[PATCH v2 2/2] drm/ttm: check with temporary GTT memory in BO validation

Lang Yu Lang.Yu at amd.com
Mon May 31 11:30:54 UTC 2021


If a BO's backing store is temporary GTT memory, we should
move it in BO validation.

v2: move the check outside of for loop

Signed-off-by: Lang Yu <Lang.Yu at amd.com>
---
 drivers/gpu/drm/ttm/ttm_bo.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
index c32a37d0a460..1802fc77cfcb 100644
--- a/drivers/gpu/drm/ttm/ttm_bo.c
+++ b/drivers/gpu/drm/ttm/ttm_bo.c
@@ -938,6 +938,9 @@ static bool ttm_bo_places_compat(const struct ttm_place *places,
 {
 	unsigned i;
 
+	if (mem->placement & TTM_PL_FLAG_TEMPORARY)
+		return false;
+
 	for (i = 0; i < num_placement; i++) {
 		const struct ttm_place *heap = &places[i];
 
-- 
2.25.1



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