[PATCH] drm/radeon: remove visible vram size limit on bo allocation

Alex Deucher alexdeucher at gmail.com
Wed Jul 16 10:26:34 PDT 2014


Now that fallback to gtt is fixed for cpu access, we can
remove this limit.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/radeon/radeon_gem.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
index fdd189b..07a13c9 100644
--- a/drivers/gpu/drm/radeon/radeon_gem.c
+++ b/drivers/gpu/drm/radeon/radeon_gem.c
@@ -55,8 +55,11 @@ int radeon_gem_object_create(struct radeon_device *rdev, int size,
 		alignment = PAGE_SIZE;
 	}
 
-	/* maximun bo size is the minimun btw visible vram and gtt size */
-	max_size = min(rdev->mc.visible_vram_size, rdev->mc.gtt_size);
+	/* Maximum bo size is the gtt size since we use the gtt to handle
+	 * vram to system pool migrations.  We could probably remove this
+	 * check altogether with a little additional work.
+	 */
+	max_size = rdev->mc.gtt_size;
 	if (size > max_size) {
 		DRM_DEBUG("Allocation size %dMb bigger than %ldMb limit\n",
 			  size >> 20, max_size >> 20);
-- 
1.8.3.1



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