On Thu, Dec 10, 2020 at 08:02:20AM +0000, Chris Wilson wrote:
> When we reset the legacy ring context, due to potential corruption over
> suspend/resume, remove the valid bit so that we avoid loading garbage.
>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Matthew Brost <matthew.brost@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/gt/intel_ring_submission.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> index a41b43f445b8..1959e3e5b8e9 100644
> --- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> +++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
> @@ -602,6 +602,7 @@ static int ring_context_pin(struct intel_context *ce, void *unused)
> static void ring_context_reset(struct intel_context *ce)
> {
> intel_ring_reset(ce->ring, ce->ring->emit);
> + __clear_bit(CONTEXT_VALID_BIT, &ce->flags);
> }
>
> static const struct intel_context_ops ring_context_ops = {
> --
> 2.20.1
>
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