@@ -102,7 +102,7 @@ nouveau_channel_prep(struct nouveau_drm *drm, struct nvif_device *device,
chan->drm = drm;
/* allocate memory for dma push buffer */
- target = TTM_PL_FLAG_TT;
+ target = TTM_PL_FLAG_TT | TTM_PL_FLAG_UNCACHED;
if (nouveau_vram_pushbuf)
target = TTM_PL_FLAG_VRAM;
@@ -246,8 +246,8 @@ nv84_fence_create(struct nouveau_drm *drm)
if (ret == 0)
ret = nouveau_bo_new(drm->dev, 16 * priv->base.contexts, 0,
- TTM_PL_FLAG_TT, 0, 0, NULL, NULL,
- &priv->bo_gart);
+ TTM_PL_FLAG_TT | TTM_PL_FLAG_UNCACHED, 0,
+ 0, NULL, NULL, &priv->bo_gart);
if (ret == 0) {
ret = nouveau_bo_pin(priv->bo_gart, TTM_PL_FLAG_TT);
if (ret == 0) {
Specify TTM_PL_FLAG_UNCACHED when allocating GPFIFOs and fences to allow them to be safely accessed by the kernel without being synced on non-coherent architectures. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> --- drm/nouveau_chan.c | 2 +- drm/nv84_fence.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-)