From 1cad629257e76025bcbf490c58de550fb67d4d0e Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Wed, 26 Feb 2020 16:47:50 +0100 Subject: drm/shmem: add support for per object caching flags. Add map_cached bool to drm_gem_shmem_object, to request cached mappings on a per-object base. Check the flag before adding writecombine to pgprot bits. Cc: stable@vger.kernel.org Signed-off-by: Gerd Hoffmann Reviewed-by: Gurchetan Singh Tested-by: Guillaume Gardet Link: http://patchwork.freedesktop.org/patch/msgid/20200226154752.24328-2-kraxel@redhat.com --- include/drm/drm_gem_shmem_helper.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include/drm') diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h index e34a7b7f848a..294b2931c4cc 100644 --- a/include/drm/drm_gem_shmem_helper.h +++ b/include/drm/drm_gem_shmem_helper.h @@ -96,6 +96,11 @@ struct drm_gem_shmem_object { * The address are un-mapped when the count reaches zero. */ unsigned int vmap_use_count; + + /** + * @map_cached: map object cached (instead of using writecombine). + */ + bool map_cached; }; #define to_drm_gem_shmem_obj(obj) \ -- cgit v1.2.3