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Commit c5244987 authored by Oded Gabbay's avatar Oded Gabbay Committed by Alex Deucher
Browse files

drm/radeon: mask out WC from BO on unsupported arches 



Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Reviewed-by: default avatarMichel Dänzer <michel.daenzer@amd.com>
Signed-off-by: default avatarOded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 4b0e4e4a

drivers/gpu/drm/radeon/radeon_object.c

+7 −0
Original line number Diff line number Diff line
@@ -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 +246,12 @@ 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);