hdmi.o
Jakub Kicinski [Tue, 25 Jul 2017 22:16:12 +0000 (15:16 -0700)]
bpf: don't zero out the info struct in bpf_obj_get_info_by_fd()
The buffer passed to bpf_obj_get_info_by_fd() should be initialized
to zeros. Kernel will enforce that to guarantee we can safely extend
info structures in the future.
Making the bpf_obj_get_info_by_fd() call in libbpf perform the zeroing
is problematic, however, since some members of the info structures
may need to be initialized by the callers (for instance pointers
to buffers to which kernel is to dump translated and jited images).
Remove the zeroing and fix up the in-tree callers before any kernel
has been released with this code.
As Daniel points out this seems to be the intended operation anyway,
since commit 95b9afd3987f ("bpf: Test for bpf ID") is itself setting
the buffer pointers before calling bpf_obj_get_info_by_fd().
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Apparently netpoll_setup() assumes that netpoll.dev_name is a pointer
when checking if the device name is set:
if (np->dev_name) {
...
However the field is a character array, therefore the condition always
yields true. Check instead whether the first byte of the array has a
non-zero value.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Dave Airlie [Wed, 26 Jul 2017 22:49:48 +0000 (08:49 +1000)]
Merge branch 'drm-fixes-4.13' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
Three misc amd fixes.
* 'drm-fixes-4.13' of git://people.freedesktop.org/~agd5f/linux:
drm/amd/powerplay: fix AVFS voltage offset for Vega10
drm/amdgpu/gfx9: simplify and fix GRBM index selection
drm/amdgpu: Fix blocking in RCU critical section(v2)
Anna Schumaker [Tue, 25 Jul 2017 20:10:47 +0000 (16:10 -0400)]
NFS: Use raw NFS access mask in nfs4_opendata_access()
Commit bd8b2441742b ("NFS: Store the raw NFS access mask in the inode's
access cache") changed how the access results are stored after an
access() call. An NFS v4 OPEN might have access bits returned with the
opendata, so we should use the NFS4_ACCESS values when determining the
return value in nfs4_opendata_access().
Fixes: bd8b2441742b ("NFS: Store the raw NFS access mask in the inode's
access cache") Reported-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com> Tested-by: Takashi Iwai <tiwai@suse.de>
WANG Cong [Tue, 25 Jul 2017 16:44:25 +0000 (09:44 -0700)]
bonding: commit link status change after propose
Commit de77ecd4ef02 ("bonding: improve link-status update in mii-monitoring")
moves link status commitment into bond_mii_monitor(), but it still relies
on the return value of bond_miimon_inspect() as the hint. We need to return
non-zero as long as we propose a link status change.
Fixes: de77ecd4ef02 ("bonding: improve link-status update in mii-monitoring") Reported-by: Benjamin Gilbert <benjamin.gilbert@coreos.com> Tested-by: Benjamin Gilbert <benjamin.gilbert@coreos.com> Cc: Mahesh Bandewar <maheshb@google.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Acked-by: Mahesh Bandewar <maheshb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
dm, dax: Make sure dm_dax_flush() is called if device supports it
Currently dm_dax_flush() is not being called, even if underlying dax
device supports write cache, because DAXDEV_WRITE_CACHE is not being
propagated up to the DM dax device.
If the underlying dax device supports write cache, set
DAXDEV_WRITE_CACHE on the DM dax device. This will cause dm_dax_flush()
to be called.
Fixes: abebfbe2f7 ("dm: add ->flush() dax operation support") Signed-off-by: Vivek Goyal <vgoyal@redhat.com> Acked-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
dm verity fec: fix GFP flags used with mempool_alloc()
mempool_alloc() cannot fail for GFP_NOIO allocation, so there is no
point testing for failure.
One place the code tested for failure was passing "0" as the GFP
flags. This is most unusual and is probably meant to be GFP_NOIO,
so that is changed.
Also, allocation from ->extra_pool and ->prealloc_pool are repeated
before releasing the previous allocation. This can deadlock if the code
is servicing a write under high memory pressure. To avoid deadlocks,
change these to use GFP_NOWAIT and leave the error handling in place.
Signed-off-by: NeilBrown <neilb@suse.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio fixes and cleanups from Michael Tsirkin:
"Fixes some minor issues all over the codebase"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio-net: fix module unloading
virtio-balloon: coding format cleanup
virtio-balloon: deflate via a page list
virtio_blk: Use sysfs_match_string() helper
This patch fixes it by making the caller of cancel_hv_timer, start_hv_timer
and start_sw_timer be in preemption-disabled regions, which trivially
avoid any reentrancy issue with preempt notifier.
Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
[Add more WARNs. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Wanpeng Li [Tue, 25 Jul 2017 10:40:46 +0000 (03:40 -0700)]
KVM: nVMX: Fix loss of L2's NMI blocking state
Run kvm-unit-tests/eventinj.flat in L1 w/ ept=0 on both L0 and L1:
Before NMI IRET test
Sending NMI to self
NMI isr running stack 0x461000
Sending nested NMI to self
After nested NMI to self
Nested NMI isr running rip=40038e
After iret
After NMI to self
FAIL: NMI
Commit 4c4a6f790ee862 (KVM: nVMX: track NMI blocking state separately
for each VMCS) tracks NMI blocking state separately for vmcs01 and
vmcs02. However it is not enough:
- The L2 (kvm-unit-tests/eventinj.flat) generates NMI that will fault
on IRET, so the L2 can generate #PF which can be intercepted by L0.
- L0 walks L1's guest page table and sees the mapping is invalid, it
resumes the L1 guest and injects the #PF into L1. At this point the
vmcs02 has nmi_known_unmasked=true.
- L1 sets set bit 3 (blocking by NMI) in the interruptibility-state field
of vmcs12 (and fixes the shadow page table) before resuming L2 guest.
- L1 executes VMRESUME to resume L2, causing a vmexit to L0
- during VMRESUME emulation, prepare_vmcs02 sets bit 3 in the
interruptibility-state field of vmcs02, but nmi_known_unmasked is
still true.
- L2 immediately exits to L0 with another page fault, because L0 still has
not updated the NGVA->HPA page tables. However, nmi_known_unmasked is
true so vmx_recover_nmi_blocking does not do anything.
The fix is to update nmi_known_unmasked when preparing vmcs02 from vmcs12.
Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Wincy Van [Fri, 28 Apr 2017 05:13:59 +0000 (13:13 +0800)]
KVM: nVMX: Fix posted intr delivery when vcpu is in guest mode
The PI vector for L0 and L1 must be different. If dest vcpu0
is in guest mode while vcpu1 is delivering a non-nested PI to
vcpu0, there wont't be any vmexit so that the non-nested interrupt
will be delayed.
Signed-off-by: Wincy Van <fanwenyi0529@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Wincy Van [Fri, 28 Apr 2017 05:13:58 +0000 (13:13 +0800)]
x86: irq: Define a global vector for nested posted interrupts
We are using the same vector for nested/non-nested posted
interrupts delivery, this may cause interrupts latency in
L1 since we can't kick the L2 vcpu out of vmx-nonroot mode.
This patch introduces a new vector which is only for nested
posted interrupts to solve the problems above.
Signed-off-by: Wincy Van <fanwenyi0529@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The VM is running in 32-bit PAE mode, and Table 4-7 of the Intel manual
says:
Table 4-7. Use of CR3 with PAE Paging
Bit Position(s) Contents
4:0 Ignored
31:5 Physical address of the 32-Byte aligned
page-directory-pointer table used for linear-address
translation
63:32 Ignored (these bits exist only on processors supporting
the Intel-64 architecture)
To placate the static checker, write the mask explicitly as an
unsigned long constant instead of using a 32-bit unsigned constant.
Cc: Dan Carpenter <dan.carpenter@oracle.com> Fixes: f85c758dbee54cc3612a6e873ef7cecdb66ebee5 Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
KVM: make pid available for uevents without debugfs
Simplify and improve the code so that the PID is always available in
the uevent even when debugfs is not available.
This adds a userspace_pid field to struct kvm, as per Radim's
suggestion, so that the PID can be retrieved on destruction too.
Acked-by: Janosch Frank <frankja@linux.vnet.ibm.com> Fixes: 286de8f6ac9202 ("KVM: trigger uevents when creating or destroying a VM") Signed-off-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Abeni [Wed, 26 Jul 2017 09:33:49 +0000 (11:33 +0200)]
udp: unbreak build lacking CONFIG_XFRM
We must use pre-processor conditional block or suitable accessors to
manipulate skb->sp elsewhere builds lacking the CONFIG_XFRM will break.
Fixes: dce4551cb2ad ("udp: preserve head state for IP_CMSG_PASSSEC") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Scott Bauer [Tue, 25 Jul 2017 16:27:06 +0000 (10:27 -0600)]
nvme: validate admin queue before unquiesce
With a misbehaving controller it's possible we'll never
enter the live state and create an admin queue. When we
fail out of reset work it's possible we failed out early
enough without setting up the admin queue. We tear down
queues after a failed reset, but needed to do some more
sanitization.
Fixes 443bd90f2cca: "nvme: host: unquiesce queue in nvme_kill_queues()"
Just like in the allocator we must avoid touching multiple AGs out of
order when freeing blocks, as freeing still locks the AGF and can cause
the same AB-BA deadlocks as in the allocation path.
Signed-off-by: Christoph Hellwig <hch@lst.de> Reported-by: Nikolay Borisov <n.borisov.lkml@gmail.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Dave Martin [Tue, 25 Jul 2017 11:52:41 +0000 (12:52 +0100)]
arm64: sysreg: Fix unprotected macro argmuent in write_sysreg
write_sysreg() may misparse the value argument because it is used
without parentheses to protect it.
This patch adds the ( ) in order to avoid any surprises.
Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Dave Martin <Dave.Martin@arm.com>
[will: same change to write_sysreg_s] Signed-off-by: Will Deacon <will.deacon@arm.com>
Neil Leeder [Mon, 24 Jul 2017 21:17:02 +0000 (17:17 -0400)]
perf: qcom_l2: fix column exclusion check
The check for column exclusion did not verify that the event being
checked was an L2 event, and not a software event.
Software events should not be checked for column exclusion.
This resulted in a group with both software and L2 events sometimes
incorrectly rejecting the L2 event for column exclusion and
not counting it.
Add a check for PMU type before applying column exclusion logic.
Fixes: 21bdbb7102edeaeb ("perf: add qcom l2 cache perf events driver") Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Neil Leeder <nleeder@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
Michael Ellerman [Wed, 26 Jul 2017 05:00:42 +0000 (15:00 +1000)]
powerpc/Makefile: Fix ld version check with 64-bit LE-only toolchain
In commit efe0160cfd40 ("powerpc/64: Linker on-demand sfpr functions
for modules"), we added an ld version check early in the powerpc
top-level Makefile.
Because the Makefile runs before the kernel config is setup, the
checks for CONFIG_CPU_LITTLE_ENDIAN etc. all take the default case. So
we end up configuring ld for 32-bit big endian.
That would be OK, except that for historical (or perhaps no) reason,
we use 'override LD' to add the endian flags to the LD variable
itself, rather than the normal approach of adding them to LDFLAGS.
The end result is that when we check the ld version we run it as:
$(CROSS_COMPILE)ld -EB -m elf32ppc --version
This often works, unless you are using a 64-bit only and/or little
endian only, toolchain. In which case you see something like:
The proper fix is to stop using 'override LD', but that will require a
fair bit of testing. Instead we can fix it for now just by reordering
the Makefile to do the version check earlier.
Fixes: efe0160cfd40 ("powerpc/64: Linker on-demand sfpr functions for modules") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
powerpc/pseries: Fix of_node_put() underflow during reconfig remove
As for commit 68baf692c435 ("powerpc/pseries: Fix of_node_put()
underflow during DLPAR remove"), the call to of_node_put() must be
removed from pSeries_reconfig_remove_node().
dlpar_detach_node() and pSeries_reconfig_remove_node() both call
of_detach_node(), and thus the node should not be released in both
cases.
powerpc/mm/radix: Workaround prefetch issue with KVM
There's a somewhat architectural issue with Radix MMU and KVM.
When coming out of a guest with AIL (Alternate Interrupt Location, ie,
MMU enabled), we start executing hypervisor code with the PID register
still containing whatever the guest has been using.
The problem is that the CPU can (and will) then start prefetching or
speculatively load from whatever host context has that same PID (if
any), thus bringing translations for that context into the TLB, which
Linux doesn't know about.
This can cause stale translations and subsequent crashes.
Fixing this in a way that is neither racy nor a huge performance
impact is difficult. We could just make the host invalidations always
use broadcast forms but that would hurt single threaded programs for
example.
We chose to fix it instead by partitioning the PID space between guest
and host. This is possible because today Linux only use 19 out of the
20 bits of PID space, so existing guests will work if we make the host
use the top half of the 20 bits space.
We additionally add support for a property to indicate to Linux the
size of the PID register which will be useful if we eventually have
processors with a larger PID space available.
There is still an issue with malicious guests purposefully setting the
PID register to a value in the hosts PID range. Hopefully future HW
can prevent that, but in the meantime, we handle it with a pair of
kludges:
- On the way out of a guest, before we clear the current VCPU in the
PACA, we check the PID and if it's outside of the permitted range
we flush the TLB for that PID.
- When context switching, if the mm is "new" on that CPU (the
corresponding bit was set for the first time in the mm cpumask), we
check if any sibling thread is in KVM (has a non-NULL VCPU pointer
in the PACA). If that is the case, we also flush the PID for that
CPU (core).
This second part is needed to handle the case where a process is
migrated (or starts a new pthread) on a sibling thread of the CPU
coming out of KVM, as there's a window where stale translations can
exist before we detect it and flush them out.
A future optimization could be added by keeping track of whether the
PID has ever been used and avoid doing that for completely fresh PIDs.
We could similarily mark PIDs that have been the subject of a global
invalidation as "fresh". But for now this will do.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[mpe: Rework the asm to build with CONFIG_PPC_RADIX_MMU=n, drop
unneeded include of kvm_book3s_asm.h] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Marc Gonzalez [Tue, 25 Jul 2017 12:35:03 +0000 (14:35 +0200)]
net: ethernet: nb8800: Handle all 4 RGMII modes identically
Before commit bf8f6952a233 ("Add blurb about RGMII") it was unclear
whose responsibility it was to insert the required clock skew, and
in hindsight, some PHY drivers got it wrong. The solution forward
is to introduce a new property, explicitly requiring skew from the
node to which it is attached. In the interim, this driver will handle
all 4 RGMII modes identically (no skew).
Fixes: 52dfc8301248 ("net: ethernet: add driver for Aurora VLSI NB8800 Ethernet controller") Signed-off-by: Marc Gonzalez <marc_gonzalez@sigmadesigns.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Revert "netvsc: optimize calculation of number of slots"
The logic for computing page buffer scatter does not take into
account the impact of compound pages. Therefore the optimization
to compute number of slots was incorrect and could cause stack
corruption a skb was sent with lots of fragments from huge pages.
Fixes: 60b86665af0d ("netvsc: optimize calculation of number of slots") Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Joel Stanley [Tue, 25 Jul 2017 00:49:01 +0000 (10:19 +0930)]
ftgmac100: return error in ftgmac100_alloc_rx_buf
The error paths set err, but it's not returned.
I wondered if we should fix all of the callers to check the returned
value, but Ben explains why the code is this way:
> Most call sites ignore it on purpose. There's nothing we can do if
> we fail to get a buffer at interrupt time, so we point the buffer to
> the scratch page so the HW doesn't DMA into lalaland and lose the
> packet.
>
> The one call site that tests and can fail is the one used when brining
> the interface up. If we fail to allocate at that point, we fail the
> ifup. But as you noticed, I do have a bug not returning the error.
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Joel Stanley <joel@jms.id.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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