openwrt/staging/blogic.git
5 years agoMerge tag 'drm-misc-next-2019-04-18' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Wed, 24 Apr 2019 00:12:34 +0000 (10:12 +1000)]
Merge tag 'drm-misc-next-2019-04-18' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v5.2:

UAPI Changes:
- Document which feature flags belong to which command in virtio_gpu.h
- Make the FB_DAMAGE_CLIPS available for atomic userspace only, it's useless for legacy.

Cross-subsystem Changes:
- Add device tree bindings for lg,acx467akm-7 panel and ST-Ericsson Multi Channel Display Engine MCDE
- Add parameters to the device tree bindings for tfp410
- iommu/io-pgtable: Add ARM Mali midgard MMU page table format
- dma-buf: Only do a 64-bits seqno compare when driver explicitly asks for it, else wraparound.
- Use the 64-bits compare for dma-fence-chains

Core Changes:
- Make the fb conversion functions use __iomem dst.
- Rename drm_client_add to drm_client_register
- Move intel_fb_initial_config to core.
- Add a drm_gem_objects_lookup helper
- Add drm_gem_fence_array helpers, and use it in lima.
- Add drm_format_helper.c to kerneldoc.

Driver Changes:
- Add panfrost driver for mali midgard/bitfrost.
- Converts bochs to use the simple display type.
- Small fixes to sun4i, tinydrm, ti-fp410.
- Fid aspeed's Kconfig options.
- Make some symbols/functions static in lima, sun4i and meson.
- Add a driver for the lg,acx467akm-7 panel.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/737ad994-213d-45b5-207a-b99d795acd21@linux.intel.com
5 years agoMerge tag 'drm-intel-next-2019-04-17' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Wed, 24 Apr 2019 00:02:20 +0000 (10:02 +1000)]
Merge tag 'drm-intel-next-2019-04-17' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

UAPI Changes:

- uAPI "Fixes:" patch for the upcoming kernel 5.1, included here too

  We have an Ack from the media folks (only current user) for this
  late tweak

Cross-subsystem Changes:

- ALSA: hda: Fix racy display power access (Takashi, Chris)

Driver Changes:

- DDI and MIPI-DSI clocks fixes for Icelake (Vandita)
- Fix Icelake frequency change/locking (RPS) (Mika)
- Temporarily disable ppGTT read-only bit on Icelake (Mika)
- Add missing Icelake W/As (Mika)
- Enable 12 deep CSB status FIFO on Icelake (Mika)
- Inherit more Icelake code for Elkhartlake (Bob, Jani)

- Handle catastrophic error on engine reset (Mika)
- Shortcut readiness to reset check (Mika)
- Regression fix for GEM_BUSY causing us to report a mixed uabi-class request as not busy (Chris)
- Revert back to max link rate and lane count on eDP (Jani)
- Fix pipe BPP readout for BXT/GLK DSI (Ville)
- Set DP min_bpp to 8*3 for non-RGB output formats (Ville)
- Enable coarse preemption boundaries for Gen8 (Chris)
- Do not enable FEC without DSC (Ville)
- Restore correct BXT DDI latency optim setting calculation (Ville)
- Always reset context's RING registers to avoid running workload twice during reset (Chris)
- Set GPU wedged on driver unload (Janusz)
- Consolidate two similar barries from timeline into one (Chris)
- Only reset the pinned kernel contexts on resume (Chris)
- Wakeref tracking improvements (Chris, Imre)
- Lockdep fixes for shrinker interactions (Chris)
- Bump ready tasks ahead of busywaits in prep of semaphore use (Chris)

- Huge step in splitting display code into fine grained files (Jani)
- Refactor the IRQ init/reset macros for code saving (Paulo)
- Convert IRQ initialization code to uncore MMIO access (Paulo)
- Convert workarounds code to use uncore MMIO access (Chris)
- Nuke drm_crtc_state and use intel_atomic_state instead (Manasi)
- Update SKL clock-gating WA (Radhakrishna, Ville)
- Isolate GuC reset code flow (Chris)
- Expose force_dsc_enable through debugfs (Manasi)
- Header standalone compile testing framework (Jani)
- Code cleanups to reduce driver footprint (Chris)
- PSR code fixes and cleanups (Jose)
- Sparse and kerneldoc updates (Chris)
- Suppress spurious combo PHY B warning (Vile)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190418080426.GA6409@jlahtine-desk.ger.corp.intel.com
5 years agoMerge branch 'vmwgfx-next' of https://gitlab.freedesktop.org/drawat/linux into drm...
Dave Airlie [Tue, 23 Apr 2019 21:21:30 +0000 (07:21 +1000)]
Merge branch 'vmwgfx-next' of https://gitlab.freedesktop.org/drawat/linux into drm-next

Resource dirtying improvement by Thomas,
user-space error logging improvement and
some other minor fixes.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Deepak Rawat <drawat@vmware.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190423211630.61874-1-drawat@vmware.com
5 years agodrm/panel: simple: add lg,acx467akm-7 panel
Jonathan Marek [Sat, 24 Nov 2018 20:06:28 +0000 (15:06 -0500)]
drm/panel: simple: add lg,acx467akm-7 panel

Add ACX467AKM-7 4.95" 1080×1920 LCD panel that is found on the LG Nexus
5 (hammerhead) phone.

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
[masneyb@onstation.org: checkpatch fixes; rename jdi,1080p-hammerhead
binding to lg,acx467akm-7.]
Signed-off-by: Brian Masney <masneyb@onstation.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20181124200628.24393-2-masneyb@onstation.org
5 years agodt-bindings: drm/panel: simple: add lg,acx467akm-7 panel
Brian Masney [Sat, 24 Nov 2018 20:06:27 +0000 (15:06 -0500)]
dt-bindings: drm/panel: simple: add lg,acx467akm-7 panel

Add binding for the LG ACX467AKM-7 4.95" 1080×1920 LCD panel that is
found on the LG Nexus 5 (hammerhead) phone. This appears to be a JDI
panel based on some Internet searches, however a specific model number
could not be found. I disassembled an old Nexus 5 with a broken
screen and the LG part number is the only model number present on the
back of the panel, so I think that is probably the best ID to use.

Signed-off-by: Brian Masney <masneyb@onstation.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20181124200628.24393-1-masneyb@onstation.org
5 years agodrm/mcde: Add device tree bindings
Linus Walleij [Tue, 16 Apr 2019 14:28:44 +0000 (16:28 +0200)]
drm/mcde: Add device tree bindings

This adds the device tree bindings for the ST-Ericsson
Multi Channel Display Engine MCDE as found in the U8500
SoCs.

Cc: devicetree@vger.kernel.org
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190416142844.12038-1-linus.walleij@linaro.org
5 years agoRevert "drm: allow render capable master with DRM_AUTH ioctls"
Dave Airlie [Wed, 17 Apr 2019 20:46:33 +0000 (06:46 +1000)]
Revert "drm: allow render capable master with DRM_AUTH ioctls"

This reverts commit 8059add0478e29cb641936011a8fcc9ce9fd80be.

This commit while seemingly a good idea, breaks a radv check,
for a node being master because something succeeds where it failed
before now.

Apply the Linus rule, revert early and try again, we don't break
userspace.

Signed-off-by: Dave Airlie <airlied@redhat.com>
5 years agodrm/drv: Fix incorrect resolution of merge conflict
Janusz Krzysztofik [Wed, 17 Apr 2019 13:32:31 +0000 (15:32 +0200)]
drm/drv: Fix incorrect resolution of merge conflict

Commit f06ddb53096b ("BackMerge v5.1-rc5 into drm-next") incorrectly
resolved a merge conflict related to a patch having been merged twice:
- commit 3f04e0a6cfeb ("drm: Fix drm_release() and device unplug")
  introduced as a standalone fix via drm-fixes branch,
- commit 1ee57d4d75fb ("drm: Fix drm_release() and device unplug")
  applied as patch 1/2 of a series on drm-next branch.
That incorrect resolution of the conflict effectively reverted a change
introduced to drivers/gpu/drm/drm_drv.c by patch 2/2 of that series -
commit ba3bf37e150a ("drm/drv: drm_dev_unplug(): Move out drm_dev_put()
call").  Fix it.

Fixes: f06ddb53096b ("BackMerge v5.1-rc5 into drm-next")
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190417133232.16232-1-janusz.krzysztofik@linux.intel.com
5 years agodrm/meson: add size and alignment requirements for dumb buffers
Neil Armstrong [Mon, 8 Apr 2019 09:01:37 +0000 (11:01 +0200)]
drm/meson: add size and alignment requirements for dumb buffers

The Amlogic SoCs Canvas buffers stride must be aligned on 64bytes
and overall size should be aligned on PAGE width.

Adds a custom dumb_create op to adds these requirements.

Fixes: bbbe775ec5b5 ("drm: Add support for Amlogic Meson Graphic Controller")
Suggested-by: Sky Zhou <sky.zhou@amlogic.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Sky Zhou <sky.zhou@amlogic.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190408090137.2402-1-narmstrong@baylibre.com
5 years agodrm/meson: Make some functions static
YueHaibing [Sat, 13 Apr 2019 14:14:55 +0000 (22:14 +0800)]
drm/meson: Make some functions static

Fix sparse warnings:

drivers/gpu/drm/meson/meson_viu.c:93:6: warning: symbol 'meson_viu_set_g12a_osd1_matrix' was not declared. Should it be static?
drivers/gpu/drm/meson/meson_viu.c:121:6: warning: symbol 'meson_viu_set_osd_matrix' was not declared. Should it be static?
drivers/gpu/drm/meson/meson_viu.c:190:6: warning: symbol 'meson_viu_set_osd_lut' was not declared. Should it be static?

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190413141455.34020-1-yuehaibing@huawei.com
5 years agodrm/sun4i: Make some symbols static
YueHaibing [Tue, 16 Apr 2019 14:58:55 +0000 (22:58 +0800)]
drm/sun4i: Make some symbols static

Fix sparse warnings:

drivers/gpu/drm/sun4i/sun8i_tcon_top.c:271:36: warning: symbol 'sun8i_r40_tcon_top_quirks' was not declared. Should it be static?
drivers/gpu/drm/sun4i/sun8i_tcon_top.c:276:36: warning: symbol 'sun50i_h6_tcon_top_quirks' was not declared. Should it be static?
drivers/gpu/drm/sun4i/sun4i_tcon.c:239:6: warning: symbol 'sun4i_tcon_set_mux' was not declared. Should it be static?

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190416145855.20852-1-yuehaibing@huawei.com
5 years agodrm/lima: Make lima_sched_ops static
YueHaibing [Tue, 16 Apr 2019 14:43:53 +0000 (22:43 +0800)]
drm/lima: Make lima_sched_ops static

Fix sparse warning:

drivers/gpu/drm/lima/lima_sched.c:356:36: warning:
 symbol 'lima_sched_ops' was not declared. Should it be static?

Fixes: a1d2a6339961 ("drm/lima: driver for ARM Mali4xx GPUs")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190416144353.34024-1-yuehaibing@huawei.com
5 years agodrm/i915: Update DRIVER_DATE to 20190417
Joonas Lahtinen [Wed, 17 Apr 2019 09:07:47 +0000 (12:07 +0300)]
drm/i915: Update DRIVER_DATE to 20190417

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
5 years agodrm/i915/ehl: inherit icl cdclk init/uninit
Jani Nikula [Tue, 16 Apr 2019 08:28:52 +0000 (11:28 +0300)]
drm/i915/ehl: inherit icl cdclk init/uninit

The cdclk init/uninit code was changed by commit 93a643f29bcb
("drm/i915/cdclk: have only one init/uninit function") between the
versions of commit 39564ae86d51 ("drm/i915/ehl: Inherit Ice Lake
conditional code"). What got merged fails to do cdclk init/uninit on
ehl.

Fixes: 39564ae86d51 ("drm/i915/ehl: Inherit Ice Lake conditional code")
Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Bob Paauwe <bob.j.paauwe@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190416082852.18141-1-jani.nikula@intel.com
5 years agodrm: add drm_format_helper.c to kerneldoc
Gerd Hoffmann [Tue, 16 Apr 2019 09:05:33 +0000 (11:05 +0200)]
drm: add drm_format_helper.c to kerneldoc

Also drop the dstclip parameter sphinx has warned about (leftover from
an earlier patch version).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20190416090533.28374-1-kraxel@redhat.com
5 years agodrm/i915: Introduce struct class_instance for engines across the uAPI
Chris Wilson [Fri, 12 Apr 2019 07:14:16 +0000 (08:14 +0100)]
drm/i915: Introduce struct class_instance for engines across the uAPI

SSEU reprogramming of the context introduced the notion of engine class
and instance for a forwards compatible method of describing any engine
beyond the old execbuf interface. We wish to adopt this class:instance
description for more interfaces, so pull it out into a separate type for
userspace convenience.

Fixes: e46c2e99f600 ("drm/i915: Expose RPCS (SSEU) configuration to userspace (Gen11 only)")
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>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: Dmitry Rogozhkin <dmitry.v.rogozhkin@intel.com>
Cc: Tony Ye <tony.ye@intel.com>
Cc: Andi Shyti <andi@etezian.org>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Acked-by: Tony Ye <tony.ye@intel.com>
Reviewed-by: Andi Shyti <andi@etezian.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190412071416.30097-1-chris@chris-wilson.co.uk
5 years agodrm/lima: Use the drm_gem_fence_array_add helpers for our deps.
Eric Anholt [Mon, 1 Apr 2019 22:26:35 +0000 (15:26 -0700)]
drm/lima: Use the drm_gem_fence_array_add helpers for our deps.

It's a pretty direct port of what I did for v3d.

Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190401222635.25013-8-eric@anholt.net
Reviewed-and-tested-by: Qiang Yu <yuq825@gmail.com>
5 years agodrm: Add helpers for setting up an array of dma_fence dependencies.
Eric Anholt [Mon, 1 Apr 2019 22:26:33 +0000 (15:26 -0700)]
drm: Add helpers for setting up an array of dma_fence dependencies.

I needed to add implicit dependency support for v3d, and Rob Herring
has been working on it for panfrost, and I had recently looked at the
lima implementation so I think this will be a good intersection of
what we all want and simplify our scheduler implementations.

v2: Rebase on xa_limit_32b API change, and tiny checkpatch cleanups on
    the way in (unsigned int vs unsigned, extra return before
    EXPORT_SYMBOL_GPL)

Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190401222635.25013-6-eric@anholt.net
Reviewed-and-tested-by: Qiang Yu <yuq825@gmail.com> (v1)
5 years agodrm: Expose "FB_DAMAGE_CLIPS" property to atomic aware user-space only
Deepak Rawat [Mon, 15 Apr 2019 17:28:05 +0000 (10:28 -0700)]
drm: Expose "FB_DAMAGE_CLIPS" property to atomic aware user-space only

Plane property "FB_DAMAGE_CLIPS" can only be used by atomic aware
user-space, so no point exposing it otherwise.

Cc: <stable@vger.kernel.org>
Signed-off-by: Deepak Rawat <drawat@vmware.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Fixes: d3b21767821e ("drm: Add a new plane property to send damage during plane update")
Link: https://patchwork.freedesktop.org/patch/msgid/20190415172814.9840-1-drawat@vmware.com
5 years agodrm/i915: fully convert the IRQ initialization macros to intel_uncore
Paulo Zanoni [Wed, 10 Apr 2019 23:53:44 +0000 (16:53 -0700)]
drm/i915: fully convert the IRQ initialization macros to intel_uncore

Make them take the uncore argument from the caller instead of passing
the implicit &dev_priv->uncore directly. This will allow us to finally
pass something that's not dev_priv->uncore in the future, and gets rid
of the implicit variables in register macros.

v2: Rebase on top of the newer patches.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (v1)
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190410235344.31199-6-paulo.r.zanoni@intel.com
5 years agodrm/i915: convert the IRQ initialization functions to intel_uncore
Paulo Zanoni [Wed, 10 Apr 2019 23:53:43 +0000 (16:53 -0700)]
drm/i915: convert the IRQ initialization functions to intel_uncore

The IRQ initialization helpers are simple and self-contained. Continue
the transition started in the recent uncore rework to get us rid of
I915_READ/WRITE and the implicit dev_priv variables.

While the implicit dev_priv is removed from the IRQ initialization
helpers, we didn't get rid of them in the macro callers. Doing that
should be very simple now.

v2: Rebase on top of the new patches.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (v1)
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190410235344.31199-5-paulo.r.zanoni@intel.com
5 years agodrm/i915: add GEN2_ prefix to the I{E, I, M, S}R registers
Paulo Zanoni [Wed, 10 Apr 2019 23:53:42 +0000 (16:53 -0700)]
drm/i915: add GEN2_ prefix to the I{E, I, M, S}R registers

This discussion started because we use token pasting in the
GEN{2,3}_IRQ_INIT and GEN{2,3}_IRQ_RESET macros, so gen2-4 passes an
empty argument to those macros, making the code a little weird. The
original proposal was to just add a comment as the empty argument, but
Ville suggested we just add a prefix to the registers, and that indeed
sounds like a more elegant solution.

Now doing this is kinda against our rules for register naming since we
only add gens or platform names as register prefixes when the given
gen/platform changes a register that already existed before. On the
other hand, we have so many instances of IIR/IMR in comments that
adding a prefix would make the users of these register more easily
findable, in addition to make our token pasting macros actually
readable. So IMHO opening an exception here is worth it.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190410235344.31199-4-paulo.r.zanoni@intel.com
5 years agodrm/i915: don't specify the IRQ register in the gen2 macros
Paulo Zanoni [Wed, 10 Apr 2019 23:53:41 +0000 (16:53 -0700)]
drm/i915: don't specify the IRQ register in the gen2 macros

Like the gen3+ macros, the gen2 versions of the IRQ initialization
macros take the register name in the 'type' argument. But gen2 only
has one set of registers, so there's really no need to specify the
type. This commit removes the type argument and uses the registers
directly instead of passing them through variables.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190410235344.31199-3-paulo.r.zanoni@intel.com
5 years agodrm/i915: refactor the IRQ init/reset macros
Paulo Zanoni [Wed, 10 Apr 2019 23:53:40 +0000 (16:53 -0700)]
drm/i915: refactor the IRQ init/reset macros

The whole point of having macros here is for the token pasting
necessary to automatically have IMR, IIR and IER selected. We don't
really need or want all the inlining that happens as a consequence.
The good thing about the current code is that it works regardless of
the relative offsets between these registers (they change after gen4,
with the usual VLV/CHV exceptions).

One thing which we can do is to split the logic of what we do with
imr/ier/iir to functions separate from the macros that pick them.
That's what we do in this commit. This allows us to get rid of the
gen8 duplicates and also all the inlining:

add/remove: 2/0 grow/shrink: 0/21 up/down: 384/-5949 (-5565)
Function                                     old     new   delta
gen3_irq_reset                                 -     233    +233
gen3_irq_init                                  -     151    +151
i8xx_irq_postinstall                         459     442     -17
gen11_irq_postinstall                        804     744     -60
ironlake_irq_postinstall                     450     353     -97
vlv_display_irq_postinstall                  348     245    -103
i965_irq_postinstall                         378     272    -106
i915_irq_postinstall                         333     227    -106
gen8_irq_power_well_post_enable              374     240    -134
ironlake_irq_reset                           397     218    -179
vlv_display_irq_reset                        616     433    -183
i965_irq_reset                               374     180    -194
cherryview_irq_reset                         379     185    -194
i915_irq_reset                               407     209    -198
ibx_irq_reset                                332     133    -199
gen5_gt_irq_postinstall                      533     332    -201
gen8_irq_power_well_pre_disable              434     204    -230
gen8_gt_irq_postinstall                      469     196    -273
gen8_de_irq_postinstall                     1200     836    -364
gen5_gt_irq_reset                            471      76    -395
gen8_gt_irq_reset                            775      99    -676
gen8_irq_reset                              1100     333    -767
gen11_irq_reset                             1959     686   -1273
Total: Before=2259222, After=2253657, chg -0.25%

v2:
 - Make checkpatch happy with a temporary which_ (Checkpatch).
 - Reorder the arguments for the INIT macros (Ville).
 - Correctly explain when the register offsets change in the commit
   message (Ville).
 - Use more line breaks in the macro calls to make the arguments look
   a little more organized/readable.
 - Update the bloat-o-meter output (minor change only).

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (v1)
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190410235344.31199-2-paulo.r.zanoni@intel.com
5 years agodrm: aspeed: Clean up Kconfig options
Joel Stanley [Fri, 5 Apr 2019 08:11:17 +0000 (18:41 +1030)]
drm: aspeed: Clean up Kconfig options

The GFX IP is inside of the ASPEED BMC SoC so there is little use
enabling it on a kernel that does not support ASPEED.

When building with COMPILE_TEST the architecture many not have CMA
support, so to avoid breaking the build we only select these options if
the architecture supports the contiguous allocator.

I suspect the DRM_PANEL came from a cut/paste error.

Fixes: 4f2a8f5898ec ("drm: Add ASPEED GFX driver")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190405081117.27339-1-joel@jms.id.au
5 years agoMerge tag 'gvt-next-2019-04-16' of https://github.com/intel/gvt-linux into drm-intel...
Joonas Lahtinen [Tue, 16 Apr 2019 13:45:26 +0000 (16:45 +0300)]
Merge tag 'gvt-next-2019-04-16' of https://github.com/intel/gvt-linux into drm-intel-next-queued

gvt-next-2019-04-16

- Refine range of MCHBAR snapshot (Yakui)
- Refine out-of-sync page struct (Yakui)
- Remove unused vGPU sreg (Yan)
- Refind MMIO reg names (Xiaolin)
- Proper handling of sync/async flip (Colin)
- Proper handling of PIPE_CONTROL/MI_FLUSH_DW index mode (Xiaolin)
- EXCC reg mask fix (Colin)

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
From: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190416084814.GH17995@zhen-hp.sh.intel.com
5 years agodma-buf: explicitely note that dma-fence-chains use 64bit seqno
Christian König [Mon, 15 Apr 2019 12:46:34 +0000 (14:46 +0200)]
dma-buf: explicitely note that dma-fence-chains use 64bit seqno

Instead of checking the upper values of the sequence number use an explicit
field in the dma_fence_ops structure to note if a sequence should be 32bit
or 64bit.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Link: https://patchwork.freedesktop.org/patch/299655/
5 years agodrm/i915: Mark up ips for RCU protection
Chris Wilson [Fri, 12 Apr 2019 08:53:22 +0000 (09:53 +0100)]
drm/i915: Mark up ips for RCU protection

drivers/gpu/drm/i915/intel_pm.c:8352:9: error: incompatible types in comparison expression (different address spaces)
drivers/gpu/drm/i915/intel_pm.c:8359:9: error: incompatible types in comparison expression (different address spaces)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190412085410.10392-3-chris@chris-wilson.co.uk
5 years agodrm/i915: Drop bool return from breadcrumbs signaler
Chris Wilson [Tue, 16 Apr 2019 08:52:18 +0000 (09:52 +0100)]
drm/i915: Drop bool return from breadcrumbs signaler

Since removal of the "missed interrupt detection" nobody used the result
of whether or not we signaled anybody during that invocation, so now
remove the return value.

References: 789659f4307a ("drm/i915: Drop fake breadcrumb irq")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190416085218.431-1-chris@chris-wilson.co.uk
5 years agodrm/i915/gvt: Fix incorrect mask of mmio 0x22028 in gen8/9 mmio list
Colin Xu [Mon, 1 Apr 2019 06:13:53 +0000 (14:13 +0800)]
drm/i915/gvt: Fix incorrect mask of mmio 0x22028 in gen8/9 mmio list

According to GFX PRM on 01.org, bit 31:16 of mmio 0x22028 should be masks.

Fixes: 178657139307 ("drm/i915/gvt: vGPU context switch")
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Colin Xu <colin.xu@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
5 years agodrm/i915/gvt: addressed guest GPU hang with HWS index mode
Xiaolin Zhang [Wed, 3 Apr 2019 08:28:04 +0000 (16:28 +0800)]
drm/i915/gvt: addressed guest GPU hang with HWS index mode

with the introduce of "switch to use HWS indices rather than address",
guest GPU hang observed when running workloads which will update the
seqno to the real HW HWSP, not vitural GPU HWSP and then cause GPU hang.

this patch is to revoke index mode in PIPE_CTRL and MI_FLUSH_DW and
patch guest GPU HWSP address value to these commands.

Fixes: 54939ea0bd85 ("drm/i915: Switch to use HWS indices rather than addresses")
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Xiaolin Zhang <xiaolin.zhang@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
5 years agoMerge tag 'drm-intel-next-2019-04-04' into gvt-next
Zhenyu Wang [Tue, 16 Apr 2019 08:50:34 +0000 (16:50 +0800)]
Merge tag 'drm-intel-next-2019-04-04' into gvt-next

Merge back drm-intel-next for engine name definition refinement
and 54939ea0bd85 ("drm/i915: Switch to use HWS indices rather than addresses")
that would need gvt fixes to depend on.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
5 years agodrm/i915: Nuke drm_crtc_state and use intel_atomic_state instead
Manasi Navare [Mon, 15 Apr 2019 18:22:10 +0000 (11:22 -0700)]
drm/i915: Nuke drm_crtc_state and use intel_atomic_state instead

This is one of the patches to start replacing drm pointers
and use the intel_atomic_state and intel_crtc to derive
the necessary intel state variables required for the intel
modeset functions.

v3:
* Remove the unwanted newline (Ville)
v2:
* Flip the function arguments (Ville)
* Remove some remaining instances of drm pointers (Ville)
* Use old_crtc_state and new_crtc_state (Ville)

Suggested-by: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Signed-off-by: Manasi Navare <manasi.d.navare@intel.com>
Reviewed-by: Ville Syrjala <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190415182210.13347-1-manasi.d.navare@intel.com
5 years agodrm/i915/selftests: Skip live timeline/suspend tests if wedged
Chris Wilson [Sat, 13 Apr 2019 12:58:20 +0000 (13:58 +0100)]
drm/i915/selftests: Skip live timeline/suspend tests if wedged

If the driver is wedged, we can not issue the requests to exercise the
timelines or the system across suspend, so skip the tests. live_hangcheck
is there to fail if we cannot recover.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190413125820.14112-4-chris@chris-wilson.co.uk
5 years agoBackMerge v5.1-rc5 into drm-next
Dave Airlie [Mon, 15 Apr 2019 05:51:49 +0000 (15:51 +1000)]
BackMerge v5.1-rc5 into drm-next

Need rc5 for udl fix to add udl cleanups on top.

Signed-off-by: Dave Airlie <airlied@redhat.com>
5 years agoLinux 5.1-rc5
Linus Torvalds [Sun, 14 Apr 2019 22:17:41 +0000 (15:17 -0700)]
Linux 5.1-rc5

5 years agoMerge branch 'page-refs' (page ref overflow)
Linus Torvalds [Sun, 14 Apr 2019 22:09:40 +0000 (15:09 -0700)]
Merge branch 'page-refs' (page ref overflow)

Merge page ref overflow branch.

Jann Horn reported that he can overflow the page ref count with
sufficient memory (and a filesystem that is intentionally extremely
slow).

Admittedly it's not exactly easy.  To have more than four billion
references to a page requires a minimum of 32GB of kernel memory just
for the pointers to the pages, much less any metadata to keep track of
those pointers.  Jann needed a total of 140GB of memory and a specially
crafted filesystem that leaves all reads pending (in order to not ever
free the page references and just keep adding more).

Still, we have a fairly straightforward way to limit the two obvious
user-controllable sources of page references: direct-IO like page
references gotten through get_user_pages(), and the splice pipe page
duplication.  So let's just do that.

* branch page-refs:
  fs: prevent page refcount overflow in pipe_buf_get
  mm: prevent get_user_pages() from overflowing page refcount
  mm: add 'try_get_page()' helper function
  mm: make page ref count overflow check tighter and more explicit

5 years agofs: prevent page refcount overflow in pipe_buf_get
Matthew Wilcox [Fri, 5 Apr 2019 21:02:10 +0000 (14:02 -0700)]
fs: prevent page refcount overflow in pipe_buf_get

Change pipe_buf_get() to return a bool indicating whether it succeeded
in raising the refcount of the page (if the thing in the pipe is a page).
This removes another mechanism for overflowing the page refcount.  All
callers converted to handle a failure.

Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agomm: prevent get_user_pages() from overflowing page refcount
Linus Torvalds [Thu, 11 Apr 2019 17:49:19 +0000 (10:49 -0700)]
mm: prevent get_user_pages() from overflowing page refcount

If the page refcount wraps around past zero, it will be freed while
there are still four billion references to it.  One of the possible
avenues for an attacker to try to make this happen is by doing direct IO
on a page multiple times.  This patch makes get_user_pages() refuse to
take a new page reference if there are already more than two billion
references to the page.

Reported-by: Jann Horn <jannh@google.com>
Acked-by: Matthew Wilcox <willy@infradead.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agomm: add 'try_get_page()' helper function
Linus Torvalds [Thu, 11 Apr 2019 17:14:59 +0000 (10:14 -0700)]
mm: add 'try_get_page()' helper function

This is the same as the traditional 'get_page()' function, but instead
of unconditionally incrementing the reference count of the page, it only
does so if the count was "safe".  It returns whether the reference count
was incremented (and is marked __must_check, since the caller obviously
has to be aware of it).

Also like 'get_page()', you can't use this function unless you already
had a reference to the page.  The intent is that you can use this
exactly like get_page(), but in situations where you want to limit the
maximum reference count.

The code currently does an unconditional WARN_ON_ONCE() if we ever hit
the reference count issues (either zero or negative), as a notification
that the conditional non-increment actually happened.

NOTE! The count access for the "safety" check is inherently racy, but
that doesn't matter since the buffer we use is basically half the range
of the reference count (ie we look at the sign of the count).

Acked-by: Matthew Wilcox <willy@infradead.org>
Cc: Jann Horn <jannh@google.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agomm: make page ref count overflow check tighter and more explicit
Linus Torvalds [Thu, 11 Apr 2019 17:06:20 +0000 (10:06 -0700)]
mm: make page ref count overflow check tighter and more explicit

We have a VM_BUG_ON() to check that the page reference count doesn't
underflow (or get close to overflow) by checking the sign of the count.

That's all fine, but we actually want to allow people to use a "get page
ref unless it's already very high" helper function, and we want that one
to use the sign of the page ref (without triggering this VM_BUG_ON).

Change the VM_BUG_ON to only check for small underflows (or _very_ close
to overflowing), and ignore overflows which have strayed into negative
territory.

Acked-by: Matthew Wilcox <willy@infradead.org>
Cc: Jann Horn <jannh@google.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5 years agoMerge tag 'for-linus-20190412' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 13 Apr 2019 23:23:16 +0000 (16:23 -0700)]
Merge tag 'for-linus-20190412' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "Set of fixes that should go into this round. This pull is larger than
  I'd like at this time, but there's really no specific reason for that.
  Some are fixes for issues that went into this merge window, others are
  not. Anyway, this contains:

   - Hardware queue limiting for virtio-blk/scsi (Dongli)

   - Multi-page bvec fixes for lightnvm pblk

   - Multi-bio dio error fix (Jason)

   - Remove the cache hint from the io_uring tool side, since we didn't
     move forward with that (me)

   - Make io_uring SETUP_SQPOLL root restricted (me)

   - Fix leak of page in error handling for pc requests (Jérôme)

   - Fix BFQ regression introduced in this merge window (Paolo)

   - Fix break logic for bio segment iteration (Ming)

   - Fix NVMe cancel request error handling (Ming)

   - NVMe pull request with two fixes (Christoph):
       - fix the initial CSN for nvme-fc (James)
       - handle log page offsets properly in the target (Keith)"

* tag 'for-linus-20190412' of git://git.kernel.dk/linux-block:
  block: fix the return errno for direct IO
  nvmet: fix discover log page when offsets are used
  nvme-fc: correct csn initialization and increments on error
  block: do not leak memory in bio_copy_user_iov()
  lightnvm: pblk: fix crash in pblk_end_partial_read due to multipage bvecs
  nvme: cancel request synchronously
  blk-mq: introduce blk_mq_complete_request_sync()
  scsi: virtio_scsi: limit number of hw queues by nr_cpu_ids
  virtio-blk: limit number of hw queues by nr_cpu_ids
  block, bfq: fix use after free in bfq_bfqq_expire
  io_uring: restrict IORING_SETUP_SQPOLL to root
  tools/io_uring: remove IOCQE_FLAG_CACHEHIT
  block: don't use for-inside-for in bio_for_each_segment_all

5 years agoMerge tag 'nfs-for-5.1-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Sat, 13 Apr 2019 21:47:06 +0000 (14:47 -0700)]
Merge tag 'nfs-for-5.1-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 "Highlights include:

  Stable fix:

   - Fix a deadlock in close() due to incorrect draining of RDMA queues

  Bugfixes:

   - Revert "SUNRPC: Micro-optimise when the task is known not to be
     sleeping" as it is causing stack overflows

   - Fix a regression where NFSv4 getacl and fs_locations stopped
     working

   - Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family.

   - Fix xfstests failures due to incorrect copy_file_range() return
     values"

* tag 'nfs-for-5.1-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  Revert "SUNRPC: Micro-optimise when the task is known not to be sleeping"
  NFSv4.1 fix incorrect return value in copy_file_range
  xprtrdma: Fix helper that drains the transport
  NFS: Fix handling of reply page vector
  NFS: Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family.

5 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 13 Apr 2019 21:37:49 +0000 (14:37 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fix from James Bottomley:
 "One obvious fix for a ciostor data corruption on error bug"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: csiostor: fix missing data copy in csio_scsi_err_handler()

5 years agoMerge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 13 Apr 2019 21:33:56 +0000 (14:33 -0700)]
Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "Here's more than a handful of clk driver fixes for changes that came
  in during the merge window:

   - Fix the AT91 sama5d2 programmable clk prescaler formula

   - A bunch of Amlogic meson clk driver fixes for the VPU clks

   - A DMI quirk for Intel's Bay Trail SoC's driver to properly mark pmc
     clks as critical only when really needed

   - Stop overwriting CLK_SET_RATE_PARENT flag in mediatek's clk gate
     implementation

   - Use the right structure to test for a frequency table in i.MX's
     PLL_1416x driver"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: imx: Fix PLL_1416X not rounding rates
  clk: mediatek: fix clk-gate flag setting
  platform/x86: pmc_atom: Drop __initconst on dmi table
  clk: x86: Add system specific quirk to mark clocks as critical
  clk: meson: vid-pll-div: remove warning and return 0 on invalid config
  clk: meson: pll: fix rounding and setting a rate that matches precisely
  clk: meson-g12a: fix VPU clock parents
  clk: meson: g12a: fix VPU clock muxes mask
  clk: meson-gxbb: round the vdec dividers to closest
  clk: at91: fix programmable clock for sama5d2

5 years agoMerge tag 'pci-v5.1-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Linus Torvalds [Sat, 13 Apr 2019 21:29:21 +0000 (14:29 -0700)]
Merge tag 'pci-v5.1-fixes-2' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Add a DMA alias quirk for another Marvell SATA device (Andre
   Przywara)

 - Fix a pciehp regression that broke safe removal of devices (Sergey
   Miroshnichenko)

* tag 'pci-v5.1-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: pciehp: Ignore Link State Changes after powering off a slot
  PCI: Add function 1 DMA alias quirk for Marvell 9170 SATA controller

5 years agoMerge tag 'powerpc-5.1-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sat, 13 Apr 2019 16:03:09 +0000 (09:03 -0700)]
Merge tag 'powerpc-5.1-5' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "A minor build fix for 64-bit FLATMEM configs.

  A fix for a boot failure on 32-bit powermacs.

  My commit to fix CLOCK_MONOTONIC across Y2038 broke the 32-bit VDSO on
  64-bit kernels, ie. compat mode, which is only used on big endian.

  The rewrite of the SLB code we merged in 4.20 missed the fact that the
  0x380 exception is also used with the Radix MMU to report out of range
  accesses. This could lead to an oops if userspace tried to read from
  addresses outside the user or kernel range.

  Thanks to: Aneesh Kumar K.V, Christophe Leroy, Larry Finger, Nicholas
  Piggin"

* tag 'powerpc-5.1-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/mm: Define MAX_PHYSMEM_BITS for all 64-bit configs
  powerpc/64s/radix: Fix radix segment exception handling
  powerpc/vdso32: fix CLOCK_MONOTONIC on PPC64
  powerpc/32: Fix early boot failure with RTAS built-in

5 years agoMerge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Linus Torvalds [Sat, 13 Apr 2019 15:57:00 +0000 (08:57 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "The main thing is a fix to our FUTEX_WAKE_OP implementation which was
  unbelievably broken, but did actually work for the one scenario that
  GLIBC used to use.

  Summary:

   - Fix stack unwinding so we ignore user stacks

   - Fix ftrace module PLT trampoline initialisation checks

   - Fix terminally broken implementation of FUTEX_WAKE_OP atomics"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: futex: Fix FUTEX_WAKE_OP atomic ops with non-zero result value
  arm64: backtrace: Don't bother trying to unwind the userspace stack
  arm64/ftrace: fix inadvertent BUG() in trampoline check

5 years agodrm/i915: Teach intel_workarounds to use uncore mmio access
Chris Wilson [Fri, 12 Apr 2019 20:24:57 +0000 (21:24 +0100)]
drm/i915: Teach intel_workarounds to use uncore mmio access

Start weaning ourselves off the implicit I915_WRITE macro madness and
start using the explicit intel_uncore mmio access.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190412202458.10653-1-chris@chris-wilson.co.uk
5 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 13 Apr 2019 03:54:40 +0000 (20:54 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Fix typos in user-visible resctrl parameters, and also fix assembly
  constraint bugs that might result in miscompilation"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/asm: Use stricter assembly constraints in bitops
  x86/resctrl: Fix typos in the mba_sc mount option

5 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 13 Apr 2019 03:52:28 +0000 (20:52 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer fix from Ingo Molnar:
 "Fix the alarm_timer_remaining() return value"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  alarmtimer: Return correct remaining time

5 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 13 Apr 2019 03:50:43 +0000 (20:50 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fix from Ingo Molnar:
 "Fix a NULL pointer dereference crash in certain environments"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Do not re-read ->h_load_next during hierarchical load calculation

5 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 13 Apr 2019 03:42:30 +0000 (20:42 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Six kernel side fixes: three related to NMI handling on AMD systems, a
  race fix, a kexec initialization fix and a PEBS sampling fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Fix perf_event_disable_inatomic() race
  x86/perf/amd: Remove need to check "running" bit in NMI handler
  x86/perf/amd: Resolve NMI latency issues for active PMCs
  x86/perf/amd: Resolve race condition when disabling PMC
  perf/x86/intel: Initialize TFA MSR
  perf/x86/intel: Fix handling of wakeup_events for multi-entry PEBS

5 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 13 Apr 2019 03:31:08 +0000 (20:31 -0700)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull locking fix from Ingo Molnar:
 "Fixes a crash when accessing /proc/lockdep"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/lockdep: Zap lock classes even with lock debugging disabled

5 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 13 Apr 2019 03:21:59 +0000 (20:21 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Ingo Molnar:
 "Two genirq fixes, plus an irqchip driver error handling fix"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  genirq: Respect IRQCHIP_SKIP_SET_WAKE in irq_chip_set_wake_parent()
  genirq: Initialize request_mutex if CONFIG_SPARSE_IRQ=n
  irqchip/irq-ls1x: Missing error code in ls1x_intc_of_init()

5 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 13 Apr 2019 03:13:13 +0000 (20:13 -0700)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull core fixes from Ingo Molnar:
 "Fix an objtool warning plus fix a u64_to_user_ptr() macro expansion
  bug"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Add rewind_stack_do_exit() to the noreturn list
  linux/kernel.h: Use parentheses around argument in u64_to_user_ptr()

5 years agodrm/i915/ehl: Inherit Ice Lake conditional code
Bob Paauwe [Fri, 12 Apr 2019 18:09:20 +0000 (11:09 -0700)]
drm/i915/ehl: Inherit Ice Lake conditional code

Most of the conditional code for ICELAKE also applies to ELKHARTLAKE
so use IS_GEN(dev_priv, 11) even for PM and Workarounds for now.

v2: - Rename commit (Jose)
    - Include a wm workaround (Jose and Lucas)
    - Include display core init (Jose and Lucas)
v3: Add a missing case of gen greater-than 11 (Jose)

Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Bob Paauwe <bob.j.paauwe@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190412180920.22347-1-rodrigo.vivi@intel.com
5 years agoclk: imx: Fix PLL_1416X not rounding rates
Leonard Crestez [Fri, 12 Apr 2019 14:10:03 +0000 (14:10 +0000)]
clk: imx: Fix PLL_1416X not rounding rates

Code which initializes the "clk_init_data.ops" checks pll->rate_table
before that field is ever assigned to so it always picks
"clk_pll1416x_min_ops".

This breaks dynamic rate rounding for features such as cpufreq.

Fix by checking pll_clk->rate_table instead, here pll_clk refers to
the constant initialization data coming from per-soc clk driver.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Fixes: 8646d4dcc7fb ("clk: imx: Add PLLs driver for imx8mm soc")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
5 years agodrm/panfrost: Add support for 2MB page entries
Rob Herring [Thu, 11 Apr 2019 21:53:13 +0000 (16:53 -0500)]
drm/panfrost: Add support for 2MB page entries

Add support for 2MB sized pages. This will improve our map and unmap
times and save a bit of memory by avoiding 3rd level page tables for
contiguous allocations.

As we use shmem for buffers and huge page allocations for shmem are off
by default, there isn't an improvement out of the box and userspace must
enable THP for shmem.

It's not clear if the h/w can support 1GB page sizes which standard
ARM long format descriptors support. In any case, it is unlikely we'll
see any contiguous 1GB allocations on current h/w.

Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190411215313.1937-1-robh@kernel.org
5 years agodrm/i915: Handle catastrophic error on engine reset
Mika Kuoppala [Fri, 12 Apr 2019 16:53:53 +0000 (19:53 +0300)]
drm/i915: Handle catastrophic error on engine reset

If cat error is set, we need to clear it by acking it. Further,
if it is set, we must not do a normal request for reset.

v2: avoid goto (Chris)
v3: comment, error format, direct assign (Chris)
Bspec: 12567
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190412165353.16432-1-mika.kuoppala@linux.intel.com
5 years agodrm/i915: Shortcut readiness to reset check
Mika Kuoppala [Fri, 12 Apr 2019 16:53:35 +0000 (19:53 +0300)]
drm/i915: Shortcut readiness to reset check

If the engine says it is ready for reset, it is ready
so avoid further dancing and proceed.

v2: reg (Chris)
v3: request, ack, mask from following patch (Chris)

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190412165335.16347-1-mika.kuoppala@linux.intel.com
5 years agodrm/panfrost: Add initial panfrost driver
Rob Herring [Mon, 10 Sep 2018 19:27:58 +0000 (14:27 -0500)]
drm/panfrost: Add initial panfrost driver

This adds the initial driver for panfrost which supports Arm Mali
Midgard and Bifrost family of GPUs. Currently, only the T860 and
T760 Midgard GPUs have been tested.

v2:
- Add GPU reset on job hangs (Tomeu)
- Add RuntimePM and devfreq support (Tomeu)
- Fix T760 support (Tomeu)
- Add a TODO file (Rob, Tomeu)
- Support multiple in fences (Tomeu)
- Drop support for shared fences (Tomeu)
- Fill in MMU de-init (Rob)
- Move register definitions back to single header (Rob)
- Clean-up hardcoded job submit todos (Rob)
- Implement feature setup based on features/issues (Rob)
- Add remaining Midgard DT compatible strings (Rob)

v3:
- Add support for reset lines (Neil)
- Add a MAINTAINERS entry (Rob)
- Call dma_set_mask_and_coherent (Rob)
- Do MMU invalidate on map and unmap. Restructure to do a single
  operation per map/unmap call. (Rob)
- Add a missing explicit padding to struct drm_panfrost_create_bo (Rob)
- Fix 0-day error: "panfrost_devfreq.c:151:9-16: ERROR: PTR_ERR applied after initialization to constant on line 150"
- Drop HW_FEATURE_AARCH64_MMU conditional (Rob)
- s/DRM_PANFROST_PARAM_GPU_ID/DRM_PANFROST_PARAM_GPU_PROD_ID/ (Rob)
- Check drm_gem_shmem_prime_import_sg_table() error code (Rob)
- Re-order power on sequence (Rob)
- Move panfrost_acquire_object_fences() before scheduling job (Rob)
- Add NULL checks on array pointers in job clean-up (Rob)
- Rework devfreq (Tomeu)
- Fix devfreq init with no regulator (Rob)
- Various WS and comments clean-up (Rob)

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Lyude Paul <lyude@redhat.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Marty E. Plummer <hanetzer@startmail.com>
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190409205427.6943-4-robh@kernel.org
5 years agodrm: Add a drm_gem_objects_lookup helper
Rob Herring [Fri, 8 Mar 2019 20:26:02 +0000 (14:26 -0600)]
drm: Add a drm_gem_objects_lookup helper

Similar to the single handle drm_gem_object_lookup(),
drm_gem_objects_lookup() takes an array of handles and returns an array
of GEM objects.

v2:
- Take the userspace pointer directly and allocate the array.
- Expand the function documentation.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Acked-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190409205427.6943-3-robh@kernel.org
5 years agoiommu: io-pgtable: Add ARM Mali midgard MMU page table format
Rob Herring [Thu, 21 Feb 2019 20:23:25 +0000 (14:23 -0600)]
iommu: io-pgtable: Add ARM Mali midgard MMU page table format

ARM Mali midgard GPU is similar to standard 64-bit stage 1 page tables, but
have a few differences. Add a new format type to represent the format. The
input address size is 48-bits and the output address size is 40-bits (and
possibly less?). Note that the later bifrost GPUs follow the standard
64-bit stage 1 format.

The differences in the format compared to 64-bit stage 1 format are:

The 3rd level page entry bits are 0x1 instead of 0x3 for page entries.

The access flags are not read-only and unprivileged, but read and write.
This is similar to stage 2 entries, but the memory attributes field matches
stage 1 being an index.

The nG bit is not set by the vendor driver. This one didn't seem to matter,
but we'll keep it aligned to the vendor driver.

Cc: Will Deacon <will.deacon@arm.com>
Acked-by: Robin Murphy <robin.murphy@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: iommu@lists.linux-foundation.org
Acked-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Acked-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190409205427.6943-2-robh@kernel.org
5 years agoclk: mediatek: fix clk-gate flag setting
Weiyi Lu [Fri, 12 Apr 2019 03:30:27 +0000 (11:30 +0800)]
clk: mediatek: fix clk-gate flag setting

CLK_SET_RATE_PARENT would be dropped.
Merge two flag setting together to correct the error.

Fixes: 5a1cc4c27ad2 ("clk: mediatek: Add flags to mtk_gate")
Cc: <stable@vger.kernel.org>
Signed-off-by: Weiyi Lu <weiyi.lu@mediatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
5 years agoMerge tag 'dma-mapping-5.1-1' of git://git.infradead.org/users/hch/dma-mapping
Linus Torvalds [Fri, 12 Apr 2019 15:25:16 +0000 (08:25 -0700)]
Merge tag 'dma-mapping-5.1-1' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fixes from Christoph Hellwig:
 "Fix a sparc64 sun4v_pci regression introduced in this merged window,
  and a dma-debug stracktrace regression from the big refactor last
  merge window"

* tag 'dma-mapping-5.1-1' of git://git.infradead.org/users/hch/dma-mapping:
  dma-debug: only skip one stackframe entry
  sparc64/pci_sun4v: fix ATU checks for large DMA masks

5 years agoMerge tag 'iommu-fix-v5.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro...
Linus Torvalds [Fri, 12 Apr 2019 15:21:15 +0000 (08:21 -0700)]
Merge tag 'iommu-fix-v5.1-rc5' of git://git./linux/kernel/git/joro/iommu

Pull IOMMU fix from Joerg Roedel:
 "Fix an AMD IOMMU issue where the driver didn't correctly setup the
  exclusion range in the hardware registers, resulting in exclusion
  ranges being one page too big.

  This can cause data corruption of the address of that last page is
  used by DMA operations"

* tag 'iommu-fix-v5.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/amd: Set exclusion range correctly

5 years agoMerge tag 'clang-format-for-linus-v5.1-rc5' of git://github.com/ojeda/linux
Linus Torvalds [Fri, 12 Apr 2019 15:18:37 +0000 (08:18 -0700)]
Merge tag 'clang-format-for-linus-v5.1-rc5' of git://github.com/ojeda/linux

Pull clang-format update from Miguel Ojeda:
 "The usual roughly-per-release .clang-format macro list update"

* tag 'clang-format-for-linus-v5.1-rc5' of git://github.com/ojeda/linux:
  clang-format: Update with the latest for_each macro list

5 years agoMerge tag 'mmc-v5.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Fri, 12 Apr 2019 15:16:40 +0000 (08:16 -0700)]
Merge tag 'mmc-v5.1-rc2' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC host fixes from Ulf Hansson:

 - alcor: Stabilize data write requests

 - sdhci-omap: Fix command error path during tuning

* tag 'mmc-v5.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-omap: Don't finish_mrq() on a command error during tuning
  mmc: alcor: don't write data before command has completed

5 years agoMerge tag 'sound-5.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 12 Apr 2019 15:11:59 +0000 (08:11 -0700)]
Merge tag 'sound-5.1-rc5' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Well, this one became unpleasantly larger than previous pull requests,
  but it's a kind of usual pattern: now it contains a collection of ASoC
  fixes, and nothing to worry too much.

  The fixes for ASoC core (DAPM, DPCM, topology) are all small and just
  covering corner cases. The rest changes are driver-specific, many of
  which are for x86 platforms and new drivers like STM32, in addition to
  the usual fixups for HD-audio"

* tag 'sound-5.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (66 commits)
  ASoC: wcd9335: Fix missing regmap requirement
  ALSA: hda: Fix racy display power access
  ASoC: pcm: fix error handling when try_module_get() fails.
  ASoC: stm32: sai: fix master clock management
  ASoC: Intel: kbl: fix wrong number of channels
  ALSA: hda - Add two more machines to the power_save_blacklist
  ASoC: pcm: update module refcount if module_get_upon_open is set
  ASoC: core: conditionally increase module refcount on component open
  ASoC: stm32: fix sai driver name initialisation
  ASoC: topology: Use the correct dobj to free enum control values and texts
  ALSA: seq: Fix OOB-reads from strlcpy
  ASoC: intel: skylake: add remove() callback for component driver
  ASoC: cs35l35: Disable regulators on driver removal
  ALSA: xen-front: Do not use stream buffer size before it is set
  ASoC: rockchip: pdm: change dma burst to 8
  ASoC: rockchip: pdm: fix regmap_ops hang issue
  ASoC: simple-card: don't select DPCM via simple-audio-card
  ASoC: audio-graph-card: don't select DPCM via audio-graph-card
  ASoC: tlv320aic32x4: Change author's name
  ALSA: hda/realtek - Add quirk for Tuxedo XC 1509
  ...

5 years agoMerge tag 'acpi-5.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 12 Apr 2019 15:07:46 +0000 (08:07 -0700)]
Merge tag 'acpi-5.1-rc5' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Fix an ACPICA issue introduced during the 4.20 development cycle and
  causing some systems to crash because of leftover operation region
  data still maintained after the operation region in question has gone
  away (Erik Schmauss)"

* tag 'acpi-5.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPICA: Namespace: remove address node from global list after method termination

5 years agoMerge tag 'drm-fixes-2019-04-12' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 12 Apr 2019 15:04:01 +0000 (08:04 -0700)]
Merge tag 'drm-fixes-2019-04-12' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Fixes across the driver spectrum this week, the mediatek fbdev support
  might be a bit late for this round, but I looked over it and it's not
  very large and seems like a useful feature for them.

  Otherwise the main thing is a regression fix for i915 5.0 bug that
  caused black screens on a bunch of Dell XPS 15s I think, I know at
  least Fedora is waiting for this to land, and the udl fix is also for
  a regression since 5.0 where unplugging the device would end badly.

  core:
   - make atomic hooks optional

  i915:
   - Revert a 5.0 regression where some eDP panels stopped working
   - DSI related fixes for platforms up to IceLake
   - GVT (regression fix, warning fix, use-after free fix)

  amdgpu:
   - Cursor fixes
   - missing PCI ID fix for KFD
   - XGMI fix
   - shadow buffer handling after reset fix

  udl:
   - fix unplugging device crashes.

  mediatek:
   - stabilise MT2701 HDMI support
   - fbdev support

  tegra:
   - fix for build regression in rc1.

  sun4i:
   - Allwinner A6 max freq improvements
   - null ptr deref fix

  dw-hdmi:
   - SCDC configuration improvements

  omap:
   - CEC clock management policy fix"

* tag 'drm-fixes-2019-04-12' of git://anongit.freedesktop.org/drm/drm: (32 commits)
  gpu: host1x: Fix compile error when IOMMU API is not available
  drm/i915/gvt: Roundup fb->height into tile's height at calucation fb->size
  drm/i915/dp: revert back to max link rate and lane count on eDP
  drm/i915/icl: Fix port disable sequence for mipi-dsi
  drm/i915/icl: Ungate ddi clocks before IO enable
  drm/mediatek: no change parent rate in round_rate() for MT2701 hdmi phy
  drm/mediatek: using new factor for tvdpll for MT2701 hdmi phy
  drm/mediatek: remove flag CLK_SET_RATE_PARENT for MT2701 hdmi phy
  drm/mediatek: make implementation of recalc_rate() for MT2701 hdmi phy
  drm/mediatek: fix the rate and divder of hdmi phy for MT2701
  drm/mediatek: fix possible object reference leak
  drm/i915: Get power refs in encoder->get_power_domains()
  drm/i915: Fix pipe_bpp readout for BXT/GLK DSI
  drm/amd/display: Fix negative cursor pos programming (v2)
  drm/sun4i: tcon top: Fix NULL/invalid pointer dereference in sun8i_tcon_top_un/bind
  drm/udl: add a release method and delay modeset teardown
  drm/i915/gvt: Prevent use-after-free in ppgtt_free_all_spt()
  drm/i915/gvt: Annotate iomem usage
  drm/sun4i: DW HDMI: Lower max. supported rate for H6
  Revert "Documentation/gpu/meson: Remove link to meson_canvas.c"
  ...

5 years agoarm64: futex: Fix FUTEX_WAKE_OP atomic ops with non-zero result value
Will Deacon [Mon, 8 Apr 2019 11:45:09 +0000 (12:45 +0100)]
arm64: futex: Fix FUTEX_WAKE_OP atomic ops with non-zero result value

Rather embarrassingly, our futex() FUTEX_WAKE_OP implementation doesn't
explicitly set the return value on the non-faulting path and instead
leaves it holding the result of the underlying atomic operation. This
means that any FUTEX_WAKE_OP atomic operation which computes a non-zero
value will be reported as having failed. Regrettably, I wrote the buggy
code back in 2011 and it was upstreamed as part of the initial arm64
support in 2012.

The reasons we appear to get away with this are:

  1. FUTEX_WAKE_OP is rarely used and therefore doesn't appear to get
     exercised by futex() test applications

  2. If the result of the atomic operation is zero, the system call
     behaves correctly

  3. Prior to version 2.25, the only operation used by GLIBC set the
     futex to zero, and therefore worked as expected. From 2.25 onwards,
     FUTEX_WAKE_OP is not used by GLIBC at all.

Fix the implementation by ensuring that the return value is either 0
to indicate that the atomic operation completed successfully, or -EFAULT
if we encountered a fault when accessing the user mapping.

Cc: <stable@kernel.org>
Fixes: 6170a97460db ("arm64: Atomic operations")
Signed-off-by: Will Deacon <will.deacon@arm.com>
5 years agodrm/i915: Suppress spurious combo PHY B warning
Ville Syrjälä [Thu, 11 Apr 2019 14:33:49 +0000 (17:33 +0300)]
drm/i915: Suppress spurious combo PHY B warning

On ICL the DMC doesn't reinit combo PHY B so we should not warn
about its state being bogus during the display core uninit.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190411143349.17934-1-ville.syrjala@linux.intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
5 years agodrm/i915: Restore correct bxt_ddi_phy_calc_lane_lat_optim_mask() calculation
Ville Syrjälä [Thu, 11 Apr 2019 16:49:25 +0000 (19:49 +0300)]
drm/i915: Restore correct bxt_ddi_phy_calc_lane_lat_optim_mask() calculation

We are no longer calling bxt_ddi_phy_calc_lane_lat_optim_mask() when
intel{hdmi,dp}_compute_config() succeeds, and instead only call it
when those fail. This is fallout from the bool->int
.compute_config() conversion which failed to invert the return
value check before calling bxt_ddi_phy_calc_lane_lat_optim_mask().
Let's just replace it with an early bailout so that it's harder
to miss.

This restores the correct latency optim setting calculation
(which could fix some real failures), and avoids the
MISSING_CASE() from bxt_ddi_phy_calc_lane_lat_optim_mask()
after intel{hdmi,dp}_compute_config() has failed.

Cc: Lyude Paul <lyude@redhat.com>
Fixes: 204474a6b859 ("drm/i915: Pass down rc in intel_encoder->compute_config()")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109373
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190411164925.28491-1-ville.syrjala@linux.intel.com
Reviewed-by: Lyude Paul <lyude@redhat.com>
5 years agodrm/i915: Flush the CSB pointer reset
Chris Wilson [Fri, 12 Apr 2019 11:01:59 +0000 (12:01 +0100)]
drm/i915: Flush the CSB pointer reset

The HW resets it CSB tail pointer on resetting the engine. Most of the
time. In case it doesn't (and for system resume) we write the expected
value anyway. For extra paranoia, flush the write before we invalidate
the cacheline.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Acked-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190412110159.10495-1-chris@chris-wilson.co.uk
5 years agoiommu/amd: Set exclusion range correctly
Joerg Roedel [Fri, 12 Apr 2019 10:50:31 +0000 (12:50 +0200)]
iommu/amd: Set exclusion range correctly

The exlcusion range limit register needs to contain the
base-address of the last page that is part of the range, as
bits 0-11 of this register are treated as 0xfff by the
hardware for comparisons.

So correctly set the exclusion range in the hardware to the
last page which is _in_ the range.

Fixes: b2026aa2dce44 ('x86, AMD IOMMU: add functions for programming IOMMU MMIO space')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
5 years agoclang-format: Update with the latest for_each macro list
Miguel Ojeda [Sat, 30 Mar 2019 08:20:16 +0000 (09:20 +0100)]
clang-format: Update with the latest for_each macro list

Re-run the shell fragment that generated the original list now that
there are two dozens of new entries after v5.1's merge window.

Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
5 years agodrm/bridge: ti-tfp410: Set the bus_format
Peter Ujfalusi [Mon, 1 Apr 2019 12:41:43 +0000 (15:41 +0300)]
drm/bridge: ti-tfp410: Set the bus_format

The TFP410 supports 24 bit, single-edge and 12 bit, dual-edge modes.
Depending on how many wires are used (24/12) the driver can set the correct
bus_format.

If the information is not available in DT then assume 24 bit, single-edge
setup.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Andrzej Hajda <a.hajda@samsung.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190401124143.17179-3-peter.ujfalusi@ti.com
5 years agodt-bindings: display: tfp410: Add bus-width parameter property
Peter Ujfalusi [Mon, 1 Apr 2019 12:41:42 +0000 (15:41 +0300)]
dt-bindings: display: tfp410: Add bus-width parameter property

tfp410 can be connect to host processor in 24bit, single-edge (24 lines) or
12bit, dual-edge (12 lines).

Add bus-width to the documentation so it can be used to select between the
two connection scheme.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190401124143.17179-2-peter.ujfalusi@ti.com
5 years agodrm/bridge: ti-tfp410: Fall back to HPD polling if HPD irq is not available
Peter Ujfalusi [Mon, 1 Apr 2019 12:33:42 +0000 (15:33 +0300)]
drm/bridge: ti-tfp410: Fall back to HPD polling if HPD irq is not available

In case either the HPD gpio is not specified or when the HPD gpio can not
be used as interrupt we should tell the core that the HPD needs to be
polled for detecting hotplug.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190401123342.15767-1-peter.ujfalusi@ti.com
5 years agodrm/i915: Fix the inconsistent RMW in WA 827
Radhakrishna Sripada [Sat, 30 Mar 2019 01:19:20 +0000 (18:19 -0700)]
drm/i915: Fix the inconsistent RMW in WA 827

RMW is used only in the disable path. Using it in enable path
for consistency.

Suggested-by: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190330011921.10397-2-radhakrishna.sripada@intel.com
5 years agodrm/i915: Rename skl_wa_clkgating to the actual WA
Radhakrishna Sripada [Sat, 30 Mar 2019 01:19:19 +0000 (18:19 -0700)]
drm/i915: Rename skl_wa_clkgating to the actual WA

No functional change. Renaming the function to reflect the specific WA.

Suggested-by: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190330011921.10397-1-radhakrishna.sripada@intel.com
5 years agoperf/core: Fix perf_event_disable_inatomic() race
Peter Zijlstra [Thu, 4 Apr 2019 13:03:00 +0000 (15:03 +0200)]
perf/core: Fix perf_event_disable_inatomic() race

Thomas-Mich Richter reported he triggered a WARN()ing from event_function_local()
on his s390. The problem boils down to:

CPU-A CPU-B

perf_event_overflow()
  perf_event_disable_inatomic()
    @pending_disable = 1
    irq_work_queue();

sched-out
  event_sched_out()
    @pending_disable = 0

sched-in
perf_event_overflow()
  perf_event_disable_inatomic()
    @pending_disable = 1;
    irq_work_queue(); // FAILS

irq_work_run()
  perf_pending_event()
    if (@pending_disable)
      perf_event_disable_local(); // WHOOPS

The problem exists in generic, but s390 is particularly sensitive
because it doesn't implement arch_irq_work_raise(), nor does it call
irq_work_run() from it's PMU interrupt handler (nor would that be
sufficient in this case, because s390 also generates
perf_event_overflow() from pmu::stop). Add to that the fact that s390
is a virtual architecture and (virtual) CPU-A can stall long enough
for the above race to happen, even if it would self-IPI.

Adding a irq_work_sync() to event_sched_in() would work for all hardare
PMUs that properly use irq_work_run() but fails for software PMUs.

Instead encode the CPU number in @pending_disable, such that we can
tell which CPU requested the disable. This then allows us to detect
the above scenario and even redirect the IPI to make up for the failed
queue.

Reported-by: Thomas-Mich Richter <tmricht@linux.ibm.com>
Tested-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.ibm.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
5 years agoMerge branch 'drm-next-5.2' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Fri, 12 Apr 2019 04:46:10 +0000 (14:46 +1000)]
Merge branch 'drm-next-5.2' of git://people.freedesktop.org/~agd5f/linux into drm-next

- Fixes for powerplay custom profiles
- DC bandwidth clean ups and fixes
- RAS fixes for vega20
- DC atomic resume fix
- Better plane handling in DC
- Freesync improvements
- Misc bug fixes and cleanups

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190411031242.3337-1-alexander.deucher@amd.com
5 years agoMerge tag 'drm-misc-next-2019-04-10' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Fri, 12 Apr 2019 04:27:37 +0000 (14:27 +1000)]
Merge tag 'drm-misc-next-2019-04-10' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.2:

UAPI Changes:
- None

Cross-subsystem Changes:
-MAINTAINERS: Add moderation flag for lima mailing list (Randy)
-dt-bindings: Add Mali Bifrost bindings (Neil)
-dt-bindings: Add G12A compatibility strings to meson bindings (Neil)

Core Changes:
-Add a handful of format helpers (Gerd)

Driver Changes:
-cirrus: Driver rewrite megapatch (Gerd)
-meson: Add G12A support to meson driver (Neil)
-lima: Couple fixes (Qiang)

Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Qiang Yu <yuq825@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20190410194907.GA108842@art_vandelay
5 years agoMerge tag 'drm-intel-fixes-2019-04-11' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Fri, 12 Apr 2019 03:39:22 +0000 (13:39 +1000)]
Merge tag 'drm-intel-fixes-2019-04-11' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

- Revert back to max link rate and lane count on eDP.
- DSI related fixes for all platforms including Ice Lake.
- GVT Fixes including one vGPU display plane size regression fix,
one for preventing use-after-free in ppgtt shadow free function,
and another warning fix for iomem access annotation.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190411235832.GA6476@intel.com
5 years agoblock: fix the return errno for direct IO
Jason Yan [Fri, 12 Apr 2019 02:09:16 +0000 (10:09 +0800)]
block: fix the return errno for direct IO

If the last bio returned is not dio->bio, the status of the bio will
not assigned to dio->bio if it is error. This will cause the whole IO
status wrong.

    ksoftirqd/21-117   [021] ..s.  4017.966090:   8,0    C   N 4883648 [0]
          <idle>-0     [018] ..s.  4017.970888:   8,0    C  WS 4924800 + 1024 [0]
          <idle>-0     [018] ..s.  4017.970909:   8,0    D  WS 4935424 + 1024 [<idle>]
          <idle>-0     [018] ..s.  4017.970924:   8,0    D  WS 4936448 + 321 [<idle>]
    ksoftirqd/21-117   [021] ..s.  4017.995033:   8,0    C   R 4883648 + 336 [65475]
    ksoftirqd/21-117   [021] d.s.  4018.001988: myprobe1: (blkdev_bio_end_io+0x0/0x168) bi_status=7
    ksoftirqd/21-117   [021] d.s.  4018.001992: myprobe: (aio_complete_rw+0x0/0x148) x0=0xffff802f2595ad80 res=0x12a000 res2=0x0

We always have to assign bio->bi_status to dio->bio.bi_status because we
will only check dio->bio.bi_status when we return the whole IO to
the upper layer.

Fixes: 542ff7bf18c6 ("block: new direct I/O implementation")
Cc: stable@vger.kernel.org
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
5 years agoMerge tag 'for-5.1-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave...
Linus Torvalds [Thu, 11 Apr 2019 21:19:02 +0000 (14:19 -0700)]
Merge tag 'for-5.1-rc4-tag' of git://git./linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:

 - fix parsing of compression algorithm when set as a inode property,
   this could end up with eg. 'zst' or 'zli' in the value

 - don't allow trim on a filesystem with unreplayed log, this could
   cause data loss if there are pending updates to the block groups that
   would not be subject to trim after replay

* tag 'for-5.1-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: prop: fix vanished compression property after failed set
  btrfs: prop: fix zstd compression parameter validation
  Btrfs: do not allow trimming when a fs is mounted with the nologreplay option

5 years agoMerge tag 'drm-misc-fixes-2019-04-11' of git://anongit.freedesktop.org/drm/drm-misc...
Dave Airlie [Thu, 11 Apr 2019 20:55:20 +0000 (06:55 +1000)]
Merge tag 'drm-misc-fixes-2019-04-11' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

 - core: Make atomic_enable and disable optional for CRTC
 - dw-hdmi: Lower max frequency for the Allwinner H6, SCDC configuration
            improvements for older controller versions
 - omap: a fix for the CEC clock management policy

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190411151658.orm46ccd5zmrw27l@flea
5 years agodrm/i915: Do not enable FEC without DSC
Ville Syrjälä [Tue, 26 Mar 2019 14:49:02 +0000 (16:49 +0200)]
drm/i915: Do not enable FEC without DSC

Currently we enable FEC even when DSC is no used. While that is
theoretically valid supposedly there isn't much of a benefit from
this. But more importantly we do not account for the FEC link
bandwidth overhead (2.4%) in the non-DSC link bandwidth computations.
So the code may think we have enough bandwidth when we in fact
do not.

Cc: stable@vger.kernel.org
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Fixes: 240999cf339f ("i915/dp/fec: Add fec_enable to the crtc state.")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190326144903.6617-1-ville.syrjala@linux.intel.com
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
5 years agodrm/i915: Avoid reclaim taints from runtime-pm debug
Chris Wilson [Tue, 9 Apr 2019 17:41:08 +0000 (18:41 +0100)]
drm/i915: Avoid reclaim taints from runtime-pm debug

As intel_runtime_pm_get/_put may be called from any blockable context,
we need to avoid allowing reclaim from our mallocs, as we need to
avoid tainting any mutexes held by the callers (as they may themselves
not allow for allocations as they are taken in the shrinker).

<4> [435.339331] WARNING: possible circular locking dependency detected
<4> [435.339364] 5.1.0-rc4-CI-Trybot_4116+ #1 Tainted: G     U
<4> [435.339395] ------------------------------------------------------
<4> [435.339426] gem_caching/1334 is trying to acquire lock:
<4> [435.339456] 000000004505c39b (wakeref#3){+.+.}, at: intel_engine_pm_put+0x1b/0x40 [i915]
<4> [435.339788]
but task is already holding lock:
<4> [435.339819] 00000000ee77b4ed (fs_reclaim){+.+.}, at: fs_reclaim_acquire.part.24+0x0/0x30
<4> [435.339879]
which lock already depends on the new lock.

<4> [435.339918]
the existing dependency chain (in reverse order) is:
<4> [435.339952]
-> #1 (fs_reclaim){+.+.}:
<4> [435.339998]        fs_reclaim_acquire.part.24+0x24/0x30
<4> [435.340035]        kmem_cache_alloc_trace+0x2a/0x290
<4> [435.340311]        __print_intel_runtime_pm_wakeref+0x24/0x160 [i915]
<4> [435.340590]        untrack_intel_runtime_pm_wakeref+0x16e/0x1d0 [i915]
<4> [435.340869]        intel_runtime_pm_put_unchecked+0xd/0x30 [i915]
<4> [435.341147]        __intel_wakeref_put_once+0x22/0x40 [i915]
<4> [435.341508]        i915_request_retire+0x477/0xaf0 [i915]
<4> [435.341871]        ring_retire_requests+0x86/0x160 [i915]
<4> [435.342226]        i915_retire_requests+0x58/0xc0 [i915]
<4> [435.342576]        retire_work_handler+0x5b/0x70 [i915]
<4> [435.342615]        process_one_work+0x245/0x610
<4> [435.342646]        worker_thread+0x37/0x380
<4> [435.342679]        kthread+0x119/0x130
<4> [435.342714]        ret_from_fork+0x3a/0x50
<4> [435.342739]
-> #0 (wakeref#3){+.+.}:
<4> [435.342788]        lock_acquire+0xa6/0x1c0
<4> [435.342822]        __mutex_lock+0x8c/0x960
<4> [435.342853]        atomic_dec_and_mutex_lock+0x33/0x50
<4> [435.343151]        intel_engine_pm_put+0x1b/0x40 [i915]
<4> [435.343501]        i915_request_retire+0x477/0xaf0 [i915]
<4> [435.343851]        ring_retire_requests+0x86/0x160 [i915]
<4> [435.344202]        i915_retire_requests+0x58/0xc0 [i915]
<4> [435.344543]        i915_gem_shrink+0xd8/0x5b0 [i915]
<4> [435.344835]        i915_drop_caches_set+0x17b/0x250 [i915]
<4> [435.344877]        simple_attr_write+0xb0/0xd0
<4> [435.344911]        full_proxy_write+0x51/0x80
<4> [435.344943]        vfs_write+0xbd/0x1b0
<4> [435.344972]        ksys_write+0x55/0xe0
<4> [435.345002]        do_syscall_64+0x55/0x190
<4> [435.345040]        entry_SYSCALL_64_after_hwframe+0x49/0xbe

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190409174108.19396-1-chris@chris-wilson.co.uk
5 years agodrm/i915/execlists: Always reset the context's RING registers
Chris Wilson [Thu, 11 Apr 2019 13:05:15 +0000 (14:05 +0100)]
drm/i915/execlists: Always reset the context's RING registers

During reset, we try and stop the active ring. This has the consequence
that we often clobber the RING registers within the context image. When
we find an active request, we update the context image to rerun that
request (if it was guilty, we replace the hanging user payload with
NOPs). However, we were ignoring an active context if the request had
completed, with the consequence that the next submission on that request
would start with RING_HEAD==0 and not the tail of the previous request,
causing all requests still in the ring to be rerun. Rare, but
occasionally seen within CI where we would spot that the context seqno
would reverse and complain that we were retiring an incomplete request.

    <0> [412.390350]   <idle>-0       3d.s2 408373352us : __i915_request_submit: rcs0 fence 1e95b:3640 -> current 3638
    <0> [412.390350]   <idle>-0       3d.s2 408373353us : __i915_request_submit: rcs0 fence 1e95b:3642 -> current 3638
    <0> [412.390350]   <idle>-0       3d.s2 408373354us : __i915_request_submit: rcs0 fence 1e95b:3644 -> current 3638
    <0> [412.390350]   <idle>-0       3d.s2 408373354us : __i915_request_submit: rcs0 fence 1e95b:3646 -> current 3638
    <0> [412.390350]   <idle>-0       3d.s2 408373356us : __execlists_submission_tasklet: rcs0 in[0]:  ctx=2.1, fence 1e95b:3646 (current 3638), prio=4
    <0> [412.390350] i915_sel-4613    0.... 408373374us : __i915_request_commit: rcs0 fence 1e95b:3648
    <0> [412.390350] i915_sel-4613    0d..1 408373377us : process_csb: rcs0 cs-irq head=2, tail=3
    <0> [412.390350] i915_sel-4613    0d..1 408373377us : process_csb: rcs0 csb[3]: status=0x00000001:0x00000000, active=0x1
    <0> [412.390350] i915_sel-4613    0d..1 408373378us : __i915_request_submit: rcs0 fence 1e95b:3648 -> current 3638
    <0> [412.390350]   <idle>-0       3..s1 408373378us : execlists_submission_tasklet: rcs0 awake?=1, active=5
    <0> [412.390350] i915_sel-4613    0d..1 408373379us : __execlists_submission_tasklet: rcs0 in[0]:  ctx=2.2, fence 1e95b:3648 (current 3638), prio=4
    <0> [412.390350] i915_sel-4613    0.... 408373381us : i915_reset_engine: rcs0 flags=4
    <0> [412.390350] i915_sel-4613    0.... 408373382us : execlists_reset_prepare: rcs0: depth<-0
    <0> [412.390350]   <idle>-0       3d.s2 408373390us : process_csb: rcs0 cs-irq head=3, tail=4
    <0> [412.390350]   <idle>-0       3d.s2 408373390us : process_csb: rcs0 csb[4]: status=0x00008002:0x00000002, active=0x1
    <0> [412.390350]   <idle>-0       3d.s2 408373390us : process_csb: rcs0 out[0]: ctx=2.2, fence 1e95b:3648 (current 3640), prio=4
    <0> [412.390350] i915_sel-4613    0.... 408373401us : intel_engine_stop_cs: rcs0
    <0> [412.390350] i915_sel-4613    0d..1 408373402us : process_csb: rcs0 cs-irq head=4, tail=4
    <0> [412.390350] i915_sel-4613    0.... 408373403us : intel_gpu_reset: engine_mask=1
    <0> [412.390350] i915_sel-4613    0d..1 408373408us : execlists_cancel_port_requests: rcs0:port0 fence 1e95b:3648, (current 3648)
    <0> [412.390350] i915_sel-4613    0.... 408373442us : intel_engine_cancel_stop_cs: rcs0
    <0> [412.390350] i915_sel-4613    0.... 408373442us : execlists_reset_finish: rcs0: depth->0
    <0> [412.390350] ksoftirq-26      3..s. 408373442us : execlists_submission_tasklet: rcs0 awake?=1, active=0
    <0> [412.390350] ksoftirq-26      3d.s1 408373443us : process_csb: rcs0 cs-irq head=5, tail=5
    <0> [412.390350] i915_sel-4613    0.... 408373475us : i915_request_retire: rcs0 fence 1e95b:3640, current 3648
    <0> [412.390350] i915_sel-4613    0.... 408373476us : i915_request_retire: __retire_engine_request(rcs0) fence 1e95b:3640, current 3648
    <0> [412.390350] i915_sel-4613    0.... 408373494us : __i915_request_commit: rcs0 fence 1e95b:3650
    <0> [412.390350] i915_sel-4613    0d..1 408373496us : process_csb: rcs0 cs-irq head=5, tail=5
    <0> [412.390350] i915_sel-4613    0d..1 408373496us : __i915_request_submit: rcs0 fence 1e95b:3650 -> current 3648
    <0> [412.390350] i915_sel-4613    0d..1 408373498us : __execlists_submission_tasklet: rcs0 in[0]:  ctx=2.1, fence 1e95b:3650 (current 3648), prio=6
    <0> [412.390350] i915_sel-4613    0.... 408373500us : i915_request_retire_upto: rcs0 fence 1e95b:3648, current 3648
    <0> [412.390350] i915_sel-4613    0.... 408373500us : i915_request_retire: rcs0 fence 1e95b:3642, current 3648
    <0> [412.390350] i915_sel-4613    0.... 408373501us : i915_request_retire: __retire_engine_request(rcs0) fence 1e95b:3642, current 3648
    <0> [412.390350] i915_sel-4613    0.... 408373514us : i915_request_retire: rcs0 fence 1e95b:3644, current 3648
    <0> [412.390350] i915_sel-4613    0.... 408373515us : i915_request_retire: __retire_engine_request(rcs0) fence 1e95b:3644, current 3648
    <0> [412.390350] i915_sel-4613    0.... 408373527us : i915_request_retire: rcs0 fence 1e95b:3646, current 3640
    <0> [412.390350]   <idle>-0       3..s1 408373569us : execlists_submission_tasklet: rcs0 awake?=1, active=1
    <0> [412.390350]   <idle>-0       3d.s2 408373569us : process_csb: rcs0 cs-irq head=5, tail=1
    <0> [412.390350]   <idle>-0       3d.s2 408373570us : process_csb: rcs0 csb[0]: status=0x00000001:0x00000000, active=0x1
    <0> [412.390350]   <idle>-0       3d.s2 408373570us : process_csb: rcs0 csb[1]: status=0x00000018:0x00000002, active=0x5
    <0> [412.390350]   <idle>-0       3d.s2 408373570us : process_csb: rcs0 out[0]: ctx=2.1, fence 1e95b:3650 (current 3650), prio=6
    <0> [412.390350]   <idle>-0       3d.s2 408373571us : process_csb: rcs0 completed ctx=2
    <0> [412.390350] i915_sel-4613    0.... 408373621us : i915_request_retire: i915_request_retire:253 GEM_BUG_ON(!i915_request_completed(request))

v2: Fixup the cancellation path to drain the CSB and reset the pointers.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190411130515.20716-2-chris@chris-wilson.co.uk
5 years agodrm/i915/guc: Implement reset locally
Chris Wilson [Thu, 11 Apr 2019 13:05:14 +0000 (14:05 +0100)]
drm/i915/guc: Implement reset locally

Before causing guc and execlists to diverge further (breaking guc in the
process), take a copy of the current reset procedure and make it local to
the guc submission backend

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190411130515.20716-1-chris@chris-wilson.co.uk
5 years agodrm/i915: Disable read only ppgtt support for gen11
Mika Kuoppala [Thu, 11 Apr 2019 08:30:34 +0000 (11:30 +0300)]
drm/i915: Disable read only ppgtt support for gen11

On gen11 writing to read only ppgtt page causes a gpu hang.
This behaviour is different than with previous gen where
read only ppgtt access is supported. On those, the write
is just dropped without visible side effects.

Disable ro ppgtt support on gen11 until a solution can
be found to bring it into line with its predecessors.

References: HSDES#1807136187
References: https://bugzilla.freedesktop.org/show_bug.cgi?id=108569
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190411083034.28311-1-mika.kuoppala@linux.intel.com
5 years agodrm/i915: Call i915_sw_fence_fini on request cleanup
Chris Wilson [Thu, 11 Apr 2019 12:24:45 +0000 (13:24 +0100)]
drm/i915: Call i915_sw_fence_fini on request cleanup

As i915_requests are put into an RCU-freelist, they may get reused
before debugobjects notice them as being freed. On cleanup, explicitly
call i915_sw_fence_fini() so that the debugobject is properly tracked.

Reported-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Fixes: b7404c7ecb38 ("drm/i915: Bump ready tasks ahead of busywaits")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190411122445.20060-1-chris@chris-wilson.co.uk
5 years agoRevert "SUNRPC: Micro-optimise when the task is known not to be sleeping"
Trond Myklebust [Thu, 11 Apr 2019 19:16:52 +0000 (15:16 -0400)]
Revert "SUNRPC: Micro-optimise when the task is known not to be sleeping"

This reverts commit 009a82f6437490c262584d65a14094a818bcb747.

The ability to optimise here relies on compiler being able to optimise
away tail calls to avoid stack overflows. Unfortunately, we are seeing
reports of problems, so let's just revert.

Reported-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
5 years agoNFSv4.1 fix incorrect return value in copy_file_range
Olga Kornievskaia [Thu, 11 Apr 2019 18:34:18 +0000 (14:34 -0400)]
NFSv4.1 fix incorrect return value in copy_file_range

According to the NFSv4.2 spec if the input and output file is the
same file, operation should fail with EINVAL. However, linux
copy_file_range() system call has no such restrictions. Therefore,
in such case let's return EOPNOTSUPP and allow VFS to fallback
to doing do_splice_direct(). Also when copy_file_range is called
on an NFSv4.0 or 4.1 mount (ie., a server that doesn't support
COPY functionality), we also need to return EOPNOTSUPP and
fallback to a regular copy.

Fixes xfstest generic/075, generic/091, generic/112, generic/263
for all NFSv4.x versions.

Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
5 years agoxprtrdma: Fix helper that drains the transport
Chuck Lever [Tue, 9 Apr 2019 21:04:09 +0000 (17:04 -0400)]
xprtrdma: Fix helper that drains the transport

We want to drain only the RQ first. Otherwise the transport can
deadlock on ->close if there are outstanding Send completions.

Fixes: 6d2d0ee27c7a ("xprtrdma: Replace rpcrdma_receive_wq ... ")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Cc: stable@vger.kernel.org # v5.0+
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
5 years agoNFS: Fix handling of reply page vector
Chuck Lever [Tue, 9 Apr 2019 14:44:16 +0000 (10:44 -0400)]
NFS: Fix handling of reply page vector

NFSv4 GETACL and FS_LOCATIONS requests stopped working in v5.1-rc.

These two need the extra padding to be added directly to the reply
length.

Reported-by: Olga Kornievskaia <aglo@umich.edu>
Fixes: 02ef04e432ba ("NFS: Account for XDR pad of buf->pages")
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Olga Kornievskaia <aglo@umich.edu>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>