7 Jul
2020
7 Jul
'20
9:35 a.m.
On Mon, 6 Jul 2020 at 18:01, Chris Wilson chris@chris-wilson.co.uk wrote:
On eviction, we acquire the vm->mutex and then wait on the vma->active. Thereore when binding and pinning the vma, we must follow the same sequence, lock/pin the vma then mark it active. Otherwise, we mark the vma as active, then wait for the vm->mutex, and meanwhile the evictor holding the mutex waits upon us to complete our activity.
Fixes: 8ccfc20a7d56 ("drm/i915/gt: Mark ring->vma as active while pinned") Signed-off-by: Chris Wilson chris@chris-wilson.co.uk Cc: Tvrtko Ursulin tvrtko.ursulin@intel.com Cc: stable@vger.kernel.org # v5.6+
Reviewed-by: Matthew Auld matthew.auld@intel.com