Eric Anholt [Wed, 20 Feb 2019 23:36:58 +0000 (15:36 -0800)]
drm/v3d: Make sure the GPU is on when measuring clocks.
You'll get garbage measurements if the registers always read back
0xdeadbeef
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190220233658.986-3-eric@anholt.net
Reviewed-by: Dave Emett <david.emett@broadcom.com>
Eric Anholt [Wed, 20 Feb 2019 23:36:57 +0000 (15:36 -0800)]
drm/v3d: Don't try to set OVRTMUOUT on V3D 4.x.
The old field is gone and the register now has a different field,
QRMAXCNT for how many TMU requests get serviced before thread switch.
We were accidentally reducing it from its default of 0x3 (4 requests)
to 0x0 (1).
v2: Skip setting the reg at all on 4.x, instead of trying to update
only the old field.
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190220233658.986-2-eric@anholt.net
Reviewed-by: Dave Emett <david.emett@broadcom.com>
Sean Paul [Fri, 8 Mar 2019 14:29:40 +0000 (09:29 -0500)]
Merge tag 'topic/hdr-formats-2019-03-07' of git://anongit.freedesktop.org/drm/drm-misc into drm-misc-next
Add support for Y21x and Y41x to drm core and i915, and P01x support to i915.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/f2485309-d645-bed4-95f4-e66ff312aa05@linux.intel.com
Qiang Yu [Mon, 25 Feb 2019 14:07:16 +0000 (22:07 +0800)]
drm: export drm_timeout_abs_to_jiffies
For other driver like lima usage.
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190225140717.20586-2-yuq825@gmail.com
Maxime Ripard [Tue, 26 Feb 2019 14:25:49 +0000 (15:25 +0100)]
drm/sun4i: rgb: Change the pixel clock validation check
The current code, since commit
bb43d40d7c83 ("drm/sun4i: rgb: Validate the
clock rate"), perform some validation on the pixel clock to filter out the
EDID modes provided by monitors (through bridges) that we wouldn't be able
to reach. For the usual modes, we're able to generate a perfect clock rate,
so a strict check was enough.
However, this had the side effect of preventing displays that would work
otherwise to operate properly, since we would pretty much never be able to
generate an exact rate for those displays, even though we would fall within
that panel tolerance.
This was also shown to happen for unusual modes exposed through EDIDs, for
example on eDP panels.
We can work around this by simplifying a bit the problem: no panels we've
encountered so far actually needed that check. All of them are tied to a
particular board when it is produced, and made to work with the Allwinner
BSP. That pretty much guarantees that we never have a pixel clock out of
reach.
On the other hand, the EDIDs modes that needed to be validated have always
been exposed through bridges.
Let's just use that metric to instead of validating all modes, only
validate modes when we have a bridge attached. It should be good enough for
now, while we still have room for improvements or refinements using the
display_timings structure for example for panels.
We also add a tolerance for EDID-based modes instead of doing a strict
check. This tolerance is of 0.5% which is the one advertised in the VESA
DVT and CVT specs. If that needed to be extended in the future, we can add
a custom module parameter to relax it a bit.
Fixes:
bb43d40d7c83 ("drm/sun4i: rgb: Validate the clock rate")
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Vasily Khoruzhick <anarsoul@gmail.com> # tested on pinebook
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ec2dc2a7b3d4bd44f7a2a6e1c1813f92449a7310.1551191081.git-series.maxime.ripard@bootlin.com
Maxime Ripard [Tue, 26 Feb 2019 14:25:48 +0000 (15:25 +0100)]
drm/sun4i: Move rate variables to long long
Our clock rate variables are getting pretty close to the LONG_MAX / ULONG_MAX
limit, especially since we will start doing arithmetic on it. Move those
types to unsigned long long to be sure we don't overflow their type.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Vasily Khoruzhick <anarsoul@gmail.com> # tested on pinebook
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/022c3b850413edd6afbca20062f100971de2f5af.1551191081.git-series.maxime.ripard@bootlin.com
Maxime Ripard [Tue, 26 Feb 2019 14:25:47 +0000 (15:25 +0100)]
drm/sun4i: rgb: Store the bridge pointer
We'll need the bridge pointer, if any, in the mode_valid callback in
addition to the init function. Store the pointer to the bridge in the
rgb private structure.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Vasily Khoruzhick <anarsoul@gmail.com> # tested on pinebook
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/2f16d70fb09613b3a030fd6a016343047d519d43.1551191081.git-series.maxime.ripard@bootlin.com
Maxime Ripard [Tue, 26 Feb 2019 14:25:46 +0000 (15:25 +0100)]
drm/sun4i: Move the panel pointer from the TCON to the encoders
The TCON driver used to need the panel pointer in order to configure the
tcon according to the various parameters of the panel. However, this has
evolved over time (especially to support bridges), and therefore the panel
pointer isn't needed anymore by the TCON driver.
Move that pointer to the LVDS and RGB encoders drivers.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Tested-by: Vasily Khoruzhick <anarsoul@gmail.com> # tested on pinebook
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/13288b6b8f27b614a6c9aef348923c34b2803ad4.1551191081.git-series.maxime.ripard@bootlin.com
Maxime Ripard [Wed, 6 Mar 2019 14:02:45 +0000 (15:02 +0100)]
drm/vc4: Use 16bpp by default for the fbdev buffer
The preferred bpp for the fbdev emulation buffer has been 32 so far, which
means that by default we will allocate an 8MB buffer with a 1920x1080
resolution.
Worse this memory will be allocated from the CMA pool, and will never be
freed even if we don't use the fbdev emulation. Therefore, reducing it is a
big deal, and switching to 16bpp by default will gain us around 4MB at
1920x1080, while keeping decent color depth. And users still have the
option to switch to 32bpp using the kernel command line.
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190306140245.21973-1-maxime.ripard@bootlin.com
Sean Paul [Wed, 6 Mar 2019 14:22:18 +0000 (09:22 -0500)]
Merge drm/drm-next into drm-misc-next
Picking up v5.0 + missed misc-fixes from last release
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Paul Kocialkowski [Wed, 20 Feb 2019 15:51:24 +0000 (16:51 +0100)]
drm/vc4: Add a debugfs entry to disable/enable the load tracker
In order to test whether the load tracker is working as expected, we
need the ability to compare the commit result with the underrun
indication. With the load tracker always enabled, commits that are
expected to trigger an underrun are always rejected, so userspace
cannot get the actual underrun indication from the hardware.
Add a debugfs entry to disable/enable the load tracker, so that a DRM
commit expected to trigger an underrun can go through with the load
tracker disabled. The underrun indication is then available to
userspace and can be checked against the commit result with the load
tracker enabled.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190220155124.25022-4-paul.kocialkowski@bootlin.com
Boris Brezillon [Wed, 20 Feb 2019 15:51:23 +0000 (16:51 +0100)]
drm/vc4: Add a load tracker to prevent HVS underflow errors
The HVS block is supposed to fill the pixelvalve FIFOs fast enough to
meet the requested framerate. The problem is, the HVS and memory bus
bandwidths are limited, and if we don't take these limitations into
account we might end up with HVS underflow errors.
This patch is trying to model the per-plane HVS and memory bus bandwidth
consumption and take a decision at atomic_check() time whether the
estimated load will fit in the HVS and membus budget.
Note that we take an extra margin on the memory bus consumption to let
the system run smoothly when other blocks are doing heavy use of the
memory bus. Same goes for the HVS limit, except the margin is smaller in
this case, since the HVS is not used by external components.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190220155124.25022-3-paul.kocialkowski@bootlin.com
Boris Brezillon [Wed, 20 Feb 2019 15:51:22 +0000 (16:51 +0100)]
drm/vc4: Report HVS underrun errors
Add a debugfs entry and helper for reporting HVS underrun errors as
well as helpers for masking and unmasking the underrun interrupts.
Add an IRQ handler and initial IRQ configuration.
Rework related register definitions to take the channel number.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190220155124.25022-2-paul.kocialkowski@bootlin.com
David Francis [Thu, 21 Feb 2019 20:20:01 +0000 (15:20 -0500)]
drm/dsc: Split DSC PPS and SDP header initialisations
The DP 1.4 spec defines the SDP header and SDP contents for
a Picture Parameter Set (PPS) that must be sent in advance
of DSC transmission to define the encoding characteristics.
This was done in one struct, drm_dsc_pps_infoframe, which
conatined the SDP header and PPS. Because the PPS is
a property of DSC over any connector, not just DP, and because
drm drivers may have their own SDP structs they wish to use,
make the functions that initialise SDP and PPS headers take
the components they operate on, not drm_dsc_pps_infoframe,
Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190221202001.28430-4-David.Francis@amd.com
David Francis [Thu, 21 Feb 2019 20:20:00 +0000 (15:20 -0500)]
drm/dsc: Add native 420 and 422 support to compute_rc_params
Native 420 and 422 transfer modes are new in DSC1.2
In these modes, each two pixels of a slice are treated as one
pixel, so the slice width is half as large (round down) for
the purposes of calucating the groups per line and chunk size
in bytes
In native 422 mode, each pixel has four components, so the
mux component of a group is larger by one additional mux word
and one additional component
Now that there is native 422 support, the configuration option
previously called enable422 is renamed to simple_422 to avoid
confusion
Acked-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: David Francis <David.Francis@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190221202001.28430-3-David.Francis@amd.com
David Francis [Thu, 21 Feb 2019 20:19:59 +0000 (15:19 -0500)]
drm/i915: Move dsc rate params compute into drm
The function intel_compute_rc_parameters is part of the dsc spec
and is not driver-specific. Other drm drivers might like to use
it. The function is not changed; just moved and renamed.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: David Francis <David.Francis@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190221202001.28430-2-David.Francis@amd.com
Swati Sharma [Mon, 4 Mar 2019 11:56:35 +0000 (17:26 +0530)]
drm/i915/icl: Enabling Y2xx and Y4xx (xx:10/12/16) formats for universal planes
Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Signed-off-by: Vidya Srinivas <vidya.srinivas@intel.com>
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1551700595-21481-7-git-send-email-swati2.sharma@intel.com
Swati Sharma [Mon, 4 Mar 2019 11:56:34 +0000 (17:26 +0530)]
drm/i915/icl: Add Y2xx and Y4xx (xx:10/12/16) plane control definitions
Added needed plane control flag definitions for Y2xx and Y4xx (10, 12 and
16 bits)
Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Signed-off-by: Vidya Srinivas <vidya.srinivas@intel.com>
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1551700595-21481-6-git-send-email-swati2.sharma@intel.com
Acked-by: Jani Nikula <jani.nikula@intel.com>
Swati Sharma [Mon, 4 Mar 2019 11:56:33 +0000 (17:26 +0530)]
drm: Add Y2xx and Y4xx (xx:10/12/16) format definitions and fourcc
The following pixel formats are packed format that follows 4:2:2
chroma sampling. For memory represenation each component is
allocated 16 bits each. Thus each pixel occupies 32bit.
Y210: For each component, valid data occupies MSB 10 bits.
LSB 6 bits are filled with zeroes.
Y212: For each component, valid data occupies MSB 12 bits.
LSB 4 bits are filled with zeroes.
Y216: For each component valid data occupies 16 bits,
doesn't require any padding bits.
First 16 bits stores the Y value and the next 16 bits stores one
of the chroma samples alternatively. The first luma sample will
be accompanied by first U sample and second luma sample is
accompanied by the first V sample.
The following pixel formats are packed format that follows 4:4:4
chroma sampling. Channels are arranged in the order UYVA in
increasing memory order.
Y410: Each color component occupies 10 bits and X component
takes 2 bits, thus each pixel occupies 32 bits.
Y412: Each color component is 16 bits where valid data
occupies MSB 12 bits. LSB 4 bits are filled with zeroes.
Thus, each pixel occupies 64 bits.
Y416: Each color component occupies 16 bits for valid data,
doesn't require any padding bits. Thus, each pixel
occupies 64 bits.
v3: fixed missing tab for XYUV8888 (JP)
Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Signed-off-by: Vidya Srinivas <vidya.srinivas@intel.com>
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1551700595-21481-5-git-send-email-swati2.sharma@intel.com
Juha-Pekka Heikkila [Mon, 4 Mar 2019 11:56:32 +0000 (17:26 +0530)]
drm/i915: Enable P010, P012, P016 formats for primary and sprite planes
Enabling of P010, P012 and P016 formats. These formats will
extend NV12 for larger bit depths.
Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1551700595-21481-4-git-send-email-swati2.sharma@intel.com
Juha-Pekka Heikkila [Mon, 4 Mar 2019 11:56:31 +0000 (17:26 +0530)]
drm/i915: Preparations for enabling P010, P012, P016 formats
Preparations for enabling P010, P012 and P016 formats. These
formats will extend NV12 for larger bit depths.
Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1551700595-21481-3-git-send-email-swati2.sharma@intel.com
Juha-Pekka Heikkila [Mon, 4 Mar 2019 11:56:30 +0000 (17:26 +0530)]
drm/i915: Add P010, P012, P016 plane control definitions
Add needed plane control flag definitions for P010, P012 and
P016 formats.
Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Signed-off-by: Swati Sharma <swati2.sharma@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1551700595-21481-2-git-send-email-swati2.sharma@intel.com
Dave Airlie [Mon, 4 Mar 2019 22:14:17 +0000 (08:14 +1000)]
Merge tag 'drm-misc-fixes-2019-02-22' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-fixes for v5.0:
- Block fb changes for async atomic updates to prevent a use after free.
- Fix ID mismatch error on load in bochs.
- Fix memory leak when drm_setup fails.
- Fixes around handling of DRM_AUTH.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/42113611-e2cd-6bdd-7de5-4f8ab5a0cbe6@linux.intel.com
Mario Kleiner [Sat, 9 Feb 2019 06:52:55 +0000 (07:52 +0100)]
drm/amd/display: Use vrr friendly pageflip throttling in DC.
In VRR mode, keep track of the vblank count of the last
completed pageflip in amdgpu_crtc->last_flip_vblank, as
recorded in the pageflip completion handler after each
completed flip.
Use that count to prevent mmio programming a new pageflip
within the same vblank in which the last pageflip completed,
iow. to throttle pageflips to at most one flip per video
frame, while at the same time allowing to request a flip
not only before start of vblank, but also anywhere within
vblank.
The old logic did the same, and made sense for regular fixed
refresh rate flipping, but in vrr mode it prevents requesting
a flip anywhere inside the possibly huge vblank, thereby
reducing framerate in vrr mode instead of improving it, by
delaying a slightly delayed flip requests up to a maximum
vblank duration + 1 scanout duration. This would limit VRR
usefulness to only help applications with a very high GPU
demand, which can submit the flip request before start of
vblank, but then have to wait long for fences to complete.
With this method a flip can be both requested and - after
fences have completed - executed, ie. it doesn't matter if
the request (amdgpu_dm_do_flip()) gets delayed until deep
into the extended vblank due to cpu execution delays. This
also allows clients which want to regulate framerate within
the vrr range a much more fine-grained control of flip timing,
a feature that might be useful for video playback, and is
very useful for neuroscience/vision research applications.
In regular non-VRR mode, retain the old flip submission
behavior. This to keep flip scheduling for fullscreen X11/GLX
OpenGL clients intact, if they use the GLX_OML_sync_control
extensions glXSwapBufferMscOML(, ..., target_msc,...) function
with a specific target_msc target vblank count.
glXSwapBuffersMscOML() or DRI3/Present PresentPixmap() will
not flip at the proper target_msc for a non-zero target_msc
if VRR mode is active with this patch. They'd often flip one
frame too early. However, this limitation should not matter
much in VRR mode, as scheduling based on vblank counts is
pretty futile/unusable under variable refresh duration
anyway, so no real extra harm is done.
According to some testing already done with this patch by
Nicholas on top of my tests, IGT tests didn't report any
problems. If fixes stuttering and flickering when flipping
at rates below the minimum vrr refresh rate.
Fixes:
bb47de736661 ("drm/amdgpu: Set FreeSync state using drm VRR
properties")
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: <stable@vger.kernel.org>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Michel Dänzer <michel@daenzer.net>
Tested-by: Bruno Filipe <bmilreu@gmail.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Colin Ian King [Sun, 17 Feb 2019 22:55:54 +0000 (22:55 +0000)]
drm: fix spelling mistake "intead" -> "instead"
There is a spelling mistake in a DRM_NOTE message. Fix this.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190217225554.17742-1-colin.king@canonical.com
Noralf Trønnes [Mon, 25 Feb 2019 14:42:32 +0000 (15:42 +0100)]
drm/tinydrm: Use drm_dev_enter/exit()
This protects device resources from use after device removal.
There are 3 ways for driver-device unbinding to happen:
- The driver module is unloaded causing the driver to be unregistered.
This can't happen as long as there are open file handles because a
reference is taken on the module.
- The device is removed (Device Tree overlay unloading).
This can happen at any time.
- The driver sysfs unbind file can be used to unbind the driver from the
device. This can happen any time.
v2: Since drm_atomic_helper_shutdown() has to be called after
drm_dev_unplug() we don't want do block ->disable after unplug.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190225144232.20761-8-noralf@tronnes.org
Noralf Trønnes [Mon, 25 Feb 2019 14:42:31 +0000 (15:42 +0100)]
drm/tinydrm: Remove tinydrm_device
No more users left so it can go alongside its helpers.
Update the tinydrm docs description and remove todo entry.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20190225144232.20761-7-noralf@tronnes.org
Noralf Trønnes [Mon, 25 Feb 2019 14:42:30 +0000 (15:42 +0100)]
drm/tinydrm: Drop using tinydrm_device
Use devm_drm_dev_init() and drop using tinydrm_device.
v2: devm_drm_dev_register() was dropped so add driver release callbacks.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190225144232.20761-6-noralf@tronnes.org
Noralf Trønnes [Mon, 25 Feb 2019 14:42:29 +0000 (15:42 +0100)]
drm/tinydrm/repaper: Drop using tinydrm_device
Use devm_drm_dev_init() and drop using tinydrm_device.
v2: devm_drm_dev_register() was dropped so add a driver release callback.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190225144232.20761-5-noralf@tronnes.org
Noralf Trønnes [Mon, 25 Feb 2019 14:42:28 +0000 (15:42 +0100)]
drm/drv: DOC: Add driver example code
Add driver example that shows how devm_drm_dev_init() can be used.
v2: Expand docs (Sam, Daniel)
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190225144232.20761-4-noralf@tronnes.org
Noralf Trønnes [Mon, 25 Feb 2019 14:42:27 +0000 (15:42 +0100)]
drm: Add devm_drm_dev_init()
This adds a resource managed (devres) version of drm_dev_init().
v2: Remove devm_drm_dev_register() since we can't touch hw in devm
release functions and drivers want to disable hw on driver module
unload (Daniel Vetter, Greg KH)
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Greg KH <gregkh@linuxfoundation.org>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190225144232.20761-3-noralf@tronnes.org
Noralf Trønnes [Mon, 25 Feb 2019 14:42:26 +0000 (15:42 +0100)]
drm/drv: Hold ref on parent device during drm_device lifetime
This makes it safe to access drm_device->dev after the parent device has
been removed/unplugged.
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190225144232.20761-2-noralf@tronnes.org
Dave Airlie [Mon, 4 Mar 2019 02:02:55 +0000 (12:02 +1000)]
Merge v5.0 into drm-next
There is a really hairy resolution involving amdgpu fixes, that I'd rather confirm here.
Also some misc fixes are landed by me, but the pr has them as well.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Linus Torvalds [Sun, 3 Mar 2019 23:21:29 +0000 (15:21 -0800)]
Linux 5.0
Linus Torvalds [Sun, 3 Mar 2019 00:43:15 +0000 (16:43 -0800)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"One more set of simple ARM platform fixes:
- A boot regression on qualcomm msm8998
- Gemini display controllers got turned off by accident
- incorrect reference counting in optee"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
tee: optee: add missing of_node_put after of_device_is_available
arm64: dts: qcom: msm8998: Extend TZ reserved memory area
ARM: dts: gemini: Re-enable display controller
Linus Torvalds [Sat, 2 Mar 2019 19:47:29 +0000 (11:47 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Thomas Gleixner:
"Two last minute fixes:
- Prevent value evaluation via functions happening in the user access
enabled region of __put_user() (put another way: make sure to
evaluate the value to be stored in user space _before_ enabling
user space accesses)
- Correct the definition of a Hyper-V hypercall constant"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/hyper-v: Fix definition of HV_MAX_FLUSH_REP_COUNT
x86/uaccess: Don't leak the AC flag into __put_user() value evaluation
Linus Torvalds [Sat, 2 Mar 2019 19:39:54 +0000 (11:39 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Nine small fixes.
The resume fix is a cosmetic removal of a warning with an incorrect
condition causing it to alarm people wrongly.
The other eight patches correct a thinko in Christoph Hellwig's DMA
conversion series. Without it all these drivers end up with 32 bit DMA
masks meaning they bounce any page over 4GB before sending it to the
controller.
Nowadays, even laptops mostly have memory above 4GB, so this can lead
to significant performance degradation with all the bouncing"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: core: Avoid that system resume triggers a kernel warning
scsi: hptiop: fix calls to dma_set_mask()
scsi: hisi_sas: fix calls to dma_set_mask_and_coherent()
scsi: csiostor: fix calls to dma_set_mask_and_coherent()
scsi: bfa: fix calls to dma_set_mask_and_coherent()
scsi: aic94xx: fix calls to dma_set_mask_and_coherent()
scsi: 3w-sas: fix calls to dma_set_mask_and_coherent()
scsi: 3w-9xxx: fix calls to dma_set_mask_and_coherent()
scsi: lpfc: fix calls to dma_set_mask_and_coherent()
Linus Torvalds [Sat, 2 Mar 2019 16:46:34 +0000 (08:46 -0800)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Fix refcount leak in act_ipt during replace, from Davide Caratti.
2) Set task state properly in tun during blocking reads, from Timur
Celik.
3) Leaked reference in DSA, from Wen Yang.
4) NULL deref in act_tunnel_key, from Vlad Buslov.
5) cipso_v4_erro can reference the skb IPCB in inappropriate contexts
thus referencing garbage, from Nazarov Sergey.
6) Don't accept RTA_VIA and RTA_GATEWAY in contexts where those
attributes make no sense.
7) Fix hung sendto in tipc, from Tung Nguyen.
8) Out-of-bounds access in netlabel, from Paul Moore.
9) Grant reference leak in xen-netback, from Igor Druzhinin.
10) Fix tx stalls with lan743x, from Bryan Whitehead.
11) Fix interrupt storm with mv88e6xxx, from Hein Kallweit.
12) Memory leak in sit on device registry failure, from Mao Wenan.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
net: sit: fix memory leak in sit_init_net()
net: dsa: mv88e6xxx: Fix statistics on mv88e6161
geneve: correctly handle ipv6.disable module parameter
net: dsa: mv88e6xxx: prevent interrupt storm caused by mv88e6390x_port_set_cmode
bpf: fix sanitation rewrite in case of non-pointers
ipv4: Add ICMPv6 support when parse route ipproto
MIPS: eBPF: Fix icache flush end address
lan743x: Fix TX Stall Issue
net: phy: phylink: fix uninitialized variable in phylink_get_mac_state
net: aquantia: regression on cpus with high cores: set mode with 8 queues
selftests: fixes for UDP GRO
bpf: drop refcount if bpf_map_new_fd() fails in map_create()
net: dsa: mv88e6xxx: power serdes on/off for 10G interfaces on 6390X
net: dsa: mv88e6xxx: Fix u64 statistics
xen-netback: don't populate the hash cache on XenBus disconnect
xen-netback: fix occasional leak of grant ref mappings under memory pressure
sctp: chunk.c: correct format string for size_t in printk
net: netem: fix skb length BUG_ON in __skb_to_sgvec
netlabel: fix out-of-bounds memory accesses
ipv4: Pass original device to ip_rcv_finish_core
...
Linus Torvalds [Sat, 2 Mar 2019 16:32:02 +0000 (08:32 -0800)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6
Pull more crypto fixes from Herbert Xu:
"This fixes a couple of issues in arm64/chacha that was introduced in
5.0"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: arm64/chacha - fix hchacha_block_neon() for big endian
crypto: arm64/chacha - fix chacha_4block_xor_neon() for big endian
Mao Wenan [Fri, 1 Mar 2019 15:06:40 +0000 (23:06 +0800)]
net: sit: fix memory leak in sit_init_net()
If register_netdev() is failed to register sitn->fb_tunnel_dev,
it will go to err_reg_dev and forget to free netdev(sitn->fb_tunnel_dev).
BUG: memory leak
unreferenced object 0xffff888378daad00 (size 512):
comm "syz-executor.1", pid 4006, jiffies
4295121142 (age 16.115s)
hex dump (first 32 bytes):
00 e6 ed c0 83 88 ff ff 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<
00000000d6dcb63e>] kvmalloc include/linux/mm.h:577 [inline]
[<
00000000d6dcb63e>] kvzalloc include/linux/mm.h:585 [inline]
[<
00000000d6dcb63e>] netif_alloc_netdev_queues net/core/dev.c:8380 [inline]
[<
00000000d6dcb63e>] alloc_netdev_mqs+0x600/0xcc0 net/core/dev.c:8970
[<
00000000867e172f>] sit_init_net+0x295/0xa40 net/ipv6/sit.c:1848
[<
00000000871019fa>] ops_init+0xad/0x3e0 net/core/net_namespace.c:129
[<
00000000319507f6>] setup_net+0x2ba/0x690 net/core/net_namespace.c:314
[<
0000000087db4f96>] copy_net_ns+0x1dc/0x330 net/core/net_namespace.c:437
[<
0000000057efc651>] create_new_namespaces+0x382/0x730 kernel/nsproxy.c:107
[<
00000000676f83de>] copy_namespaces+0x2ed/0x3d0 kernel/nsproxy.c:165
[<
0000000030b74bac>] copy_process.part.27+0x231e/0x6db0 kernel/fork.c:1919
[<
00000000fff78746>] copy_process kernel/fork.c:1713 [inline]
[<
00000000fff78746>] _do_fork+0x1bc/0xe90 kernel/fork.c:2224
[<
000000001c2e0d1c>] do_syscall_64+0xc8/0x580 arch/x86/entry/common.c:290
[<
00000000ec48bd44>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<
0000000039acff8a>] 0xffffffffffffffff
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Fri, 1 Mar 2019 22:43:39 +0000 (23:43 +0100)]
net: dsa: mv88e6xxx: Fix statistics on mv88e6161
Despite what the datesheet says, the silicon implements the older way
of snapshoting the statistics. Change the op.
Reported-by: Chris.Healy@zii.aero
Tested-by: Chris.Healy@zii.aero
Fixes:
0ac64c394900 ("net: dsa: mv88e6xxx: mv88e6161 uses mv88e6320 stats snapshot")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Benc [Thu, 28 Feb 2019 13:56:04 +0000 (14:56 +0100)]
geneve: correctly handle ipv6.disable module parameter
When IPv6 is compiled but disabled at runtime, geneve_sock_add returns
-EAFNOSUPPORT. For metadata based tunnels, this causes failure of the whole
operation of bringing up the tunnel.
Ignore failure of IPv6 socket creation for metadata based tunnels caused by
IPv6 not being available.
This is the same fix as what commit
d074bf960044 ("vxlan: correctly handle
ipv6.disable module parameter") is doing for vxlan.
Note there's also commit
c0a47e44c098 ("geneve: should not call rt6_lookup()
when ipv6 was disabled") which fixes a similar issue but for regular
tunnels, while this patch is needed for metadata based tunnels.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sat, 2 Mar 2019 05:48:08 +0000 (21:48 -0800)]
Merge git://git./pub/scm/linux/kernel/git/bpf/bpf
Alexei Starovoitov says:
====================
pull-request: bpf 2019-03-01
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) fix sanitation rewrite, from Daniel.
2) fix error path on map_new_fd, from Peng.
3) fix icache flush address, from Paul.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Heiner Kallweit [Thu, 28 Feb 2019 06:39:15 +0000 (07:39 +0100)]
net: dsa: mv88e6xxx: prevent interrupt storm caused by mv88e6390x_port_set_cmode
When debugging another issue I faced an interrupt storm in this
driver (
88E6390, port 9 in SGMII mode), consisting of alternating
link-up / link-down interrupts. Analysis showed that the driver
wanted to set a cmode that was set already. But so far
mv88e6390x_port_set_cmode() doesn't check this and powers down
SERDES, what causes the link to break, and eventually results in
the described interrupt storm.
Fix this by checking whether the cmode actually changes. We want
that the very first call to mv88e6390x_port_set_cmode() always
configures the registers, therefore initialize port.cmode with
a value that is different from any supported cmode value.
We have to take care that we only init the ports cmode once
chip->info->num_ports is set.
v2:
- add small helper and init the number of actual ports only
Fixes:
364e9d7776a3 ("net: dsa: mv88e6xxx: Power on/off SERDES on cmode change")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Fri, 1 Mar 2019 21:05:29 +0000 (22:05 +0100)]
bpf: fix sanitation rewrite in case of non-pointers
Marek reported that he saw an issue with the below snippet in that
timing measurements where off when loaded as unpriv while results
were reasonable when loaded as privileged:
[...]
uint64_t a = bpf_ktime_get_ns();
uint64_t b = bpf_ktime_get_ns();
uint64_t delta = b - a;
if ((int64_t)delta > 0) {
[...]
Turns out there is a bug where a corner case is missing in the fix
d3bd7413e0ca ("bpf: fix sanitation of alu op with pointer / scalar
type from different paths"), namely fixup_bpf_calls() only checks
whether aux has a non-zero alu_state, but it also needs to test for
the case of BPF_ALU_NON_POINTER since in both occasions we need to
skip the masking rewrite (as there is nothing to mask).
Fixes:
d3bd7413e0ca ("bpf: fix sanitation of alu op with pointer / scalar type from different paths")
Reported-by: Marek Majkowski <marek@cloudflare.com>
Reported-by: Arthur Fabre <afabre@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/netdev/CAJPywTJqP34cK20iLM5YmUMz9KXQOdu1-+BZrGMAGgLuBWz7fg@mail.gmail.com/T/
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Hangbin Liu [Wed, 27 Feb 2019 08:15:29 +0000 (16:15 +0800)]
ipv4: Add ICMPv6 support when parse route ipproto
For ip rules, we need to use 'ipproto ipv6-icmp' to match ICMPv6 headers.
But for ip -6 route, currently we only support tcp, udp and icmp.
Add ICMPv6 support so we can match ipv6-icmp rules for route lookup.
v2: As David Ahern and Sabrina Dubroca suggested, Add an argument to
rtm_getroute_parse_ip_proto() to handle ICMP/ICMPv6 with different family.
Reported-by: Jianlin Shi <jishi@redhat.com>
Fixes:
eacb9384a3fe ("ipv6: support sport, dport and ip_proto in RTM_GETROUTE")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paul Burton [Fri, 1 Mar 2019 22:58:09 +0000 (22:58 +0000)]
MIPS: eBPF: Fix icache flush end address
The MIPS eBPF JIT calls flush_icache_range() in order to ensure the
icache observes the code that we just wrote. Unfortunately it gets the
end address calculation wrong due to some bad pointer arithmetic.
The struct jit_ctx target field is of type pointer to u32, and as such
adding one to it will increment the address being pointed to by 4 bytes.
Therefore in order to find the address of the end of the code we simply
need to add the number of 4 byte instructions emitted, but we mistakenly
add the number of instructions multiplied by 4. This results in the call
to flush_icache_range() operating on a memory region 4x larger than
intended, which is always wasteful and can cause crashes if we overrun
into an unmapped page.
Fix this by correcting the pointer arithmetic to remove the bogus
multiplication, and use braces to remove the need for a set of brackets
whilst also making it obvious that the target field is a pointer.
Signed-off-by: Paul Burton <paul.burton@mips.com>
Fixes:
b6bd53f9c4e8 ("MIPS: Add missing file for eBPF JIT.")
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Song Liu <songliubraving@fb.com>
Cc: Yonghong Song <yhs@fb.com>
Cc: netdev@vger.kernel.org
Cc: bpf@vger.kernel.org
Cc: linux-mips@vger.kernel.org
Cc: stable@vger.kernel.org # v4.13+
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Bryan Whitehead [Tue, 26 Feb 2019 19:06:26 +0000 (14:06 -0500)]
lan743x: Fix TX Stall Issue
It has been observed that tx queue stalls while downloading
from certain web sites (example www.speedtest.net)
The cause has been tracked down to a corner case where
dma descriptors where not setup properly. And there for a tx
completion interrupt was not signaled.
This fix corrects the problem by properly marking the end of
a multi descriptor transmission.
Fixes:
23f0703c125b ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Heiner Kallweit [Tue, 26 Feb 2019 18:29:22 +0000 (19:29 +0100)]
net: phy: phylink: fix uninitialized variable in phylink_get_mac_state
When debugging an issue I found implausible values in state->pause.
Reason in that state->pause isn't initialized and later only single
bits are changed. Also the struct itself isn't initialized in
phylink_resolve(). So better initialize state->pause and other
not yet initialized fields.
v2:
- use right function name in subject
v3:
- initialize additional fields
Fixes:
9525ae83959b ("phylink: add phylink infrastructure")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dmitry Bogdanov [Tue, 26 Feb 2019 15:39:13 +0000 (15:39 +0000)]
net: aquantia: regression on cpus with high cores: set mode with 8 queues
Recently the maximum number of queues was increased up to 8, but
NIC was not fully configured for 8 queues. In setups with more than 4 CPU
cores parts of TX traffic gets lost if the kernel routes it to queues 4th-8th.
This patch sets a tx hw traffic mode with 8 queues.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=202651
Fixes:
71a963cfc50b ("net: aquantia: increase max number of hw queues")
Reported-by: Nicholas Johnson <nicholas.johnson@outlook.com.au>
Signed-off-by: Dmitry Bogdanov <dmitry.bogdanov@aquantia.com>
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Tue, 26 Feb 2019 14:27:43 +0000 (15:27 +0100)]
selftests: fixes for UDP GRO
The current implementation for UDP GRO tests is racy: the receiver
may flush the RX queue while the sending is still transmitting and
incorrectly report RX errors, with a wrong number of packet received.
Add explicit timeouts to the receiver for both connection activation
(first packet received for UDP) and reception completion, so that
in the above critical scenario the receiver will wait for the
transfer completion.
Fixes:
3327a9c46352 ("selftests: add functionals test for UDP GRO")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Fri, 1 Mar 2019 17:13:04 +0000 (09:13 -0800)]
Merge tag 'iommu-fix-v5.0-rc8' of git://git./linux/kernel/git/joro/iommu
Pull IOMMU fix from Joerg Roedel:
"One important fix for a memory corruption issue in the Intel VT-d
driver that triggers on hardware with deep PCI hierarchies"
* tag 'iommu-fix-v5.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/dmar: Fix buffer overflow during PCI bus notification
Linus Torvalds [Fri, 1 Mar 2019 17:04:59 +0000 (09:04 -0800)]
Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
"2 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
hugetlbfs: fix races and page leaks during migration
kasan: turn off asan-stack for clang-8 and earlier
Mike Kravetz [Fri, 1 Mar 2019 00:22:02 +0000 (16:22 -0800)]
hugetlbfs: fix races and page leaks during migration
hugetlb pages should only be migrated if they are 'active'. The
routines set/clear_page_huge_active() modify the active state of hugetlb
pages.
When a new hugetlb page is allocated at fault time, set_page_huge_active
is called before the page is locked. Therefore, another thread could
race and migrate the page while it is being added to page table by the
fault code. This race is somewhat hard to trigger, but can be seen by
strategically adding udelay to simulate worst case scheduling behavior.
Depending on 'how' the code races, various BUG()s could be triggered.
To address this issue, simply delay the set_page_huge_active call until
after the page is successfully added to the page table.
Hugetlb pages can also be leaked at migration time if the pages are
associated with a file in an explicitly mounted hugetlbfs filesystem.
For example, consider a two node system with 4GB worth of huge pages
available. A program mmaps a 2G file in a hugetlbfs filesystem. It
then migrates the pages associated with the file from one node to
another. When the program exits, huge page counts are as follows:
node0
1024 free_hugepages
1024 nr_hugepages
node1
0 free_hugepages
1024 nr_hugepages
Filesystem Size Used Avail Use% Mounted on
nodev 4.0G 2.0G 2.0G 50% /var/opt/hugepool
That is as expected. 2G of huge pages are taken from the free_hugepages
counts, and 2G is the size of the file in the explicitly mounted
filesystem. If the file is then removed, the counts become:
node0
1024 free_hugepages
1024 nr_hugepages
node1
1024 free_hugepages
1024 nr_hugepages
Filesystem Size Used Avail Use% Mounted on
nodev 4.0G 2.0G 2.0G 50% /var/opt/hugepool
Note that the filesystem still shows 2G of pages used, while there
actually are no huge pages in use. The only way to 'fix' the filesystem
accounting is to unmount the filesystem
If a hugetlb page is associated with an explicitly mounted filesystem,
this information in contained in the page_private field. At migration
time, this information is not preserved. To fix, simply transfer
page_private from old to new page at migration time if necessary.
There is a related race with removing a huge page from a file and
migration. When a huge page is removed from the pagecache, the
page_mapping() field is cleared, yet page_private remains set until the
page is actually freed by free_huge_page(). A page could be migrated
while in this state. However, since page_mapping() is not set the
hugetlbfs specific routine to transfer page_private is not called and we
leak the page count in the filesystem.
To fix that, check for this condition before migrating a huge page. If
the condition is detected, return EBUSY for the page.
Link: http://lkml.kernel.org/r/74510272-7319-7372-9ea6-ec914734c179@oracle.com
Link: http://lkml.kernel.org/r/20190212221400.3512-1-mike.kravetz@oracle.com
Fixes:
bcc54222309c ("mm: hugetlb: introduce page_huge_active")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: <stable@vger.kernel.org>
[mike.kravetz@oracle.com: v2]
Link: http://lkml.kernel.org/r/7534d322-d782-8ac6-1c8d-a8dc380eb3ab@oracle.com
[mike.kravetz@oracle.com: update comment and changelog]
Link: http://lkml.kernel.org/r/420bcfd6-158b-38e4-98da-26d0cd85bd01@oracle.com
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arnd Bergmann [Fri, 1 Mar 2019 00:21:58 +0000 (16:21 -0800)]
kasan: turn off asan-stack for clang-8 and earlier
Building an arm64 allmodconfig kernel with clang results in over 140
warnings about overly large stack frames, the worst ones being:
drivers/gpu/drm/panel/panel-sitronix-st7789v.c:196:12: error: stack frame size of 20224 bytes in function 'st7789v_prepare'
drivers/video/fbdev/omap2/omapfb/displays/panel-tpo-td028ttec1.c:196:12: error: stack frame size of 13120 bytes in function 'td028ttec1_panel_enable'
drivers/usb/host/max3421-hcd.c:1395:1: error: stack frame size of 10048 bytes in function 'max3421_spi_thread'
drivers/net/wan/slic_ds26522.c:209:12: error: stack frame size of 9664 bytes in function 'slic_ds26522_probe'
drivers/crypto/ccp/ccp-ops.c:2434:5: error: stack frame size of 8832 bytes in function 'ccp_run_cmd'
drivers/media/dvb-frontends/stv0367.c:1005:12: error: stack frame size of 7840 bytes in function 'stv0367ter_algo'
None of these happen with gcc today, and almost all of these are the
result of a single known issue in llvm. Hopefully it will eventually
get fixed with the clang-9 release.
In the meantime, the best idea I have is to turn off asan-stack for
clang-8 and earlier, so we can produce a kernel that is safe to run.
I have posted three patches that address the frame overflow warnings
that are not addressed by turning off asan-stack, so in combination with
this change, we get much closer to a clean allmodconfig build, which in
turn is necessary to do meaningful build regression testing.
It is still possible to turn on the CONFIG_ASAN_STACK option on all
versions of clang, and it's always enabled for gcc, but when
CONFIG_COMPILE_TEST is set, the option remains invisible, so
allmodconfig and randconfig builds (which are normally done with a
forced CONFIG_COMPILE_TEST) will still result in a mostly clean build.
Link: http://lkml.kernel.org/r/20190222222950.3997333-1-arnd@arndb.de
Link: https://bugs.llvm.org/show_bug.cgi?id=38809
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Qian Cai <cai@lca.pw>
Reviewed-by: Mark Brown <broonie@kernel.org>
Acked-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Kostya Serebryany <kcc@google.com>
Cc: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 1 Mar 2019 16:44:11 +0000 (08:44 -0800)]
Merge tag 'drm-fixes-2019-03-01' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Three final fixes, one for a feature that is new in this kernel, one
bochs fix for qemu riscv and one atomic modesetting fix.
I've left a few of the other late fixes until next as I didn't want to
throw in anything that wasn't really necessary"
* tag 'drm-fixes-2019-03-01' of git://anongit.freedesktop.org/drm/drm:
drm/bochs: Fix the ID mismatch error
drm: Block fb changes for async plane updates
drm/amd/display: Use vrr friendly pageflip throttling in DC.
Peng Sun [Wed, 27 Feb 2019 14:36:25 +0000 (22:36 +0800)]
bpf: drop refcount if bpf_map_new_fd() fails in map_create()
In bpf/syscall.c, map_create() first set map->usercnt to 1, a file
descriptor is supposed to return to userspace. When bpf_map_new_fd()
fails, drop the refcount.
Fixes:
bd5f5f4ecb78 ("bpf: Add BPF_MAP_GET_FD_BY_ID")
Signed-off-by: Peng Sun <sironhide0null@gmail.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Jernej Skrabec [Thu, 28 Feb 2019 20:03:29 +0000 (21:03 +0100)]
drm/sun4i: Improve VI scaling for DE2/DE3
VI planes support coarse scaling which helps to overcome VI scaler
limitations. While exact working of coarse scaling isn't known, it seems
that it just skips programmed amount of rows and columns. This is
especially useful for downscaling very big planes (4K down to 1080p).
Horizontal coarse scaling is currently used to fit one line to VI scaler
buffer.
Vertical coarse scaling is used to assure that VI scaler is actually
capable of processing framebuffer in one frame time.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190228200329.11128-4-jernej.skrabec@siol.net
Jernej Skrabec [Thu, 28 Feb 2019 20:03:28 +0000 (21:03 +0100)]
drm/sun4i: Add VI scaler line size quirk for DE2/DE3
While all RGB scalers have maximum line size of 2048, some YUV scalers
have maximum line size of 2048 and some have line size of 4096.
Since there is no rule for that, add a quirk.
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190228200329.11128-3-jernej.skrabec@siol.net
Arnd Bergmann [Fri, 1 Mar 2019 14:08:16 +0000 (15:08 +0100)]
Merge tag 'qcom-fixes-for-5.0-rc8' of git://git./linux/kernel/git/agross/linux into arm/fixes
Qualcomm ARM64 Fixes for 5.0-rc8
* Fix TZ memory area size to avoid crashes during boot
* tag 'qcom-fixes-for-5.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/agross/linux:
arm64: dts: qcom: msm8998: Extend TZ reserved memory area
Arnd Bergmann [Fri, 1 Mar 2019 13:59:40 +0000 (14:59 +0100)]
Merge tag 'tee-fix-for-v5.0' of https://git.linaro.org/people/jens.wiklander/linux-tee into arm/fixes
OP-TEE driver
- add missing of_node_put after of_device_is_available
* tag 'tee-fix-for-v5.0' of https://git.linaro.org/people/jens.wiklander/linux-tee:
tee: optee: add missing of_node_put after of_device_is_available
David Santamaría Rogado [Sat, 23 Feb 2019 21:19:28 +0000 (22:19 +0100)]
drm: panel-orientation-quirks: Add quirk for Lenovo Ideapad D330
Lenovo Ideapad D330 Pentium CPU version has 1920x1200 LCD.
Console output gets rotated at boot as Miix 310.
Signed-off-by: David Santamaría Rogado <howl.nsp@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190223211928.9899-1-howl.nsp@gmail.com
Linus Torvalds [Thu, 28 Feb 2019 23:33:10 +0000 (15:33 -0800)]
Merge tag 'mips_fixes_5.0_4' of git://git./linux/kernel/git/mips/linux
Pull MIPS fixes from Paul Burton:
"A few more MIPS fixes:
- Fix 16b cmpxchg() operations which could erroneously fail if bits
15:8 of the old value are non-zero. In practice I'm not aware of
any actual users of 16b cmpxchg() on MIPS, but this fixes the
support for it was was introduced in v4.13.
- Provide a struct device to dma_alloc_coherent for Lantiq XWAY
systems with a "Voice MIPS Macro Core" (VMMC) device.
- Provide DMA masks for BCM63xx ethernet devices, fixing a regression
introduced in v4.19.
- Fix memblock reservation for the kernel when the system has a
non-zero PHYS_OFFSET, correcting the memblock conversion performed
in v4.20"
* tag 'mips_fixes_5.0_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: fix memory setup for platforms with PHYS_OFFSET != 0
MIPS: BCM63XX: provide DMA masks for ethernet devices
MIPS: lantiq: pass struct device to DMA API functions
MIPS: fix truncation in __cmpxchg_small for short values
Linus Torvalds [Thu, 28 Feb 2019 23:22:59 +0000 (15:22 -0800)]
Merge tag 'for-linus-5.0-ofs1' of git://git./linux/kernel/git/hubcap/linux
Pull orangefs fixlet from Mike Marshall:
"Remove two un-needed BUG_ONs"
* tag 'for-linus-5.0-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
orangefs: remove two un-needed BUG_ONs...
Maxime Chevallier [Thu, 28 Feb 2019 21:14:33 +0000 (22:14 +0100)]
net: dsa: mv88e6xxx: power serdes on/off for 10G interfaces on 6390X
Upon setting the cmode on 6390 and 6390X, the associated serdes
interfaces must be powered off/on.
Both 6390X and 6390 share code to do so, but it currently uses the 6390
specific helper mv88e6390_serdes_power() to disable and enable the
serdes interface.
This call will fail silently on 6390X when trying so set a 10G interface
such as XAUI or RXAUI, since mv88e6390_serdes_power() internally grabs
the lane number based on modes supported by the 6390, and returns 0 when
getting -ENODEV as a lane number.
Using mv88e6390x_serdes_power() should be safe here, since we explicitly
rule-out all ports but the 9 and 10, and because modes supported by 6390
ports 9 and 10 are a subset of those supported on 6390X.
This was tested on 6390X using RXAUI mode.
Fixes:
364e9d7776a3 ("net: dsa: mv88e6xxx: Power on/off SERDES on cmode change")
Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andrew Lunn [Thu, 28 Feb 2019 17:14:03 +0000 (18:14 +0100)]
net: dsa: mv88e6xxx: Fix u64 statistics
The switch maintains u64 counters for the number of octets sent and
received. These are kept as two u32's which need to be combined. Fix
the combing, which wrongly worked on u16's.
Fixes:
80c4627b2719 ("dsa: mv88x6xxx: Refactor getting a single statistic")
Reported-by: Chris Healy <Chris.Healy@zii.aero>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Igor Druzhinin [Thu, 28 Feb 2019 14:11:26 +0000 (14:11 +0000)]
xen-netback: don't populate the hash cache on XenBus disconnect
Occasionally, during the disconnection procedure on XenBus which
includes hash cache deinitialization there might be some packets
still in-flight on other processors. Handling of these packets includes
hashing and hash cache population that finally results in hash cache
data structure corruption.
In order to avoid this we prevent hashing of those packets if there
are no queues initialized. In that case RCU protection of queues guards
the hash cache as well.
Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Igor Druzhinin [Thu, 28 Feb 2019 12:48:03 +0000 (12:48 +0000)]
xen-netback: fix occasional leak of grant ref mappings under memory pressure
Zero-copy callback flag is not yet set on frag list skb at the moment
xenvif_handle_frag_list() returns -ENOMEM. This eventually results in
leaking grant ref mappings since xenvif_zerocopy_callback() is never
called for these fragments. Those eventually build up and cause Xen
to kill Dom0 as the slots get reused for new mappings:
"d0v0 Attempt to implicitly unmap a granted PTE
c010000329fce005"
That behavior is observed under certain workloads where sudden spikes
of page cache writes coexist with active atomic skb allocations from
network traffic. Additionally, rework the logic to deal with frag_list
deallocation in a single place.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matthias Maennich [Thu, 28 Feb 2019 11:36:52 +0000 (11:36 +0000)]
sctp: chunk.c: correct format string for size_t in printk
According to Documentation/core-api/printk-formats.rst, size_t should be
printed with %zu, rather than %Zu.
In addition, using %Zu triggers a warning on clang (-Wformat-extra-args):
net/sctp/chunk.c:196:25: warning: data argument not used by format string [-Wformat-extra-args]
__func__, asoc, max_data);
~~~~~~~~~~~~~~~~^~~~~~~~~
./include/linux/printk.h:440:49: note: expanded from macro 'pr_warn_ratelimited'
printk_ratelimited(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~
./include/linux/printk.h:424:17: note: expanded from macro 'printk_ratelimited'
printk(fmt, ##__VA_ARGS__); \
~~~ ^
Fixes:
5b5e0928f742 ("lib/vsprintf.c: remove %Z support")
Link: https://github.com/ClangBuiltLinux/linux/issues/378
Signed-off-by: Matthias Maennich <maennich@google.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sheng Lan [Thu, 28 Feb 2019 10:47:58 +0000 (18:47 +0800)]
net: netem: fix skb length BUG_ON in __skb_to_sgvec
It can be reproduced by following steps:
1. virtio_net NIC is configured with gso/tso on
2. configure nginx as http server with an index file bigger than 1M bytes
3. use tc netem to produce duplicate packets and delay:
tc qdisc add dev eth0 root netem delay 100ms 10ms 30% duplicate 90%
4. continually curl the nginx http server to get index file on client
5. BUG_ON is seen quickly
[
10258690.371129] kernel BUG at net/core/skbuff.c:4028!
[
10258690.371748] invalid opcode: 0000 [#1] SMP PTI
[
10258690.372094] CPU: 5 PID: 0 Comm: swapper/5 Tainted: G W 5.0.0-rc6 #2
[
10258690.372094] RSP: 0018:
ffffa05797b43da0 EFLAGS:
00010202
[
10258690.372094] RBP:
00000000000005ea R08:
0000000000000000 R09:
00000000000005ea
[
10258690.372094] R10:
ffffa0579334d800 R11:
00000000000002c0 R12:
0000000000000002
[
10258690.372094] R13:
0000000000000000 R14:
ffffa05793122900 R15:
ffffa0578f7cb028
[
10258690.372094] FS:
0000000000000000(0000) GS:
ffffa05797b40000(0000) knlGS:
0000000000000000
[
10258690.372094] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[
10258690.372094] CR2:
00007f1a6dc00868 CR3:
000000001000e000 CR4:
00000000000006e0
[
10258690.372094] Call Trace:
[
10258690.372094] <IRQ>
[
10258690.372094] skb_to_sgvec+0x11/0x40
[
10258690.372094] start_xmit+0x38c/0x520 [virtio_net]
[
10258690.372094] dev_hard_start_xmit+0x9b/0x200
[
10258690.372094] sch_direct_xmit+0xff/0x260
[
10258690.372094] __qdisc_run+0x15e/0x4e0
[
10258690.372094] net_tx_action+0x137/0x210
[
10258690.372094] __do_softirq+0xd6/0x2a9
[
10258690.372094] irq_exit+0xde/0xf0
[
10258690.372094] smp_apic_timer_interrupt+0x74/0x140
[
10258690.372094] apic_timer_interrupt+0xf/0x20
[
10258690.372094] </IRQ>
In __skb_to_sgvec(), the skb->len is not equal to the sum of the skb's
linear data size and nonlinear data size, thus BUG_ON triggered.
Because the skb is cloned and a part of nonlinear data is split off.
Duplicate packet is cloned in netem_enqueue() and may be delayed
some time in qdisc. When qdisc len reached the limit and returns
NET_XMIT_DROP, the skb will be retransmit later in write queue.
the skb will be fragmented by tso_fragment(), the limit size
that depends on cwnd and mss decrease, the skb's nonlinear
data will be split off. The length of the skb cloned by netem
will not be updated. When we use virtio_net NIC and invoke skb_to_sgvec(),
the BUG_ON trigger.
To fix it, netem returns NET_XMIT_SUCCESS to upper stack
when it clones a duplicate packet.
Fixes:
35d889d1 ("sch_netem: fix skb leak in netem_enqueue()")
Signed-off-by: Sheng Lan <lansheng@huawei.com>
Reported-by: Qin Ji <jiqin.ji@huawei.com>
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 28 Feb 2019 17:18:07 +0000 (09:18 -0800)]
Merge tag 'mmc-v5.0-rc8' of git://git./linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"MMC core:
- Fix NULL ptr crash for a special test case
- Align max segment size with logical block size to prevent bugs in
v5.1-rc1.
MMC host:
- cqhci: Minor fixes
- tmio: Prevent interrupt storm
- tmio: Fixup SD/MMC card initialization
- spi: Allow card to be detected during probe
- sdhci-esdhc-imx: Fixup fix for ERR004536"
* tag 'mmc-v5.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-esdhc-imx: correct the fix of ERR004536
mmc: core: align max segment size with logical block size
mmc: cqhci: Fix a tiny potential memory leak on error condition
mmc: cqhci: fix space allocated for transfer descriptor
mmc: core: Fix NULL ptr crash from mmc_should_fail_request
mmc: tmio: fix access width of Block Count Register
mmc: tmio_mmc_core: don't claim spurious interrupts
mmc: spi: Fix card detection during probe
Linus Torvalds [Thu, 28 Feb 2019 17:05:18 +0000 (09:05 -0800)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
"This fixes a compiler warning introduced by a previous fix, as well as
two crash bugs on ARM"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: sha512/arm - fix crash bug in Thumb2 build
crypto: sha256/arm - fix crash bug in Thumb2 build
crypto: ccree - add missing inline qualifier
Greg Kroah-Hartman [Thu, 28 Feb 2019 15:34:37 +0000 (16:34 +0100)]
kvm: properly check debugfs dentry before using it
debugfs can now report an error code if something went wrong instead of
just NULL. So if the return value is to be used as a "real" dentry, it
needs to be checked if it is an error before dereferencing it.
This is now happening because of
ff9fb72bc077 ("debugfs: return error
values, not NULL"). syzbot has found a way to trigger multiple debugfs
files attempting to be created, which fails, and then the error code
gets passed to dentry_path_raw() which obviously does not like it.
Reported-by: Eric Biggers <ebiggers@kernel.org>
Reported-and-tested-by: syzbot+7857962b4d45e602b8ad@syzkaller.appspotmail.com
Cc: "Radim Krčmář" <rkrcmar@redhat.com>
Cc: kvm@vger.kernel.org
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Maarten Lankhorst [Thu, 28 Feb 2019 12:25:43 +0000 (13:25 +0100)]
drm/doc: Fix copy paste error in drm_crtc_funcs.destroy()
The function is about cleaning up CRTC resources, not plane resources,
fix this in docbook.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
BOUGH CHEN [Thu, 28 Feb 2019 10:15:42 +0000 (10:15 +0000)]
mmc: sdhci-esdhc-imx: correct the fix of ERR004536
Commit
18094430d6b5 ("mmc: sdhci-esdhc-imx: add ADMA Length
Mismatch errata fix") involve the fix of ERR004536, but the
fix is incorrect. Double confirm with IC, need to clear the
bit 7 of register 0x6c rather than set this bit 7.
Here is the definition of bit 7 of 0x6c:
0: enable the new IC fix for ERR004536
1: do not use the IC fix, keep the same as before
Find this issue on i.MX845s-evk board when enable CMDQ, and
let system in heavy loading.
root@imx8mmevk:~# dd if=/dev/mmcblk2 of=/dev/null bs=1M &
root@imx8mmevk:~# memtester 1000M > /dev/zero &
root@imx8mmevk:~# [ 139.897220] mmc2: cqhci: timeout for tag 16
[ 139.901417] mmc2: cqhci: ============ CQHCI REGISTER DUMP ===========
[ 139.907862] mmc2: cqhci: Caps: 0x0000310a | Version: 0x00000510
[ 139.914311] mmc2: cqhci: Config: 0x00001001 | Control: 0x00000000
[ 139.920753] mmc2: cqhci: Int stat: 0x00000000 | Int enab: 0x00000006
[ 139.927193] mmc2: cqhci: Int sig: 0x00000006 | Int Coal: 0x00000000
[ 139.933634] mmc2: cqhci: TDL base: 0x7809c000 | TDL up32: 0x00000000
[ 139.940073] mmc2: cqhci: Doorbell: 0x00030000 | TCN: 0x00000000
[ 139.946518] mmc2: cqhci: Dev queue: 0x00010000 | Dev Pend: 0x00010000
[ 139.952967] mmc2: cqhci: Task clr: 0x00000000 | SSC1: 0x00011000
[ 139.959411] mmc2: cqhci: SSC2: 0x00000001 | DCMD rsp: 0x00000000
[ 139.965857] mmc2: cqhci: RED mask: 0xfdf9a080 | TERRI: 0x00000000
[ 139.972308] mmc2: cqhci: Resp idx: 0x0000002e | Resp arg: 0x00000900
[ 139.978761] mmc2: sdhci: ============ SDHCI REGISTER DUMP ===========
[ 139.985214] mmc2: sdhci: Sys addr: 0xb2c19000 | Version: 0x00000002
[ 139.991669] mmc2: sdhci: Blk size: 0x00000200 | Blk cnt: 0x00000400
[ 139.998127] mmc2: sdhci: Argument: 0x40110400 | Trn mode: 0x00000033
[ 140.004618] mmc2: sdhci: Present: 0x01088a8f | Host ctl: 0x00000030
[ 140.011113] mmc2: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
[ 140.017583] mmc2: sdhci: Wake-up: 0x00000008 | Clock: 0x0000000f
[ 140.024039] mmc2: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
[ 140.030497] mmc2: sdhci: Int enab: 0x107f4000 | Sig enab: 0x107f4000
[ 140.036972] mmc2: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502
[ 140.043426] mmc2: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
[ 140.049867] mmc2: sdhci: Cmd: 0x00002c1a | Max curr: 0x00ffffff
[ 140.056314] mmc2: sdhci: Resp[0]: 0x00000900 | Resp[1]: 0xffffffff
[ 140.062755] mmc2: sdhci: Resp[2]: 0x328f5903 | Resp[3]: 0x00d00f00
[ 140.069195] mmc2: sdhci: Host ctl2: 0x00000008
[ 140.073640] mmc2: sdhci: ADMA Err: 0x00000007 | ADMA Ptr: 0x7809c108
[ 140.080079] mmc2: sdhci: ============================================
[ 140.086662] mmc2: running CQE recovery
Fixes:
18094430d6b5 ("mmc: sdhci-esdhc-imx: add ADMA Length Mismatch errata fix")
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Lan Tianyu [Mon, 25 Feb 2019 14:31:14 +0000 (22:31 +0800)]
x86/hyper-v: Fix definition of HV_MAX_FLUSH_REP_COUNT
The max flush rep count of HvFlushGuestPhysicalAddressList hypercall is
equal with how many entries of union hv_gpa_page_range can be populated
into the input parameter page.
The code lacks parenthesis around PAGE_SIZE - 2 * sizeof(u64) which results
in bogus computations. Add them.
Fixes:
cc4edae4b924 ("x86/hyper-v: Add HvFlushGuestAddressList hypercall support")
Signed-off-by: Lan Tianyu <Tianyu.Lan@microsoft.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: kys@microsoft.com
Cc: haiyangz@microsoft.com
Cc: sthemmin@microsoft.com
Cc: sashal@kernel.org
Cc: bp@alien8.de
Cc: hpa@zytor.com
Cc: gregkh@linuxfoundation.org
Cc: devel@linuxdriverproject.org
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190225143114.5149-1-Tianyu.Lan@microsoft.com
Julia Lawall [Sat, 23 Feb 2019 13:20:36 +0000 (14:20 +0100)]
tee: optee: add missing of_node_put after of_device_is_available
Add an of_node_put when a tested device node is not available.
The semantic patch that fixes this problem is as follows
(http://coccinelle.lip6.fr):
// <smpl>
@@
identifier f;
local idexpression e;
expression x;
@@
e = f(...);
... when != of_node_put(e)
when != x = e
when != e = x
when any
if (<+...of_device_is_available(e)...+>) {
... when != of_node_put(e)
(
return e;
|
+ of_node_put(e);
return ...;
)
}
// </smpl>
Fixes:
db878f76b9ff ("tee: optee: take DT status property into account")
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Daniel Vetter [Thu, 21 Feb 2019 15:58:57 +0000 (16:58 +0100)]
drm/bochs: Drop best_encoder
This is the default for atomic drivers.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20190221155857.19773-2-daniel.vetter@ffwll.ch
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Gerd Hoffmann [Wed, 27 Feb 2019 14:44:41 +0000 (15:44 +0100)]
drm/virtio: implement prime export
Just run drm_prime_pages_to_sg() on the ttm pages list to get an
sg_table for export. The pages list is created at object initialization
time, so there should be no need to handle an unpopulated page list.
Add a sanity check nevertheless.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20190227144441.6755-4-kraxel@redhat.com
Gerd Hoffmann [Wed, 27 Feb 2019 14:44:40 +0000 (15:44 +0100)]
drm/virtio: remove prime pin/unpin callbacks.
virtio-gpu objects never move around, so effectively they are
pinned all the time. Therefore we don't need the (optional)
pin/unpin callbacks. Remove them.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20190227144441.6755-3-kraxel@redhat.com
Gerd Hoffmann [Wed, 27 Feb 2019 14:44:39 +0000 (15:44 +0100)]
drm/virtio: implement prime mmap
Sync gem vm_node.start with ttm vm_node.start,
then we can just call drm_gem_prime_mmap().
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20190227144441.6755-2-kraxel@redhat.com
Eric Biggers [Sat, 23 Feb 2019 06:54:08 +0000 (22:54 -0800)]
crypto: arm64/chacha - fix hchacha_block_neon() for big endian
On big endian arm64 kernels, the xchacha20-neon and xchacha12-neon
self-tests fail because hchacha_block_neon() outputs little endian words
but the C code expects native endianness. Fix it to output the words in
native endianness (which also makes it match the arm32 version).
Fixes:
cc7cf991e9eb ("crypto: arm64/chacha20 - add XChaCha20 support")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Eric Biggers [Sat, 23 Feb 2019 06:54:07 +0000 (22:54 -0800)]
crypto: arm64/chacha - fix chacha_4block_xor_neon() for big endian
The change to encrypt a fifth ChaCha block using scalar instructions
caused the chacha20-neon, xchacha20-neon, and xchacha12-neon self-tests
to start failing on big endian arm64 kernels. The bug is that the
keystream block produced in 32-bit scalar registers is directly XOR'd
with the data words, which are loaded and stored in native endianness.
Thus in big endian mode the data bytes end up XOR'd with the wrong
bytes. Fix it by byte-swapping the keystream words in big endian mode.
Fixes:
2fe55987b262 ("crypto: arm64/chacha - use combined SIMD/ALU routine for more speed")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Paul Moore [Tue, 26 Feb 2019 00:06:06 +0000 (19:06 -0500)]
netlabel: fix out-of-bounds memory accesses
There are two array out-of-bounds memory accesses, one in
cipso_v4_map_lvl_valid(), the other in netlbl_bitmap_walk(). Both
errors are embarassingly simple, and the fixes are straightforward.
As a FYI for anyone backporting this patch to kernels prior to v4.8,
you'll want to apply the netlbl_bitmap_walk() patch to
cipso_v4_bitmap_walk() as netlbl_bitmap_walk() doesn't exist before
Linux v4.8.
Reported-by: Jann Horn <jannh@google.com>
Fixes:
446fda4f2682 ("[NetLabel]: CIPSOv4 engine")
Fixes:
3faa8f982f95 ("netlabel: Move bitmap manipulation functions to the NetLabel core.")
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David Ahern [Mon, 25 Feb 2019 21:55:48 +0000 (13:55 -0800)]
ipv4: Pass original device to ip_rcv_finish_core
ip_route_input_rcu expects the original ingress device (e.g., for
proper multicast handling). The skb->dev can be changed by l3mdev_ip_rcv,
so dev needs to be saved prior to calling it. This was the behavior prior
to the listify changes.
Fixes:
5fa12739a53d0 ("net: ipv4: listify ip_rcv_finish")
Cc: Edward Cree <ecree@solarflare.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 28 Feb 2019 05:28:59 +0000 (21:28 -0800)]
Merge branch 'pmtu-selftest-fixes'
Paolo Abeni says:
====================
selftests: pmtu: fix and increase coverage
This series includes a fixup for the pmtu.sh test script, related to IPv6
address management, and adds coverage for the recently reported and fixed
PMTU exception issue
v2 -> v3:
- more cleanups
v1 -> v2:
- several script cleanups
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Mon, 25 Feb 2019 15:08:37 +0000 (16:08 +0100)]
selftests: pmtu: add explicit tests for PMTU exceptions cleanup
Add a couple of new tests, explicitly checking that the kernel
timely releases PMTU exceptions on related device removal.
This is mostly a regression test vs the issue fixed by
commit
f5b51fe804ec ("ipv6: route: purge exception on removal")
Only 2 new test cases have been added, instead of extending all
the existing ones, because the reproducer requires executing
several commands and would slow down too much the tests otherwise.
v2 -> v3:
- more cleanup, still from Stefano
v1 -> v2:
- several script cleanups, as suggested by Stefano
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Mon, 25 Feb 2019 15:08:36 +0000 (16:08 +0100)]
selftests: pmtu: disable DAD in all namespaces
Otherwise, the configured IPv6 address could be still "tentative"
at test time, possibly causing tests failures.
We can also drop some sleep along the code and decrease the
timeout for most commands so that the test runtime decreases.
v1 -> v2:
- fix comment (Stefano)
Fixes:
d1f1b9cbf34c ("selftests: net: Introduce first PMTU test")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Max Uvarov [Mon, 25 Feb 2019 09:15:10 +0000 (12:15 +0300)]
net: phy: dp83867: add soft reset delay
Similar to dp83640 delay after soft reset
is needed to set up registers correctly.
Signed-off-by: Max Uvarov <muvarov@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alistair Francis [Thu, 21 Feb 2019 00:33:03 +0000 (00:33 +0000)]
drm/bochs: Fix the ID mismatch error
When running RISC-V QEMU with the Bochs device attached via PCIe the
probe of the Bochs device fails with:
[drm:bochs_hw_init] *ERROR* ID mismatch
This was introduced by this commit:
7780eb9ce8 bochs: convert to drm_dev_register
To fix the error we ensure that pci_enable_device() is called before
bochs_load().
Fixes:
7780eb9ce80f ("bochs: convert to drm_dev_register")
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reported-by: David Abdurachmanov <david.abdurachmanov@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20190221003231.31625-1-alistair.francis@wdc.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Nicholas Kazlauskas [Mon, 7 Jan 2019 17:41:46 +0000 (12:41 -0500)]
drm: Block fb changes for async plane updates
The prepare_fb call always happens on new_plane_state.
The drm_atomic_helper_cleanup_planes checks to see if
plane state pointer has changed when deciding to call cleanup_fb on
either the new_plane_state or the old_plane_state.
For a non-async atomic commit the state pointer is swapped, so this
helper calls prepare_fb on the new_plane_state and cleanup_fb on the
old_plane_state. This makes sense, since we want to prepare the
framebuffer we are going to use and cleanup the the framebuffer we are
no longer using.
For the async atomic update helpers this differs. The async atomic
update helpers perform in-place updates on the existing state. They call
drm_atomic_helper_cleanup_planes but the state pointer is not swapped.
This means that prepare_fb is called on the new_plane_state and
cleanup_fb is called on the new_plane_state (not the old).
In the case where old_plane_state->fb == new_plane_state->fb then
there should be no behavioral difference between an async update
and a non-async commit. But there are issues that arise when
old_plane_state->fb != new_plane_state->fb.
The first is that the new_plane_state->fb is immediately cleaned up
after it has been prepared, so we're using a fb that we shouldn't
be.
The second occurs during a sequence of async atomic updates and
non-async regular atomic commits. Suppose there are two framebuffers
being interleaved in a double-buffering scenario, fb1 and fb2:
- Async update, oldfb = NULL, newfb = fb1, prepare fb1, cleanup fb1
- Async update, oldfb = fb1, newfb = fb2, prepare fb2, cleanup fb2
- Non-async commit, oldfb = fb2, newfb = fb1, prepare fb1, cleanup fb2
We call cleanup_fb on fb2 twice in this example scenario, and any
further use will result in use-after-free.
The simple fix to this problem is to block framebuffer changes
in the drm_atomic_helper_async_check function for now.
v2: Move check by itself, add a FIXME (Daniel)
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Cc: <stable@vger.kernel.org> # v4.14+
Fixes:
fef9df8b5945 ("drm/atomic: initial support for asynchronous plane update")
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Link: https://patchwork.freedesktop.org/patch/275364/
Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Thu, 28 Feb 2019 02:53:11 +0000 (12:53 +1000)]
Merge tag 'imx-drm-next-2019-02-22' of git://git.pengutronix.de/pza/linux into drm-next
drm/imx: handle pending updates better, add plane zpos property support
- Add a mechanism to only send commit done events once all pending
updates have been applied. This closes a small race window where
already armed events could fire even though the double buffered
hardware update just missed the update window.
- Add plane zpos property support to allow placing the overlay plane
behind the primary plane.
- Allow building imx-drm on all platforms under COMPILE_TEST.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Philipp Zabel <pza@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20190222112350.m3ucezilqx6cyest@pengutronix.de
Thomas Bogendoerfer [Wed, 27 Feb 2019 09:42:56 +0000 (10:42 +0100)]
MIPS: fix memory setup for platforms with PHYS_OFFSET != 0
For platforms, which use a PHYS_OFFSET != 0, symbol _end also
contains that offset. So when calling memblock_reserve() for
reserving kernel the size argument needs to be adjusted.
Fixes:
bcec54bf3118 ("mips: switch to NO_BOOTMEM")
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org # v4.20+
Dave Airlie [Thu, 28 Feb 2019 02:39:59 +0000 (12:39 +1000)]
Merge branch 'drm-fixes-5.0' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
Fix for variable refresh rate stuttering
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190227192115.14597-1-alexander.deucher@amd.com
Jann Horn [Wed, 27 Feb 2019 20:29:52 +0000 (21:29 +0100)]
mm: enforce min addr even if capable() in expand_downwards()
security_mmap_addr() does a capability check with current_cred(), but
we can reach this code from contexts like a VFS write handler where
current_cred() must not be used.
This can be abused on systems without SMAP to make NULL pointer
dereferences exploitable again.
Fixes:
8869477a49c3 ("security: protect from stack expansion into low vm addresses")
Cc: stable@kernel.org
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Lucas Stach [Thu, 11 Jan 2018 16:48:29 +0000 (17:48 +0100)]
dma-buf: clarify locking documentation for reservation_object_get_excl
The documentation was misleading, as for a lot of use-cases holding
the RCU read side lock is sufficient.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180111165302.25556-2-l.stach@pengutronix.de
Lucas Stach [Tue, 13 Jun 2017 08:26:46 +0000 (10:26 +0200)]
dma-buf: add some lockdep asserts to the reservation object implementation
This adds lockdep asserts to the reservation functions which state in their
documentation that obj->lock must be held. Allows builds with PROVE_LOCKING
enabled to check that the locking requirements are met.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180111165302.25556-1-l.stach@pengutronix.de
Chris Wilson [Fri, 4 Aug 2017 08:23:28 +0000 (09:23 +0100)]
drm: Wake up next in drm_read() chain if we are forced to putback the event
After an event is sent, we try to copy it into the user buffer of the
first waiter in drm_read() and if the user buffer doesn't have enough
room we put it back onto the list. However, we didn't wake up any
subsequent waiter, so that event may sit on the list until either a new
vblank event is sent or a new waiter appears. Rare, but in the worst
case may lead to a stuck process.
Testcase: igt/drm_read/short-buffer-wakeup
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170804082328.17173-1-chris@chris-wilson.co.uk
YueHaibing [Fri, 22 Feb 2019 07:37:58 +0000 (15:37 +0800)]
net: nfc: Fix NULL dereference on nfc_llcp_build_tlv fails
KASAN report this:
BUG: KASAN: null-ptr-deref in nfc_llcp_build_gb+0x37f/0x540 [nfc]
Read of size 3 at addr
0000000000000000 by task syz-executor.0/5401
CPU: 0 PID: 5401 Comm: syz-executor.0 Not tainted 5.0.0-rc7+ #45
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0xfa/0x1ce lib/dump_stack.c:113
kasan_report+0x171/0x18d mm/kasan/report.c:321
memcpy+0x1f/0x50 mm/kasan/common.c:130
nfc_llcp_build_gb+0x37f/0x540 [nfc]
nfc_llcp_register_device+0x6eb/0xb50 [nfc]
nfc_register_device+0x50/0x1d0 [nfc]
nfcsim_device_new+0x394/0x67d [nfcsim]
? 0xffffffffc1080000
nfcsim_init+0x6b/0x1000 [nfcsim]
do_one_initcall+0xfa/0x5ca init/main.c:887
do_init_module+0x204/0x5f6 kernel/module.c:3460
load_module+0x66b2/0x8570 kernel/module.c:3808
__do_sys_finit_module+0x238/0x2a0 kernel/module.c:3902
do_syscall_64+0x147/0x600 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462e99
Code: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:
00007f9cb79dcc58 EFLAGS:
00000246 ORIG_RAX:
0000000000000139
RAX:
ffffffffffffffda RBX:
000000000073bf00 RCX:
0000000000462e99
RDX:
0000000000000000 RSI:
0000000020000280 RDI:
0000000000000003
RBP:
00007f9cb79dcc70 R08:
0000000000000000 R09:
0000000000000000
R10:
0000000000000000 R11:
0000000000000246 R12:
00007f9cb79dd6bc
R13:
00000000004bcefb R14:
00000000006f7030 R15:
0000000000000004
nfc_llcp_build_tlv will return NULL on fails, caller should check it,
otherwise will trigger a NULL dereference.
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes:
eda21f16a5ed ("NFC: Set MIU and RW values from CONNECT and CC LLCP frames")
Fixes:
d646960f7986 ("NFC: Initial LLCP support")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Mario Kleiner [Wed, 30 Jan 2019 05:04:46 +0000 (06:04 +0100)]
drm/amd/display: Use vrr friendly pageflip throttling in DC.
In VRR mode, keep track of the vblank count of the last
completed pageflip in amdgpu_crtc->last_flip_vblank, as
recorded in the pageflip completion handler after each
completed flip.
Use that count to prevent mmio programming a new pageflip
within the same vblank in which the last pageflip completed,
iow. to throttle pageflips to at most one flip per video
frame, while at the same time allowing to request a flip
not only before start of vblank, but also anywhere within
vblank.
The old logic did the same, and made sense for regular fixed
refresh rate flipping, but in vrr mode it prevents requesting
a flip anywhere inside the possibly huge vblank, thereby
reducing framerate in vrr mode instead of improving it, by
delaying a slightly delayed flip requests up to a maximum
vblank duration + 1 scanout duration. This would limit VRR
usefulness to only help applications with a very high GPU
demand, which can submit the flip request before start of
vblank, but then have to wait long for fences to complete.
With this method a flip can be both requested and - after
fences have completed - executed, ie. it doesn't matter if
the request (amdgpu_dm_do_flip()) gets delayed until deep
into the extended vblank due to cpu execution delays. This
also allows clients which want to regulate framerate within
the vrr range a much more fine-grained control of flip timing,
a feature that might be useful for video playback, and is
very useful for neuroscience/vision research applications.
In regular non-VRR mode, retain the old flip submission
behavior. This to keep flip scheduling for fullscreen X11/GLX
OpenGL clients intact, if they use the GLX_OML_sync_control
extensions glXSwapBufferMscOML(, ..., target_msc,...) function
with a specific target_msc target vblank count.
glXSwapBuffersMscOML() or DRI3/Present PresentPixmap() will
not flip at the proper target_msc for a non-zero target_msc
if VRR mode is active with this patch. They'd often flip one
frame too early. However, this limitation should not matter
much in VRR mode, as scheduling based on vblank counts is
pretty futile/unusable under variable refresh duration
anyway, so no real extra harm is done.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
projects / linux-2.6-microblaze.git / log