Commit 7120a447 authored by xinhui pan's avatar xinhui pan Committed by Christian König
Browse files

drm/ttm: Double check mem_type of BO while eviction 



BO might sit in a wrong lru list as there is a small period of memory
moving and lru list updating.

Lets skip eviction if we hit such mismatch.

Suggested-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarxinhui pan <xinhui.pan@amd.com>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211110043149.57554-2-xinhui.pan@amd.com


Signed-off-by: default avatarChristian König <christian.koenig@amd.com>
parent f55aaf63

drivers/gpu/drm/ttm/ttm_bo.c

+2 −1
Original line number Diff line number Diff line
@@ -617,7 +617,8 @@ static bool ttm_bo_evict_swapout_allowable(struct ttm_buffer_object *bo, 
			*busy = !ret;

	}



	if (ret && place && !bo->bdev->funcs->eviction_valuable(bo, place)) {

	if (ret && place && (bo->resource->mem_type != place->mem_type ||

		!bo->bdev->funcs->eviction_valuable(bo, place))) {

		ret = false;

		if (*locked) {

			dma_resv_unlock(bo->base.resv);