drm/i915: Clear the GGTT_WRITE bit on unbinding the vma

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While we do flush writes to the vma before unbinding (to make sure they
go through the right detiling register), we may also be concurrently
poking at the GGTT_WRITE bit from set-domain, as we mark all GGTT vma
associated with an object. We know this is for another vma, as we
are currently unbinding this one -- so if this vma will be reused, it
will be refaulted and have its dirty bit set before the next write.

Closes: https://gitlab.freedesktop.org/drm/intel/issues/999
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200121222447.419489-1-chris@chris-wilson.co.uk

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Chris Wilson 2020-01-21 22:24:41 +00:00

parent d2a4bb6f8b

commit 5424f5d794

1 changed files with 9 additions and 2 deletions

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drivers/gpu/drm/i915/i915_vma.c

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