Chris Wilson 68184eb7b0 drm/i915: Fixup preempt-to-busy vs reset of a virtual request ... Due to the nature of preempt-to-busy the execlists active tracking and the schedule queue may become temporarily desync'ed (between resubmission to HW and its ack from HW). This means that we may have unwound a request and passed it back to the virtual engine, but it is still inflight on the HW and may even result in a GPU hang. If we detect that GPU hang and try to reset, the hanging request->engine will no longer match the current engine, which means that the request is not on the execlists active list and we should not try to find an older incomplete request. Given that we have deduced this must be a request on a virtual engine, it is the single active request in the context and so must be guilty (as the context is still inflight, it is prevented from being executed on another engine as we process the reset). Fixes: 22b7a426bb ("drm/i915/execlists: Preempt-to-busy") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190923152844.8914-2-chris@chris-wilson.co.uk (cherry picked from commit cb2377a919) Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>		2019-10-09 14:39:30 -07:00
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drm	drm/i915: Fixup preempt-to-busy vs reset of a virtual request	2019-10-09 14:39:30 -07:00
host1x
ipu-v3	gpu: ipu-v3: image-convert: only sample into the next tile if necessary	2019-08-19 16:25:30 +02:00
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