RE: [Intel-gfx] [PATCH 3/6] drm/nouveau: audit bo->resource usage

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>-----Original Message-----
>From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of
>Christian König
>Sent: Thursday, July 7, 2022 6:25 AM
>To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx;
>nouveau@xxxxxxxxxxxxxxxxxxxxx; amd-gfx@xxxxxxxxxxxxxxxxxxxxx
>Cc: Christian König <christian.koenig@xxxxxxx>
>Subject: [Intel-gfx] [PATCH 3/6] drm/nouveau: audit bo->resource usage
>
>Make sure we can at least move and release BOs without backing store.
>
>Signed-off-by: Christian König <christian.koenig@xxxxxxx>

Reviewed-by: Michael J. Ruhl <michael.j.ruhl@xxxxxxxxx>

M

>---
> drivers/gpu/drm/nouveau/nouveau_bo.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
>diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c
>b/drivers/gpu/drm/nouveau/nouveau_bo.c
>index 92cd19021084..f83fb43b2e44 100644
>--- a/drivers/gpu/drm/nouveau/nouveau_bo.c
>+++ b/drivers/gpu/drm/nouveau/nouveau_bo.c
>@@ -1006,7 +1006,8 @@ nouveau_bo_move(struct ttm_buffer_object *bo,
>bool evict,
> 	}
>
> 	/* Fake bo copy. */
>-	if (old_reg->mem_type == TTM_PL_SYSTEM && !bo->ttm) {
>+	if (!old_reg || (old_reg->mem_type == TTM_PL_SYSTEM &&
>+			 !bo->ttm)) {
> 		ttm_bo_move_null(bo, new_reg);
> 		goto out;
> 	}
>--
>2.25.1





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