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691,473 commits

Author SHA1 Message Date
Patrice Chotard
3b3deba776 ARM: dts: remove STiH416-pinctrl.dtsi
Since v4.8, STiH415/416 clock support has
been removed [1], these platform doesn't boot.
We can remove DTS files related to these socs.

[1] https://patchwork.kernel.org/patch/9157571/

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2016-10-20 15:48:37 +02:00
Patrice Chotard
1047121a1c ARM: dts: remove STiH416-clock.dtsi
Since v4.8, STiH415/416 clock support has
been removed [1], these platform doesn't boot.
We can remove DTS files related to these socs.

[1] https://patchwork.kernel.org/patch/9157571/

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2016-10-20 15:48:36 +02:00
Patrice Chotard
4950752759 ARM: dts: remove STiH416-b2000.dts
Since v4.8, STiH415/416 clock support has
been removed [1], these platform doesn't boot.
We can remove DTS files related to these socs.

[1] https://patchwork.kernel.org/patch/9157571/

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2016-10-20 15:48:35 +02:00
Patrice Chotard
ee6310e8b2 ARM: dts: remove STiH416-b2020.dts
Since v4.8, STiH415/416 clock support has
been removed [1], these platform doesn't boot.
We can remove DTS files related to these socs.

[1] https://patchwork.kernel.org/patch/9157571/

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2016-10-20 15:48:35 +02:00
Patrice Chotard
d724f94595 ARM: dts: remove STiH416-b2020e.dts
Since v4.8, STiH415/416 clock support has
been removed [1], these platform doesn't boot.
We can remove DTS files related to these socs.

[1] https://patchwork.kernel.org/patch/9157571/

Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
2016-10-20 15:48:34 +02:00
Daniel Vetter
41842d6bab Merge tag 'gvt-next-fix-2016-10-20' of https://github.com/01org/gvt-linux into drm-intel-next-queued
gvt-next-fix-2016-10-20

This contains fix for first pull request.
- clean up header mess between i915 core and gvt
- new MAINTAINERS item
- new kernel-doc section
- fix compiling warnings
- gvt gem fix series from Chris
- fix for i915 intel_engine_cs change
- some sparse fixes from Changbin

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2016-10-20 15:15:42 +02:00
Chris Wilson
eafc4894d0 drm/i915: Add a sunset clause to GPU hang logging
If the kernel is old, more than a few releases old, chances are that the
user is using an old kernel for a good reason, despite there being GPU
hangs. After 180days since driver release stop suggesting that they
should send those reports upstream.

[Since Daniel acked this I expect he will pick up the dim patch to
automatically update the DRIVER_TIMESTAMP everytime we tag a new
release.]

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161014134428.29582-1-chris@chris-wilson.co.uk
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2016-10-20 14:07:22 +01:00
Jiri Slaby
8678654e3c kvm: x86: memset whole irq_eoi
gcc 7 warns:
arch/x86/kvm/ioapic.c: In function 'kvm_ioapic_reset':
arch/x86/kvm/ioapic.c:597:2: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size]

And it is right. Memset whole array using sizeof operator.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: x86@kernel.org
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
[Added x86 subject tag]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2016-10-20 14:54:11 +02:00
Borislav Petkov
758f588d6f kvm/x86: Fix unused variable warning in kvm_timer_init()
When CONFIG_CPU_FREQ is not set, int cpu is unused and gcc rightfully
warns about it:

  arch/x86/kvm/x86.c: In function ‘kvm_timer_init’:
  arch/x86/kvm/x86.c:5697:6: warning: unused variable ‘cpu’ [-Wunused-variable]
    int cpu;
        ^~~

But since it is used only in the CONFIG_CPU_FREQ block, simply move it
there, thus squashing the warning too.

Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
2016-10-20 14:49:52 +02:00
Philipp Zabel
a92d81456c gpu: ipu-v3: initially clear all interrupts
If we want to stop resetting the IPU in the future, masking all
interrupts before registering the irq handlers will not be enough to
avoid spurious interrupts. We also have to clear them.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Liu Ying <gnuiyl@gmail.com>
2016-10-20 14:40:21 +02:00
Philipp Zabel
eae13c9337 drm/imx: ipuv3-plane: add support for YUV 4:2:2 and 4:4:4, NV12, and NV16 formats
Hook up support for DRM_FORMAT_YUV422, DRM_FORMAT_YVU422,
DRM_FORMAT_YUV444, DRM_FORMAT_YVU444, DRM_FORMAT_NV12,
and DRM_FORMAT_NV16.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Liu Ying <gnuiyl@gmail.com>
2016-10-20 14:40:12 +02:00
Philipp Zabel
c9d508c2df gpu: ipu-v3: add YUV 4:4:4 support
The IDMAC does support reading and writing DRM_FORMAT_YUV444 and
DRM_FORMAT_YVU444.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Liu Ying <gnuiyl@gmail.com>
2016-10-20 14:40:10 +02:00
Philipp Zabel
9c24d680de gpu: ipu-cpmem: remove unused ipu_cpmem_set_yuv_planar function
ipu_cpmem_set_yuv_planar_full is only used directly, remove the wrapper.

Suggested-by: Liu Ying <gnuiyl@gmail.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Liu Ying <gnuiyl@gmail.com>
2016-10-20 14:40:02 +02:00
Philipp Zabel
f2fa3536b2 drm/imx: ipuv3-plane: let drm_plane_state_to_ubo/vbo handle chroma subsampling other than 4:2:0
To support 4:2:2 or 4:4:4 chroma subsampling, divide the x/y offsets in
drm_plane_state_to_ubo/vbo only if necessary for the given pixel format.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Liu Ying <gnuiyl@gmail.com>
2016-10-20 14:39:54 +02:00
Philipp Zabel
3fd8b292ae drm/imx: ipuv3-plane: merge ipu_plane_atomic_set_base into atomic_update
ipu_plane_atomic_set_base is called from ipu_plane_atomic_update in two
different places, depending on whether drm_atomic_crtc_needs_modeset is
true. Also depending on the same condition, this function does two
different things.
This patch removes the indirection by merging the relevant parts into
ipu_plane_atomic_update, making the actual code flow more obvious as a
result. Also remove the duplicate planar format comment, which is
already found in ipu_plane_atomic_check.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Liu Ying <gnuiyl@gmail.com>
2016-10-20 14:39:53 +02:00
Philipp Zabel
181c9bfe4b drm/imx: ipuv3-plane: request modeset if plane offsets changed
If the framebuffer pixel format is planar YUV and unchanged, but the U
or V plane offsets change, do not return an error, but request a modeset
instead.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Liu Ying <gnuiyl@gmail.com>
2016-10-20 14:39:52 +02:00
Philipp Zabel
86126748cd drm/imx: ipuv3-plane: disable local alpha for planes without alpha channel
Without this patch, after enabling the overlay plane with an RGBA
framebuffer, switching to a framebuffer without alpha channel would
cause the plane to vanish, since the pixel local alpha is constant
zero in that case. Disable local alpha again when setting an opaque
framebuffer.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-20 14:39:51 +02:00
Philipp Zabel
5fb57ab328 drm/imx: ipuv3-plane: make sure x/y offsets are even in case of chroma subsampling
Odd x/y offsets are not allowed for horizontally/vertically chroma
subsampled planar YUV formats.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Acked-by: Liu Ying <gnuiyl@gmail.com>
2016-10-20 14:39:38 +02:00
David Arcari
67bf5156ed gpio / ACPI: fix returned error from acpi_dev_gpio_irq_get()
acpi_dev_gpio_irq_get() currently ignores the error returned
by acpi_get_gpiod_by_index() and overwrites it with -ENOENT.

Problem is this error can be -EPROBE_DEFER, which just blows
up some drivers when the module ordering is not correct.

Cc: stable@vger.kernel.org
Signed-off-by: David Arcari <darcari@redhat.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-10-20 14:15:01 +02:00
Arnd Bergmann
0cb940927d gpio: mockup: add sysfs dependency
Building the gpio-mockup driver without SYSFS results in a harmless Kconfig
warning:

warning: (GPIO_MOCKUP) selects GPIO_SYSFS which has unmet direct dependencies (GPIOLIB && SYSFS)

We can easily avoid that warning by adding a dependency on SYSFS.

Fixes: 0f98dd1b27 ("gpio/mockup: add virtual gpio device")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-10-20 14:14:11 +02:00
Dan Carpenter
d1ca19cb3b gpio: stmpe: || vs && typo
&& was obviously intended here.

Fixes: 6936e1f88d ('gpio: stmpe: Write int status register only when needed')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-10-20 14:14:11 +02:00
Arvind Yadav
44df08198b gpio: mxs: Unmap region obtained by of_iomap
Free memory mapping, if mxs_gpio_probe is not successful.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-10-20 14:14:11 +02:00
Pavel Machek
15e2a35787 gpio/board.txt: point to gpiod_set_value
gpiod_set_value() is preffered interface these days, so add a
pointer. Also fix a missing ).

Signed-off-by: Pavel Machek <pavel@ucw.cz>
[Fixed some grammar and reworded]
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2016-10-20 14:14:11 +02:00
Chris Wilson
eaa14c2486 drm/i915: Stop reporting error details in dmesg as well as the error-state
As we already capture all the information from the registers into the
error-state, also dumping that to dmesg just generates noise that upsets
CI and users alike (and doesn't provide us with any more information).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20161019125203.28851-1-chris@chris-wilson.co.uk
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
2016-10-20 13:00:06 +01:00
Heiko Carstens
c8061485a0 sched/core, x86: Make struct thread_info arch specific again
The following commit:

  c65eacbe29 ("sched/core: Allow putting thread_info into task_struct")

... made 'struct thread_info' a generic struct with only a
single ::flags member, if CONFIG_THREAD_INFO_IN_TASK_STRUCT=y is
selected.

This change however seems to be quite x86 centric, since at least the
generic preemption code (asm-generic/preempt.h) assumes that struct
thread_info also has a preempt_count member, which apparently was not
true for x86.

We could add a bit more #ifdefs to solve this problem too, but it seems
to be much simpler to make struct thread_info arch specific
again. This also makes the conversion to THREAD_INFO_IN_TASK_STRUCT a
bit easier for architectures that have a couple of arch specific stuff
in their thread_info definition.

The arch specific stuff _could_ be moved to thread_struct. However
keeping them in thread_info makes it easier: accessing thread_info
members is simple, since it is at the beginning of the task_struct,
while the thread_struct is at the end. At least on s390 the offsets
needed to access members of the thread_struct (with task_struct as
base) are too large for various asm instructions.  This is not a
problem when keeping these members within thread_info.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: keescook@chromium.org
Cc: linux-arch@vger.kernel.org
Link: http://lkml.kernel.org/r/1476901693-8492-2-git-send-email-mark.rutland@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-10-20 13:27:47 +02:00
Dmitry Safonov
ed1e7db33c x86/signal: Remove bogus user_64bit_mode() check from sigaction_compat_abi()
The recent introduction of SA_X32/IA32 sa_flags added a check for
user_64bit_mode() into sigaction_compat_abi(). user_64bit_mode() is true
for native 64-bit processes and x32 processes.

Due to that the function returns w/o setting the SA_X32_ABI flag for X32
processes. In consequence the kernel attempts to deliver the signal to the
X32 process in native 64-bit mode causing the process to segfault.

Remove the check, so the actual check for X32 mode which sets the ABI flag
can be reached. There is no side effect for native 64-bit mode.

[ tglx: Rewrote changelog ]

Fixes: 6846351052 ("x86/signal: Add SA_{X32,IA32}_ABI sa_flags")
Reported-by: Mikulas Patocka <mpatocka@redhat.com>
Tested-by: Adam Borowski <kilobyte@angband.pl>
Signed-off-by: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: Dmitry Safonov <dsafonov@virtuozzo.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: linux-mm@kvack.org
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Pavel Emelyanov <xemul@virtuozzo.com>
Link: http://lkml.kernel.org/r/CAJwJo6Z8ZWPqNfT6t-i8GW1MKxQrKDUagQqnZ%2B0%2B697%3DMyVeGg@mail.gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-10-20 13:05:15 +02:00
Ard Biesheuvel
b9dce7f1ba arm64: kernel: force ET_DYN ELF type for CONFIG_RELOCATABLE=y
GNU ld used to set the ELF file type to ET_DYN for PIE executables, which
is the same file type used for shared libraries. However, this was changed
recently, and now PIE executables are emitted as ET_EXEC instead.

The distinction is only relevant for ELF loaders, and so there is little
reason to care about the difference when building the kernel, which is
why the change has gone unnoticed until now.

However, debuggers do use the ELF binary, and expect ET_EXEC type files
to appear in memory at the exact offset described in the ELF metadata.
This means source level debugging is no longer possible when KASLR is in
effect or when executing the stub.

So add the -shared LD option when building with CONFIG_RELOCATABLE=y. This
forces the ELF file type to be set to ET_DYN (which is what you get when
building with binutils 2.24 and earlier anyway), and has no other ill
effects.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2016-10-20 11:37:25 +01:00
Marc Zyngier
fd5bed48b4 irqchip/gic: Add missing \n to CPU IF adjustment message
It really looks bad without a newline.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-10-20 11:21:01 +01:00
Wei Yongjun
af69240060 memory: atmel-sdramc: use builtin_platform_driver to simplify the code
Use the builtin_platform_driver() macro to make the code simpler.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-10-20 11:59:57 +02:00
Wei Yongjun
ecc2d430fa memory: atmel-ebi: fix return value check in at91_ebi_dev_disable()
Fix the retrn value check which testing the wrong variable
in at91_ebi_dev_disable().

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2016-10-20 11:59:22 +02:00
Neil Armstrong
211bc8c3e5 dt-bindings: reset: oxnas: Update for OX820
Add new compatible string for reset and sys-ctrl for the Oxford
Semiconductor OX820 Support.
Drop the OX810SE indices since they moved in a dedicated include file.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-20 11:55:14 +02:00
Neil Armstrong
8cc134a367 dt-bindings: reset: oxnas: Add include file with reset indexes
Add DT include file for Oxford Semiconductor OX810SE and OX820 reset
controller support.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-20 11:55:09 +02:00
Neil Armstrong
a68262bb1e reset: oxnas: Add OX820 support
In order to support the Oxford Semiconductor OX820 SoC, add a new
compatible string.

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-20 11:54:55 +02:00
Peter Griffin
3bda1ed9ae reset: sti: softreset: Remove obsolete platforms from dt binding doc.
STiH415/6 SoC support is being removed from the kernel.
This patch updates the sti dt softreset bindings and
removes references to these obsolete platforms.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-20 11:52:48 +02:00
Peter Griffin
64933513e4 reset: sti: Remove STiH415/6 reset support
Support for STiH415/6 SoCs is being removed from the
kernel because the platforms are obsolete. This patch removes
the reset drivers for these SoC's.

Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
2016-10-20 11:52:08 +02:00
Hui Wang
6aecd87158 ALSA: hda - Fix headset mic detection problem for two Dell laptops
They uses the codec ALC255, and have the different pin cfg definition
from the ones in the existing pin quirk table. Now adding them into
the table to fix the problem.

Cc: stable@vger.kernel.org
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-10-20 11:47:23 +02:00
Rich Felker
3602ffdee9 irqchip/jcore: Don't show Kconfig menu item for driver
Core drivers for J-Core SoCs will be selected implicitly via
CONFIG_SH_JCORE_SOC instead. Based on a corresponding change to the
clocksource/timer driver requested by Daniel Lezcano.

Signed-off-by: Rich Felker <dalias@libc.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: linux-sh@vger.kernel.org
Link: http://lkml.kernel.org/r/883a3d17084003e3cf21bab73ec12828fe4ff6c6.1476899495.git.dalias@libc.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-10-20 11:43:58 +02:00
Du, Changbin
19e6393fb5 drm/i915/gvt: do not ignore return value of create_scratch_page
Function create_scratch_page() may fail in some cases.

Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20 17:31:36 +08:00
Du, Changbin
76a79d59ad drm/i915/gvt: fix spare warnings on odd constant _Bool cast
The function return values should has type int if it return
a integer value.

Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20 17:31:36 +08:00
Du, Changbin
999ccb4017 drm/i915/gvt: mark symbols static where possible
Mark all local functions & variables as static.

Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20 17:31:36 +08:00
Du, Changbin
321927db98 drm/i915/gvt: fix sparse warnings on different address spaces
Add proper __iomem annotation for pointers obtained via ioremap().

Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20 17:31:35 +08:00
Zhenyu Wang
0fac21e7e9 drm/i915/gvt: properly access enabled intel_engine_cs
Switch to use new for_each_engine() helper to properly access
enabled intel_engine_cs as i915 core has changed that to be
dynamic managed. At GVT-g init time would still depend on ring
mask to determine engine list as it's earlier.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20 17:31:35 +08:00
Chris Wilson
3eec872207 drm/i915/gvt: Remove defunct vmap_batch()
This code was removed from i915_cmd_parser.c but still an obsolete
version wound up being duplicated into gvt/cmd_parser.c. Good riddance.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20 17:31:35 +08:00
Chris Wilson
a28615041e drm/i915/gvt: Use common mapping routines for shadow_bb object
We have the ability to map an object, so use it rather than opencode it
badly. Note that the object remains permanently pinned, this is poor
practise.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20 17:31:34 +08:00
Chris Wilson
bcd0aeded4 drm/i915/gvt: Use common mapping routines for indirect_ctx object
We have the ability to map an object, so use it rather than opencode it
badly.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20 17:31:34 +08:00
Chris Wilson
66bbc3b2b1 drm/i915/gvt: Stop waiting whilst holding struct_mutex
For whatever reason, the gvt scheduler runs synchronously. At the very
least, lets run synchronously without holding the struct_mutex.

v2: cut'n'paste mutex_lock instead of unlock.
Replace long hold of struct_mutex with a mutex to serialise the worker
threads.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20 17:31:34 +08:00
Chris Wilson
f460c251ea drm/i915/gvt: Stop checking for impossible interrupts from a kthread
The kthread will not be interrupted, don't even bother checking.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20 17:31:33 +08:00
Chris Wilson
0eb742d7af drm/i915/gvt: Hold a reference on the request
The workload took a pointer to the request, and even waited upon,
without holding a reference on the request. Take that reference
explicitly and fix up the error path following request allocation that
missed flushing the request.

v2: [zhenyuw]
- drop request put in error path for dispatch, as main thread
caller will handle it identically to a real request.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20 17:29:36 +08:00
Chris Wilson
eeacd86efa drm/i915/gvt: Remove dangerous unpin of backing storage of bound GPU object
Unpinning the pages prior to the object being release from the GPU may
allow the GPU to read and write into system pages (i.e. use after free
by the hw).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20 17:18:40 +08:00
Chris Wilson
b6d891429d drm/i915/gvt: Use the returned VMA to provide the virtual address
The purpose of returning the just-pinned VMA is so that we can use the
information within, like its address. Also it should be tracked and used
as the cookie to unpin...

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
2016-10-20 17:18:40 +08:00