summaryrefslogtreecommitdiff
path: root/drivers/uio
diff options
context:
space:
mode:
authorBoris Brezillon <boris.brezillon@collabora.com>2019-05-29 09:51:21 +0300
committerRob Herring <robh@kernel.org>2019-06-10 18:14:01 +0300
commitbe7d9f05c53e6fc88525f8e55cf2dae937761799 (patch)
treec0fb452c203168f200831d604b62712d9f03610e /drivers/uio
parent652b8b086538c8a10de5aa5cbdaef79333b46358 (diff)
downloadlinux-be7d9f05c53e6fc88525f8e55cf2dae937761799.tar.xz
drm/gem_shmem: Use a writecombine mapping for ->vaddr
Right now, the BO is mapped as a cached region when ->vmap() is called and the underlying object is not a dmabuf. Doing that makes cache management a bit more complicated (you'd need to call dma_map/unmap_sg() on the ->sgt field everytime the BO is about to be passed to the GPU/CPU), so let's map the BO with writecombine attributes instead (as done in most drivers). Fixes: 2194a63a818d ("drm: Add library for shmem backed GEM objects") Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20190529065121.13485-1-boris.brezillon@collabora.com
Diffstat (limited to 'drivers/uio')
0 files changed, 0 insertions, 0 deletions