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drm/radeon: Don't move pinned BOs

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The purpose of pinning is to prevent a buffer from moving.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer 2016-03-28 16:39:14 +09:00 committed by Alex Deucher
parent 0e5585dc87
commit e1a575ada8
2 changed files with 10 additions and 0 deletions
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4
drivers/gpu/drm/radeon/radeon_object.c
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@ -799,6 +799,10 @@ int radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo)
if ((offset + size) <= rdev->mc.visible_vram_size)
return 0;
/* Can't move a pinned BO to visible VRAM */
if (rbo->pin_count > 0)
return -EINVAL;
/* hurrah the memory is not visible ! */
radeon_ttm_placement_from_domain(rbo, RADEON_GEM_DOMAIN_VRAM);
lpfn = rdev->mc.visible_vram_size >> PAGE_SHIFT;

6
drivers/gpu/drm/radeon/radeon_ttm.c
View File

@ -397,9 +397,15 @@ static int radeon_bo_move(struct ttm_buffer_object *bo,
struct ttm_mem_reg *new_mem)
{
struct radeon_device *rdev;
struct radeon_bo *rbo;
struct ttm_mem_reg *old_mem = &bo->mem;
int r;
/* Can't move a pinned BO */
rbo = container_of(bo, struct radeon_bo, tbo);
if (WARN_ON_ONCE(rbo->pin_count > 0))
return -EINVAL;
rdev = radeon_get_rdev(bo->bdev);
if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
radeon_move_null(bo, new_mem);