diff options
| author | Rob Clark <robdclark@chromium.org> | 2020-08-17 09:23:09 -0700 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2020-08-17 12:25:22 -0700 |
| commit | 352c83fb39cae3eff95a8e1ed23006291abb6196 (patch) | |
| tree | 8885052b5566bbe12064036371fed713cd0ba917 /drivers/gpu/drm/msm | |
| parent | f228af11dfa1d1616bc67f3a4119ab77c36181f1 (diff) | |
drm/msm/gpu: make ringbuffer readonly
The GPU has no business writing into the ringbuffer, let's make it
readonly to the GPU.
Fixes: 7198e6b03155 ("drm/msm: add a3xx gpu support")
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_ringbuffer.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/msm_ringbuffer.c b/drivers/gpu/drm/msm/msm_ringbuffer.c index e397c44cc011..39ecb5a18431 100644 --- a/drivers/gpu/drm/msm/msm_ringbuffer.c +++ b/drivers/gpu/drm/msm/msm_ringbuffer.c @@ -27,7 +27,8 @@ struct msm_ringbuffer *msm_ringbuffer_new(struct msm_gpu *gpu, int id, ring->id = id; ring->start = msm_gem_kernel_new(gpu->dev, MSM_GPU_RINGBUFFER_SZ, - MSM_BO_WC, gpu->aspace, &ring->bo, &ring->iova); + MSM_BO_WC | MSM_BO_GPU_READONLY, gpu->aspace, &ring->bo, + &ring->iova); if (IS_ERR(ring->start)) { ret = PTR_ERR(ring->start); |