AuxXxilium/linux_dsm_epyc7002
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d810583fc2
linux_dsm_epyc7002/drivers/gpu/drm/i915
History
Chris Wilson d810583fc2 drm/i915/execlists: Remove incorrect BUG_ON for schedule-out 
As we may unwind incomplete requests (for preemption) prior to
processing the CSB and the schedule-out events, we may update rq->engine
(resetting it to point back to the parent virtual engine) prior to
calling execlists_schedule_out(), invalidating the assertion that the
request still points to the inflight engine. (The likelihood of this is
increased if the CSB interrupt processing is pushed to the ksoftirqd for
being too slow and direct submission overtakes it.)

Tvrtko summarised it as:
"So unwind from direct submission resets rq->engine and races with
process_csb from the tasklet which notices request has actually
completed."

Reported-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Fixes: df40306902 ("drm/i915/execlists: Lift process_csb() out of the irq-off spinlock")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190907105046.19934-1-chris@chris-wilson.co.uk
2019-09-09 11:28:06 +01:00
..
display drm/i915/tgl: Use refclk/2 as bypass frequency 2019-09-06 08:42:13 -07:00
gem drm/i915: Hook up GT power management 2019-09-06 20:29:58 +01:00
gt drm/i915/execlists: Remove incorrect BUG_ON for schedule-out 2019-09-09 11:28:06 +01:00
gvt drm/i915/psr: Make PSR registers relative to transcoders 2019-08-22 13:09:06 -07:00
oa drm/i915/perf: Refactor oa object to better manage resources 2019-08-07 20:34:39 +01:00
selftests drm/i915: Hook up GT power management 2019-09-06 20:29:58 +01:00
i915_active_types.h drm/i915: Markup expected timeline locks for i915_active 2019-08-16 18:02:07 +01:00
i915_active.c drm/i915: Only activate i915_active debugobject once 2019-08-27 16:41:41 +01:00
i915_active.h drm/i915: Markup expected timeline locks for i915_active 2019-08-16 18:02:07 +01:00
i915_buddy.c drm/i915/buddy: add missing call to i915_global_register 2019-09-09 10:58:20 +01:00
i915_buddy.h drm/i915: buddy allocator 2019-08-10 19:47:40 +01:00
i915_cmd_parser.c drm/i915: extract i915_memcpy.h from i915_drv.h 2019-08-09 12:03:25 +03:00
i915_debugfs.c drm/i915: Protect debugfs per_file_stats with RCU lock 2019-09-06 13:48:46 +01:00
i915_debugfs.h
i915_drv.c drm/i915: Hook up GT power management 2019-09-06 20:29:58 +01:00
i915_drv.h drm/i915/display: Move the commit_tail() disable sequence to separate function 2019-08-29 14:15:29 -07:00
i915_fixed.h
i915_gem_evict.c drm/i915: Replace PIN_NONFAULT with calls to PIN_NOEVICT 2019-08-21 14:07:54 +01:00
i915_gem_fence_reg.c drm/i915: Replace i915_vma_put_fence() 2019-08-22 08:53:42 +01:00
i915_gem_fence_reg.h drm/i915: Track ggtt fence reservations under its own mutex 2019-08-22 08:53:40 +01:00
i915_gem_gtt.c drm/i915: Restrict the aliasing-ppgtt to the size of the ggtt 2019-09-03 05:29:33 +01:00
i915_gem_gtt.h drm/i915: Remove ppgtt->dirty_engines 2019-08-30 20:49:57 +01:00
i915_gem.c drm/i915: Hook up GT power management 2019-09-06 20:29:58 +01:00
i915_gem.h drm/i915: avoid including intel_drv.h via i915_drv.h->i915_trace.h 2019-08-07 12:43:14 +03:00
i915_getparam.c drm/i915: Isolate i915_getparam_ioctl() 2019-08-07 16:48:24 +01:00
i915_globals.c drm/i915: buddy allocator 2019-08-10 19:47:40 +01:00
i915_globals.h drm/i915: buddy allocator 2019-08-10 19:47:40 +01:00
i915_gpu_error.c drm/i915: s/for_each_sgt_dma/for_each_sgt_daddr/ 2019-08-29 21:59:16 +01:00
i915_gpu_error.h drm/i915: Only include active engines in the capture state 2019-08-08 21:54:08 +01:00
i915_ioc32.c
i915_irq.c drm/i915/tgl: Access the right register when handling PSR interruptions 2019-09-04 17:03:35 -07:00
i915_irq.h drm/i915: Extract general GT interrupt handlers 2019-08-12 15:36:13 +01:00
i915_memcpy.c drm/i915: extract i915_memcpy.h from i915_drv.h 2019-08-09 12:03:25 +03:00
i915_memcpy.h drm/i915: extract i915_memcpy.h from i915_drv.h 2019-08-09 12:03:25 +03:00
i915_mm.c drm/i915: Drop expectations of VM_IO from our GGTT mmappings 2019-08-07 12:06:07 +01:00
i915_params.c
i915_params.h
i915_pci.c drm/i915/gtt: Downgrade Cherryview back to aliasing-ppgtt 2019-08-30 20:49:56 +01:00
i915_perf.c drm/i915/perf: Assert locking for i915_init_oa_perf_state() 2019-08-31 16:08:28 +01:00
i915_perf.h drm/i915: extract i915_perf.h from i915_drv.h 2019-08-09 11:52:04 +03:00
i915_pmu.c drm/i915: Convert a few more bland dmesg info to be device specific 2019-08-15 13:13:23 +01:00
i915_pmu.h
i915_priolist_types.h drm/i915: Push the wakeref->count deferral to the backend 2019-08-13 21:09:49 +01:00
i915_pvinfo.h
i915_query.c drm/i915: Add EU stride runtime parameter 2019-08-23 19:14:22 +01:00
i915_query.h
i915_reg.h drm/i915/tgl: move DP_TP_* to transcoder 2019-09-04 17:07:57 -07:00
i915_request.c drm/i915: Protect our local workers against I915_FENCE_TIMEOUT 2019-08-28 18:17:53 +01:00
i915_request.h drm/i915: Protect request retirement with timeline->mutex 2019-08-15 23:21:13 +01:00
i915_scatterlist.c
i915_scatterlist.h drm/i915: s/for_each_sgt_dma/for_each_sgt_daddr/ 2019-08-29 21:59:16 +01:00
i915_scheduler_types.h
i915_scheduler.c drm/i915: Push the wakeref->count deferral to the backend 2019-08-13 21:09:49 +01:00
i915_scheduler.h
i915_selftest.h drm/i915: make i915_selftest.h self-contained 2019-07-30 13:41:35 -07:00
i915_suspend.c drm/i915: extract i915_suspend.h from i915_drv.h 2019-08-09 12:03:05 +03:00
i915_suspend.h drm/i915: extract i915_suspend.h from i915_drv.h 2019-08-09 12:03:05 +03:00
i915_sw_fence_work.c drm/i915: Generalise the clflush dma-worker 2019-08-22 08:27:44 +01:00
i915_sw_fence_work.h drm/i915: Generalise the clflush dma-worker 2019-08-22 08:27:44 +01:00
i915_sw_fence.c Merge drm/drm-next into drm-intel-next-queued 2019-08-22 00:10:36 -07:00
i915_sw_fence.h Merge drm/drm-next into drm-intel-next-queued 2019-08-22 00:10:36 -07:00
i915_syncmap.c
i915_syncmap.h
i915_sysfs.c drm/i915: extract i915_sysfs.h from i915_drv.h 2019-08-09 11:52:09 +03:00
i915_sysfs.h drm/i915: extract i915_sysfs.h from i915_drv.h 2019-08-09 11:52:09 +03:00
i915_trace_points.c
i915_trace.h drm/i915: rename intel_drv.h to display/intel_display_types.h 2019-08-07 12:43:50 +03:00
i915_user_extensions.c
i915_user_extensions.h
i915_utils.c drm/i915: move printing and load error inject to i915_utils.[ch] 2019-08-09 11:51:58 +03:00
i915_utils.h drm/i915/execlists: Lift process_csb() out of the irq-off spinlock 2019-08-16 20:59:02 +01:00
i915_vgpu.c drm/i915: to make vgpu ppgtt notificaiton as atomic operation 2019-08-24 12:12:34 +01:00
i915_vgpu.h
i915_vma.c drm/i915: Replace i915_vma_put_fence() 2019-08-22 08:53:42 +01:00
i915_vma.h drm/i915: Replace i915_vma_put_fence() 2019-08-22 08:53:42 +01:00
intel_csr.c drm/i915/tgl: update DMC firmware to 2.04 2019-08-20 12:49:29 -07:00
intel_csr.h
intel_device_info.c drm/i915: Expand subslice mask 2019-08-23 19:14:27 +01:00
intel_device_info.h drm/i915/tgl: Tigerlake only has global MOCS registers 2019-07-31 07:40:32 -07:00
intel_gvt.c drm/i915: Add i915 to i915_inject_probe_failure 2019-08-02 21:14:29 +01:00
intel_gvt.h
intel_pch.c drm/i915: split out intel_pch.[ch] from i915_drv.[ch] 2019-08-08 11:38:22 +03:00
intel_pch.h drm/i915: split out intel_pch.[ch] from i915_drv.[ch] 2019-08-08 11:38:22 +03:00
intel_pm.c drm/i915: Hook up GT power management 2019-09-06 20:29:58 +01:00
intel_pm.h
intel_runtime_pm.c drm/i915: avoid including intel_drv.h via i915_drv.h->i915_trace.h 2019-08-07 12:43:14 +03:00
intel_runtime_pm.h Merge drm/drm-next into drm-intel-next-queued 2019-07-29 08:51:48 -07:00
intel_sideband.c drm/i915: remove unnecessary includes of intel_display_types.h header 2019-08-07 12:43:55 +03:00
intel_sideband.h
intel_uncore.c drm/i915: split out uncore_mmio_debug 2019-08-09 20:25:24 +01:00
intel_uncore.h drm/i915: split out uncore_mmio_debug 2019-08-09 20:25:24 +01:00
intel_wakeref.c drm/i915: Push the wakeref->count deferral to the backend 2019-08-13 21:09:49 +01:00
intel_wakeref.h drm/i915: Push the wakeref->count deferral to the backend 2019-08-13 21:09:49 +01:00
intel_wopcm.c drm/i915/wopcm: Fix SPDX tag location 2019-08-16 16:50:03 +01:00
intel_wopcm.h drm/i915/wopcm: Don't fail on WOPCM partitioning failure 2019-08-02 21:14:32 +01:00
Kconfig
Kconfig.debug drm/i915: use upstream version of header tests 2019-07-30 12:11:57 +03:00
Kconfig.profile
Makefile drm/i915: Generalise the clflush dma-worker 2019-08-22 08:27:44 +01:00