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We should not allow this any more, as it will break with the new userptr
implementation, it could still be made to work, but there's no point in
doing so.
Inspection of the beignet opencl driver shows that it's only used
when normal userptr is not available, which means for new kernels
you will need CONFIG_I915_USERPTR.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-15-maarten.lankhorst@linux.intel.com
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There are a couple of ioctl's related to tiling and cache placement,
that make no sense for userptr, reject those:
- i915_gem_set_tiling_ioctl()
Tiling should always be linear for userptr. Changing placement will
fail with -ENXIO.
- i915_gem_set_caching_ioctl()
Userptr memory should always be cached. Changing caching mode will
fail with -ENXIO.
- i915_gem_set_domain_ioctl()
Still temporarily allowed to work as intended, it's used to check
userptr validity. With the reworked userptr code, it will keep
working for this usecase.
This plus the previous changes have been tested against beignet
by using its own unit tests, and intel-video-compute by using
piglit's opencl tests.
Changes since v1:
- set_domain was apparently used in iris for checking userptr validity,
keep it working as intended.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-14-maarten.lankhorst@linux.intel.com
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It doesn't make sense to export a memory address, we will prevent
allowing access this way to different address spaces when we
rework userptr handling, so best to explicitly disable it.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-13-maarten.lankhorst@linux.intel.com
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Userptr should not need the kernel for a userspace memcpy, userspace
needs to call memcpy directly.
Specifically, disable i915_gem_pwrite_ioctl() and i915_gem_pread_ioctl().
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-12-maarten.lankhorst@linux.intel.com
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As soon as we install fences, we should stop allocating memory
in order to prevent any potential deadlocks.
This is required later on, when we start adding support for
dma-fence annotations.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-11-maarten.lankhorst@linux.intel.com
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Simple adding of i915_gem_object_lock, we may start to pass ww to
get_pages() in the future, but that won't be the case here;
We override shmem's get_pages() handling by calling
i915_gem_object_get_pages_phys(), no ww is needed.
Changes since v1:
- Call shmem put pages directly, the callback would
go down the phys free path.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-10-maarten.lankhorst@linux.intel.com
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Instead of creating a separate object type, we make changes to
the shmem type, to clear struct page backing. This will allow us to
ensure we never run into a race when we exchange obj->ops with other
function pointers.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-9-maarten.lankhorst@linux.intel.com
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We want to remove the changing of ops structure for attaching
phys pages, so we need to kill off HAS_STRUCT_PAGE from ops->flags,
and put it in the bo.
This will remove a potential race of dereferencing the wrong obj->ops
without ww mutex held.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
[danvet: apply with wiggle]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-8-maarten.lankhorst@linux.intel.com
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Doesn't need the full ww lock, only checking if pages are bound.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> #irc
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-7-maarten.lankhorst@linux.intel.com
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Currently we have a lot of places where we hold the gem object lock,
but haven't yet been converted to the ww dance. Complain loudly about
those places.
i915_vma_pin shouldn't have the obj lock held, so we can do a ww dance,
while i915_vma_pin_ww should.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> #irc
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-6-maarten.lankhorst@linux.intel.com
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i915_vma_pin may fail with -EDEADLK when we start locking page tables,
so ensure we handle this correctly.
Changes since v1:
- Drop -EDEADLK todo, this commit handles it.
- Change eb_pin_vma from sort-of-bool + -EDEADLK to a proper int. (Matt)
Cc: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-5-maarten.lankhorst@linux.intel.com
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We need to get rid of allocations in the cmd parser, because it needs
to be called from a signaling context, first move all pinning to
execbuf, where we already hold all locks.
Allocate jump_whitelist in the execbuffer, and add annotations around
intel_engine_cmd_parser(), to ensure we only call the command parser
without allocating any memory, or taking any locks we're not supposed to.
Because i915_gem_object_get_page() may also allocate memory, add a
path to i915_gem_object_get_sg() that prevents memory allocations,
and walk the sg list manually. It should be similarly fast.
This has the added benefit of being able to catch all memory allocation
errors before the point of no return, and return -ENOMEM safely to the
execbuf submitter.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-4-maarten.lankhorst@linux.intel.com
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We're starting to require the reservation lock for pinning,
so wait until we have that.
Update the selftests to handle this correctly, and ensure pin is
called in live_hwsp_rollover_user() and mock_hwsp_freelist().
Changes since v1:
- Fix NULL + XX arithmatic, use casts. (kbuild)
Changes since v2:
- Clear entire cacheline when pinning.
Changes since v3:
- CACHELINE_BYTES -> TIMELINE_SEQNO_BYTES. (jekstrand)
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-3-maarten.lankhorst@linux.intel.com
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Instead of sharing pages with breadcrumbs, give each timeline a
single page. This allows unrelated timelines not to share locks
any more during command submission.
As an additional benefit, seqno wraparound no longer requires
i915_vma_pin, which means we no longer need to worry about a
potential -EDEADLK at a point where we are ready to submit.
Changes since v1:
- Fix erroneous i915_vma_acquire that should be a i915_vma_release (ickle).
- Extra check for completion in intel_read_hwsp().
Changes since v2:
- Fix inconsistent indent in hwsp_alloc() (kbuild)
- memset entire cacheline to 0.
Changes since v3:
- Do same in intel_timeline_reset_seqno(), and clflush for good measure.
Changes since v4:
- Use refcounting on timeline, instead of relying on i915_active.
- Fix waiting on kernel requests.
Changes since v5:
- Bump amount of slots to maximum (256), for best wraparounds.
- Add hwsp_offset to i915_request to fix potential wraparound hang.
- Ensure timeline wrap test works with the changes.
- Assign hwsp in intel_timeline_read_hwsp() within the rcu lock to
fix a hang.
Changes since v6:
- Rename i915_request_active_offset to i915_request_active_seqno(),
and elaborate the function. (tvrtko)
Changes since v7:
- Move hunk to where it belongs. (jekstrand)
- Replace CACHELINE_BYTES with TIMELINE_SEQNO_BYTES. (jekstrand)
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@intel.com> #v1
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323155059.628690-2-maarten.lankhorst@linux.intel.com
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Use i915 prefix to avoid name collision with future vma_lookup() in mm.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210323134208.3077275-1-Liam.Howlett@Oracle.com
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The rationale for this change is roughly as follows:
1. The functionality can be done entirely in userspace with a
combination of mmap + memcpy
2. The only reason anyone in userspace is still using it is because
someone implemented bo_subdata that way in libdrm ages ago and
they're all too lazy to write the 5 lines of code to do a map.
3. This falls cleanly into the category of things which will only get
more painful with local memory support.
These ioctls aren't used much anymore by "real" userspace drivers.
Vulkan has never used them and neither has the iris GL driver. The old
i965 GL driver does use PWRITE for glBufferSubData but it only supports
up through Gen11; Gen12 was never enabled in i965. The compute driver
has never used PREAD/PWRITE. The only remaining user is the media
driver which uses it exactly twice and they're easily removed [1] so
expecting them to drop it going forward is reasonable.
IGT changes which handle this kernel change have also been submitted [2].
[1] https://github.com/intel/media-driver/pull/1160
[2] https://patchwork.freedesktop.org/series/81384/
v2 (Jason Ekstrand):
- Improved commit message with the status of all usermode drivers
- A more future-proof platform check
v3 (Jason Ekstrand):
- Drop the HAS_LMEM checks as they're already covered by the version
checks
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210317234014.2271006-4-jason@jlekstrand.net
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The Vulkan driver in Mesa for Intel hardware never uses relocations if
it's running on a version of i915 that supports at least softpin which
all versions of i915 supporting Gen12 do. On the OpenGL side, Gen12+ is
only supported by iris which never uses relocations. The older i965
driver in Mesa does use relocations but it only supports Intel hardware
through Gen11 and has been deprecated for all hardware Gen9+. The
compute driver also never uses relocations. This only leaves the media
driver which is supposed to be switching to softpin going forward.
Making softpin a requirement for all future hardware seems reasonable.
There is one piece of hardware enabled by default in i915: RKL which was
enabled by e22fa6f0a976 which has not yet landed in drm-next so this
almost but not really a userspace API change for RKL. If it becomes a
problem, we can always add !IS_ROCKETLAKE(eb->i915) to the condition.
Rejecting relocations starting with newer Gen12 platforms has the
benefit that we don't have to bother supporting it on platforms with
local memory. Given how much CPU touching of memory is required for
relocations, not having to do so on platforms where not all memory is
directly CPU-accessible carries significant advantages.
v2 (Jason Ekstrand):
- Allow TGL-LP platforms as they've already shipped
v3 (Jason Ekstrand):
- WARN_ON platforms with LMEM support in case the check is wrong
v4 (Jason Ekstrand):
- Call out Rocket Lake in the commit message
v5 (Jason Ekstrand):
- Drop the HAS_LMEM check as it's already covered by the version check
v6 (Jason Ekstrand):
- Move the check to eb_validate_vma() with all the other exec_object
validation checks.
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Zbigniew Kempczyński <zbigniew.kempczynski@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210317234014.2271006-3-jason@jlekstrand.net
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libdrm has supported the newer execbuffer2 ioctl and using it by default
when it exists since libdrm commit b50964027bef which landed Mar 2, 2010.
The i915 and i965 drivers in Mesa at the time both used libdrm and so
did the Intel X11 back-end. The SNA back-end for X11 has always used
execbuffer2.
v2 (Jason Ekstrand):
- Add a comment saying what Linux version it's being removed in.
Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Keith Packard <keithp@keithp.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210317234014.2271006-2-jason@jlekstrand.net
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git://anongit.freedesktop.org/drm/drm-intel into drm-next
Highlights:
- Alderlake S enabling, via topic branch (Aditya, Anusha, Caz, José, Lucas, Matt, Tejas)
- Refactor display code to shrink intel_display.c etc. (Dave)
- Support more gen 9 and Tigerlake PCH combinations (Lyude, Tejas)
- Add eDP MSO support (Jani)
Display:
- Refactor to support multiple PSR instances (Gwan-gyeong)
- Link training debug logging updates (Sean)
- Updates to eDP fixed mode handling (Jani)
- Disable PSR2 on JSL/EHL (Edmund)
- Support DDR5 and LPDDR5 for bandwidth computation (Clint, José)
- Update VBT DP max link rate table (Shawn)
- Disable the QSES check for HDCP2.2 over MST (Juston)
- PSR updates, refactoring, selective fetch (José, Gwan-gyeong)
- Display init sequence refactoring (Lucas)
- Limit LSPCON to gen 9 and 10 platforms (Ankit)
- Fix DDI lane polarity per VBT info (Uma)
- Fix HDMI vswing programming location in mode set (Ville)
- Various display improvements and refactorings and cleanups (Ville)
- Clean up DDI clock routing and readout (Ville)
- Workaround async flip + VT-d corruption on HSW/BDW (Ville)
- SAGV watermark fixes and cleanups (Ville)
- Silence pipe tracepoint WARNs (Ville)
Other:
- Remove require_force_probe protection from RKL, may need to be revisited (Tejas)
- Detect loss of MMIO access (Matt)
- GVT display improvements
- drm/i915: Disable runtime power management during shutdown (Imre)
- Perf/OA updates (Umesh)
- Remove references to struct drm_device.pdev, via topic branch (Thomas)
- Backmerge (Jani)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87v99rnk1g.fsf@intel.com
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drm-intel-next
gvt-next-2021-03-16
- Parse accurate vGPU virtual display rate (Colin)
- Convert vblank timer as per-vGPU based on current rate (Colin)
- spelling fix (Bhaskar)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
From: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210316074330.GC1551@zhen-hp.sh.intel.com
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git://anongit.freedesktop.org/drm/drm-misc into drm-next
drm-misc-next for 5.13:
UAPI Changes:
Cross-subsystem Changes:
Core Changes:
- %p4cc printk format modifier
- atomic: introduce drm_crtc_commit_wait, rework atomic plane state
helpers to take the drm_commit_state structure
- dma-buf: heaps rework to return a struct dma_buf
- simple-kms: Add plate state helpers
- ttm: debugfs support, removal of sysfs
Driver Changes:
- Convert drivers to shadow plane helpers
- arc: Move to drm/tiny
- ast: cursor plane reworks
- gma500: Remove TTM and medfield support
- mxsfb: imx8mm support
- panfrost: MMU IRQ handling rework
- qxl: rework to better handle resources deallocation, locking
- sun4i: Add alpha properties for UI and VI layers
- vc4: RPi4 CEC support
- vmwgfx: doc cleanup
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210303100600.dgnkadonzuvfnu22@gilmour
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One instance of DRM_DEBUG_KMS was leftover in dp_link_training, convert
it to the new shiny.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210310214845.29021-2-sean@poorly.run
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This patch adds some newlines which are missing from debug messages.
This will prevent logs from being stacked up in dmesg.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210310214845.29021-1-sean@poorly.run
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SAMPLE_OA parameter enables sampling of OA buffer and results in a call
to init the OA buffer which initializes the OA unit head/tail pointers.
The OA_EXPONENT parameter controls the periodicity of the OA reports in
the OA buffer and results in starting a hrtimer.
Before gen12, all use cases required the use of the OA buffer and i915
enforced this setting when vetting out the parameters passed. In these
platforms the hrtimer was enabled if OA_EXPONENT was passed. This worked
fine since it was implied that SAMPLE_OA is always passed.
With gen12, this changed. Users can use perf without enabling the OA
buffer as in OAR use cases. While an OAR use case should ideally not
start the hrtimer, we see that passing an OA_EXPONENT parameter will
start the hrtimer even though SAMPLE_OA is not specified. This results
in an uninitialized OA buffer, so the head/tail pointers used to track
the buffer are zero.
This itself does not fail, but if we ran a use-case that SAMPLED the OA
buffer previously, then the OA_TAIL register is still pointing to an old
value. When the timer callback runs, it ends up calculating a
wrong/large number of available reports. Since we do a spinlock_irq_save
and start processing a large number of reports, NMI watchdog fires and
causes a crash.
Start the timer only if SAMPLE_OA is specified.
v2:
- Drop SAMPLE OA check when appending samples (Ashutosh)
- Prevent read if OA buffer is not being sampled
Fixes: 00a7f0d7155c ("drm/i915/tgl: Add perf support on TGL")
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210305210947.58751-1-umesh.nerlige.ramappa@intel.com
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
"A set of irqchip updates:
- Make the GENERIC_IRQ_MULTI_HANDLER configuration correct
- Add a missing DT compatible string for the Ingenic driver
- Remove the pointless debugfs_file pointer from struct irqdomain"
* tag 'irq-urgent-2021-03-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/ingenic: Add support for the JZ4760
dt-bindings/irq: Add compatible string for the JZ4760B
irqchip: Do not blindly select CONFIG_GENERIC_IRQ_MULTI_HANDLER
ARM: ep93xx: Select GENERIC_IRQ_MULTI_HANDLER directly
irqdomain: Remove debugfs_file from struct irq_domain
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fix from Ard Biesheuvel via Borislav Petkov:
"Fix an oversight in the handling of EFI_RT_PROPERTIES_TABLE, which was
added v5.10, but failed to take the SetVirtualAddressMap() RT service
into account"
* tag 'efi-urgent-for-v5.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi: stub: omit SetVirtualAddressMap() if marked unsupported in RT_PROP table
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Merge misc fixes from Andrew Morton:
"28 patches.
Subsystems affected by this series: mm (memblock, pagealloc, hugetlb,
highmem, kfence, oom-kill, madvise, kasan, userfaultfd, memcg, and
zram), core-kernel, kconfig, fork, binfmt, MAINTAINERS, kbuild, and
ia64"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (28 commits)
zram: fix broken page writeback
zram: fix return value on writeback_store
mm/memcg: set memcg when splitting page
mm/memcg: rename mem_cgroup_split_huge_fixup to split_page_memcg and add nr_pages argument
ia64: fix ptrace(PTRACE_SYSCALL_INFO_EXIT) sign
ia64: fix ia64_syscall_get_set_arguments() for break-based syscalls
mm/userfaultfd: fix memory corruption due to writeprotect
kasan: fix KASAN_STACK dependency for HW_TAGS
kasan, mm: fix crash with HW_TAGS and DEBUG_PAGEALLOC
mm/madvise: replace ptrace attach requirement for process_madvise
include/linux/sched/mm.h: use rcu_dereference in in_vfork()
kfence: fix reports if constant function prefixes exist
kfence, slab: fix cache_alloc_debugcheck_after() for bulk allocations
kfence: fix printk format for ptrdiff_t
linux/compiler-clang.h: define HAVE_BUILTIN_BSWAP*
MAINTAINERS: exclude uapi directories in API/ABI section
binfmt_misc: fix possible deadlock in bm_register_write
mm/highmem.c: fix zero_user_segments() with start > end
hugetlb: do early cow when page pinned on src mm
mm: use is_cow_mapping() across tree where proper
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small misc/char driver fixes to resolve some reported
problems:
- habanalabs driver fixes
- Acrn build fixes (reported many times)
- pvpanic module table export fix
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
misc/pvpanic: Export module FDT device table
misc: fastrpc: restrict user apps from sending kernel RPC messages
virt: acrn: Correct type casting of argument of copy_from_user()
virt: acrn: Use EPOLLIN instead of POLLIN
virt: acrn: Use vfs_poll() instead of f_op->poll()
virt: acrn: Make remove_cpu sysfs invisible with !CONFIG_HOTPLUG_CPU
cpu/hotplug: Fix build error of using {add,remove}_cpu() with !CONFIG_SMP
habanalabs: fix debugfs address translation
habanalabs: Disable file operations after device is removed
habanalabs: Call put_pid() when releasing control device
drivers: habanalabs: remove unused dentry pointer for debugfs files
habanalabs: mark hl_eq_inc_ptr() as static
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are some small staging driver fixes for reported problems. They
include:
- wfx header file cleanup patch reverted as it could cause problems
- comedi driver endian fixes
- buffer overflow problems for staging wifi drivers
- build dependency issue for rtl8192e driver
All have been in linux-next for a while with no reported problems"
* tag 'staging-5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (23 commits)
Revert "staging: wfx: remove unused included header files"
staging: rtl8188eu: prevent ->ssid overflow in rtw_wx_set_scan()
staging: rtl8188eu: fix potential memory corruption in rtw_check_beacon_data()
staging: rtl8192u: fix ->ssid overflow in r8192_wx_set_scan()
staging: comedi: pcl726: Use 16-bit 0 for interrupt data
staging: comedi: ni_65xx: Use 16-bit 0 for interrupt data
staging: comedi: ni_6527: Use 16-bit 0 for interrupt data
staging: comedi: comedi_parport: Use 16-bit 0 for interrupt data
staging: comedi: amplc_pc236_common: Use 16-bit 0 for interrupt data
staging: comedi: pcl818: Fix endian problem for AI command data
staging: comedi: pcl711: Fix endian problem for AI command data
staging: comedi: me4000: Fix endian problem for AI command data
staging: comedi: dmm32at: Fix endian problem for AI command data
staging: comedi: das800: Fix endian problem for AI command data
staging: comedi: das6402: Fix endian problem for AI command data
staging: comedi: adv_pci1710: Fix endian problem for AI command data
staging: comedi: addi_apci_1500: Fix endian problem for command sample
staging: comedi: addi_apci_1032: Fix endian problem for COS sample
staging: ks7010: prevent buffer overflow in ks_wlan_set_scan()
staging: rtl8712: Fix possible buffer overflow in r8712_sitesurvey_cmd
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some small tty and serial driver fixes to resolve some
reported problems:
- led tty trigger fixes based on review and were acked by the led
maintainer
- revert a max310x serial driver patch as it was causing problems
- revert a pty change as it was also causing problems
All of these have been in linux-next for a while with no reported
problems"
* tag 'tty-5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
Revert "drivers:tty:pty: Fix a race causing data loss on close"
Revert "serial: max310x: rework RX interrupt handling"
leds: trigger/tty: Use led_set_brightness_sync() from workqueue
leds: trigger: Fix error path to not unlock the unlocked mutex
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a small number of USB fixes for 5.12-rc3 to resolve a bunch
of reported issues:
- usbip fixups for issues found by syzbot
- xhci driver fixes and quirk additions
- gadget driver fixes
- dwc3 QCOM driver fix
- usb-serial new ids and fixes
- usblp fix for a long-time issue
- cdc-acm quirk addition
- other tiny fixes for reported problems
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (25 commits)
xhci: Fix repeated xhci wake after suspend due to uncleared internal wake state
usb: xhci: Fix ASMedia ASM1042A and ASM3242 DMA addressing
xhci: Improve detection of device initiated wake signal.
usb: xhci: do not perform Soft Retry for some xHCI hosts
usbip: fix vudc usbip_sockfd_store races leading to gpf
usbip: fix vhci_hcd attach_store() races leading to gpf
usbip: fix stub_dev usbip_sockfd_store() races leading to gpf
usbip: fix vudc to check for stream socket
usbip: fix vhci_hcd to check for stream socket
usbip: fix stub_dev to check for stream socket
usb: dwc3: qcom: Add missing DWC3 OF node refcount decrement
USB: usblp: fix a hang in poll() if disconnected
USB: gadget: udc: s3c2410_udc: fix return value check in s3c2410_udc_probe()
usb: renesas_usbhs: Clear PIPECFG for re-enabling pipe with other EPNUM
usb: dwc3: qcom: Honor wakeup enabled/disabled state
usb: gadget: f_uac1: stop playback on function disable
usb: gadget: f_uac2: always increase endpoint max_packet_size by one audio slot
USB: gadget: u_ether: Fix a configfs return code
usb: dwc3: qcom: add ACPI device id for sc8180x
Goodix Fingerprint device is not a modem
...
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commit 0d8359620d9b ("zram: support page writeback") introduced two
problems. It overwrites writeback_store's return value as kstrtol's
return value, which makes return value zero so user could see zero as
return value of write syscall even though it wrote data successfully.
It also breaks index value in the loop in that it doesn't increase the
index any longer. It means it can write only first starting block index
so user couldn't write all idle pages in the zram so lose memory saving
chance.
This patch fixes those issues.
Link: https://lkml.kernel.org/r/20210312173949.2197662-2-minchan@kernel.org
Fixes: 0d8359620d9b("zram: support page writeback")
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reported-by: Amos Bianchi <amosbianchi@google.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: John Dias <joaodias@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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writeback_store's return value is overwritten by submit_bio_wait's return
value. Thus, writeback_store will return zero since there was no IO
error. In the end, write syscall from userspace will see the zero as
return value, which could make the process stall to keep trying the write
until it will succeed.
Link: https://lkml.kernel.org/r/20210312173949.2197662-1-minchan@kernel.org
Fixes: 3b82a051c101("drivers/block/zram/zram_drv.c: fix error return codes not being returned in writeback_store")
Signed-off-by: Minchan Kim <minchan@kernel.org>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: John Dias <joaodias@google.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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After is_cow_mapping() is exported in mm.h, replace some manual checks
elsewhere throughout the tree but start to use the new helper.
Link: https://lkml.kernel.org/r/20210217233547.93892-5-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Jason Gunthorpe <jgg@ziepe.ca>
Cc: VMware Graphics <linux-graphics-maintainer@vmware.com>
Cc: Roland Scheidegger <sroland@vmware.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Gal Pressman <galpress@amazon.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Kirill Shutemov <kirill@shutemov.name>
Cc: Kirill Tkhai <ktkhai@virtuozzo.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>
Cc: Wei Zhang <wzam@amazon.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Ten updates: one non code maintainer update for vmw_pvscsi, five code
updates for ibmvfc and four for UFS.
All are either trivial patches or bug fixes"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: vmw_pvscsi: MAINTAINERS: Update maintainer
scsi: ufs: Convert sysfs sprintf/snprintf family to sysfs_emit
scsi: ufs: Remove redundant checks of !hba in suspend/resume callbacks
scsi: ufs: ufs-qcom: Disable interrupt in reset path
scsi: ufs: Minor adjustments to error handling
scsi: ibmvfc: Reinitialize sub-CRQs and perform channel enquiry after LPM
scsi: ibmvfc: Store return code of H_FREE_SUB_CRQ during cleanup
scsi: ibmvfc: Treat H_CLOSED as success during sub-CRQ registration
scsi: ibmvfc: Fix invalid sub-CRQ handles after hard reset
scsi: ibmvfc: Simplify handling of sub-CRQ initialization
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Pull block fixes from Jens Axboe:
"Mostly just random fixes all over the map.
The only odd-one-out change is finally getting the rename of
BIO_MAX_PAGES to BIO_MAX_VECS done. This should've been done with the
multipage bvec change, but it's been left.
Do it now to avoid hassles around changes piling up for the next merge
window.
Summary:
- NVMe pull request:
- one more quirk (Dmitry Monakhov)
- fix max_zone_append_sectors initialization (Chaitanya Kulkarni)
- nvme-fc reset/create race fix (James Smart)
- fix status code on aborts/resets (Hannes Reinecke)
- fix the CSS check for ZNS namespaces (Chaitanya Kulkarni)
- fix a use after free in a debug printk in nvme-rdma (Lv Yunlong)
- Follow-up NVMe error fix for NULL 'id' (Christoph)
- Fixup for the bd_size_lock being IRQ safe, now that the offending
driver has been dropped (Damien).
- rsxx probe failure error return (Jia-Ju)
- umem probe failure error return (Wei)
- s390/dasd unbind fixes (Stefan)
- blk-cgroup stats summing fix (Xunlei)
- zone reset handling fix (Damien)
- Rename BIO_MAX_PAGES to BIO_MAX_VECS (Christoph)
- Suppress uevent trigger for hidden devices (Daniel)
- Fix handling of discard on busy device (Jan)
- Fix stale cache issue with zone reset (Shin'ichiro)"
* tag 'block-5.12-2021-03-12-v2' of git://git.kernel.dk/linux-block:
nvme: fix the nsid value to print in nvme_validate_or_alloc_ns
block: Discard page cache of zone reset target range
block: Suppress uevent for hidden device when removed
block: rename BIO_MAX_PAGES to BIO_MAX_VECS
nvme-pci: add the DISABLE_WRITE_ZEROES quirk for a Samsung PM1725a
nvme-rdma: Fix a use after free in nvmet_rdma_write_data_done
nvme-core: check ctrl css before setting up zns
nvme-fc: fix racing controller reset and create association
nvme-fc: return NVME_SC_HOST_ABORTED_CMD when a command has been aborted
nvme-fc: set NVME_REQ_CANCELLED in nvme_fc_terminate_exchange()
nvme: add NVME_REQ_CANCELLED flag in nvme_cancel_request()
nvme: simplify error logic in nvme_validate_ns()
nvme: set max_zone_append_sectors nvme_revalidate_zones
block: rsxx: fix error return code of rsxx_pci_probe()
block: Fix REQ_OP_ZONE_RESET_ALL handling
umem: fix error return code in mm_pci_probe()
blk-cgroup: Fix the recursive blkg rwstat
s390/dasd: fix hanging IO request during DASD driver unbind
s390/dasd: fix hanging DASD driver unbind
block: Try to handle busy underlying device on discard
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull device properties framework fixes from Rafael Wysocki:
"Prevent software nodes from being registered before their parents and
fix a recent mistake causing already registered software nodes to be
registered again in some cases (Heikki Krogerus)"
* tag 'devprop-5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
software node: Fix device_add_software_node()
software node: Fix node registration
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix an operating performance point (OPP) reference counting
issue and three issues in ARM cpufreq drivers.
Specifics:
- Add a flag to mark OPPs that are not referenced by he OPP core any
more to prevent OPPs from being freed prematurely by mistake (Beata
Michalska).
- Add ARM Vexpress platforms to the cpufreq-dt-platdev blacklist
since the actual scaling of them is handled elsewhere (Sudeep
Holla).
- Fix a function return value check and a possible use-after-free in
the qcom-hw cpufreq driver (Shawn Guo, Wei Yongjun)"
* tag 'pm-5.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
opp: Don't drop extra references to OPPs accidentally
cpufreq: blacklist Arm Vexpress platforms in cpufreq-dt-platdev
cpufreq: qcom-hw: Fix return value check in qcom_cpufreq_hw_cpu_init()
cpufreq: qcom-hw: fix dereferencing freed memory 'data'
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ns can be NULL at this point, and my move of the check from
the original patch by Chaitanya broke this.
Fixes: 0ec84df4953b ("nvme-core: check ctrl css before setting up zns")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"MMC core:
- Fix partition switch time for eMMC
MMC host:
- mmci: Enforce R1B response to fix busy detection for
the stm32 variants
- cqhci: Fix crash when removing mmc module/card"
* tag 'mmc-v5.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: cqhci: Fix random crash when remove mmc module/card
mmc: core: Fix partition switch time for eMMC
mmc: mmci: Add MMC_CAP_NEED_RSP_BUSY for the stm32 variants
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"A small collection fo driver specific fixes that have arrived since
the merge window"
* tag 'regulator-fix-v5.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: mt6315: Fix off-by-one for .n_voltages
regulator: rt4831: Fix return value check in rt4831_regulator_probe()
regulator: pca9450: Clear PRESET_EN bit to fix BUCK1/2/3 voltage setting
regulator: qcom-rpmh: Use correct buck for S1C regulator
regulator: qcom-rpmh: Correct the pmic5_hfsmps515 buck
regulator: pca9450: Fix return value when failing to get sd-vsel GPIO
regulator: mt6315: Return REGULATOR_MODE_INVALID for invalid mode
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"We've got a smattering of changes all over the place which we've
acrued since -rc1. To my knowledge, there aren't any pending issues at
the moment, but there's still plenty of time for something else to
crop up...
Summary:
- Fix booting a 52-bit-VA-aware kernel on Qualcomm Amberwing
- Fix pfn_valid() not to reject all ZONE_DEVICE memory
- Fix memory tagging setup for hotplugged memory regions
- Fix KASAN tagging in page_alloc() when DEBUG_VIRTUAL is enabled
- Fix accidental truncation of CPU PMU event counters
- Fix error code initialisation when failing probe of DMC620 PMU
- Fix return value initialisation for sve-ptrace selftest
- Drop broken support for CMDLINE_EXTEND"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
perf/arm_dmc620_pmu: Fix error return code in dmc620_pmu_device_probe()
arm64: mm: remove unused __cpu_uses_extended_idmap[_level()]
arm64: mm: use a 48-bit ID map when possible on 52-bit VA builds
arm64: perf: Fix 64-bit event counter read truncation
arm64/mm: Fix __enable_mmu() for new TGRAN range values
kselftest: arm64: Fix exit code of sve-ptrace
arm64: mte: Map hotplugged memory as Normal Tagged
arm64: kasan: fix page_alloc tagging with DEBUG_VIRTUAL
arm64/mm: Reorganize pfn_valid()
arm64/mm: Fix pfn_valid() for ZONE_DEVICE based memory
arm64/mm: Drop THP conditionality from FORCE_MAX_ZONEORDER
arm64/mm: Drop redundant ARCH_WANT_HUGE_PMD_SHARE
arm64: Drop support for CMDLINE_EXTEND
arm64: cpufeatures: Fix handling of CONFIG_CMDLINE for idreg overrides
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
"Two fix series and a single cleanup:
- a small cleanup patch to remove unneeded symbol exports
- a series to cleanup Xen grant handling (avoiding allocations in
some cases, and using common defines for "invalid" values)
- a series to address a race issue in Xen event channel handling"
* tag 'for-linus-5.12b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
Xen/gntdev: don't needlessly use kvcalloc()
Xen/gnttab: introduce common INVALID_GRANT_{HANDLE,REF}
Xen/gntdev: don't needlessly allocate k{,un}map_ops[]
Xen: drop exports of {set,clear}_foreign_p2m_mapping()
xen/events: avoid handling the same event on two cpus at the same time
xen/events: don't unmask an event channel when an eoi is pending
xen/events: reset affinity of 2-level event when tearing it down
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* pm-opp:
opp: Don't drop extra references to OPPs accidentally
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Rename a bunch of the skl+ watermark struct members to
have sensible names. Avoids me having to think what
plane_res_b/etc. means.
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210305153610.12177-7-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
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Make the code more typo proof by extracting small helpers that
do the "do we have enough DDB for the WM level?" checks in
a consistent manner.
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210305153610.12177-6-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
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Let's make all the "do we have enough DDB for this WM level?"
checks use min_ddb_alloc. To achieve that we need to populate
this for the transition watermarks as well.
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210305153610.12177-5-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
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For non-transition watermarks we are supposed to check min_ddb_alloc
rather than plane_res_b when determining if we have enough DDB space
for it. A bit too much copy pasta made me check the wrong thing.
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Fixes: df4a50a35e2c ("drm/i915: Zero out SAGV wm when we don't have enough DDB for it")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210305153610.12177-4-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
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Say we have two planes enabled with watermarks configured
as follows:
plane A: wm0=enabled/can_sagv=false, wm1=enabled/can_sagv=true
plane B: wm0=enabled/can_sagv=true, wm1=disabled
This is possible since the latency we use to calculate
can_sagv may not be the same for both planes due to
skl_needs_memory_bw_wa().
In this case skl_crtc_can_enable_sagv() will see that
both planes have enabled at least one watermark level
with can_sagv==true, and thus proceeds to allow SAGV.
However, since plane B does not have wm1 enabled
plane A can't actually use it either. Thus we are
now running with SAGV enabled, but plane A can't
actually tolerate the extra latency it imposes.
To remedy this only allow SAGV on if the highest common
enabled watermark level for all active planes can tolerate
the extra SAGV latency.
Cc: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210305153610.12177-3-ville.syrjala@linux.intel.com
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
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On HSW/BDW with VT-d active the first tile row scanned out
after the first async flip of the frame often ends up corrupted.
Whether the corruption happens or not depends on the scanline
on which the async flip happens, but the behaviour seems very
consistent. Ie. the same set of scanlines (which are most scanlines)
always show the corruption. And another set of scanlines (far less
of them) never shows the corruption.
I discovered that disabling the fetch-stride stretching
feature cures the corruption. This is some kind of TLB related
prefetch thing AFAIK. We already disable it on SNB primary
planes due to a documented workaround. The hardware folks
indicated that disabling this should be fine, so let's go
with that.
And while we're here, let's document the relevant bits on all
pre-skl platforms.
Fixes: 2a636e240c77 ("drm/i915: Implement async flip for ivb/hsw")
Fixes: cda195f13abd ("drm/i915: Implement async flips for bdw")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210220103303.3448-1-ville.syrjala@linux.intel.com
Reviewed-by: Karthik B S <karthik.b.s@intel.com>
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