Signed-off-by: Oded Gabbay oded.gabbay@gmail.com --- drivers/gpu/drm/radeon/radeon_object.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index 84d4563..255faf6 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -33,6 +33,7 @@ #include <linux/slab.h> #include <drm/drmP.h> #include <drm/radeon_drm.h> +#include <drm/drm_cache.h> #include "radeon.h" #include "radeon_trace.h"
@@ -245,6 +246,13 @@ int radeon_bo_create(struct radeon_device *rdev, DRM_INFO_ONCE("Please enable CONFIG_MTRR and CONFIG_X86_PAT for " "better performance thanks to write-combining\n"); bo->flags &= ~(RADEON_GEM_GTT_WC | RADEON_GEM_GTT_UC); +#else + /* + * For architectures that don't support WC memory, + * mask out the WC flag from the BO + */ + if (!drm_arch_can_wc_memory()) + bo->flags &= ~RADEON_GEM_GTT_WC; #endif
radeon_ttm_placement_from_domain(bo, domain);