On Tue, Jun 01, 2021 at 10:54:05AM +0100, Paul Cercueil wrote:

The backing memory does not necessarily have the writecombine attribute set, since commit cf8ccbc72d61 ("drm: Add support for GEM buffers backed by non-coherent memory").

Fixes: cf8ccbc72d61 ("drm: Add support for GEM buffers backed by non-coherent memory") Signed-off-by: Paul Cercueil paul@crapouillou.net

Acked-by: Daniel Vetter daniel.vetter@ffwll.ch

---

drivers/gpu/drm/drm_gem_cma_helper.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c index 4a24af2c5c43..d53388199f34 100644 --- a/drivers/gpu/drm/drm_gem_cma_helper.c +++ b/drivers/gpu/drm/drm_gem_cma_helper.c @@ -104,8 +104,7 @@ __drm_gem_cma_create(struct drm_device *drm, size_t size, bool private)

• @size: size of the object to allocate
• This function creates a CMA GEM object and allocates a contiguous chunk of

• • memory as backing store. The backing memory has the writecombine attribute
• • set.

• • memory as backing store.
  • Returns:
  • A struct drm_gem_cma_object * on success or an ERR_PTR()-encoded negative

-- 2.30.2