diff options
| author |   Jerome Glisse <jglisse@redhat.com> | 2010-12-03 16:38:19 -0500 |
|---|---|---|
| committer |   Dave Airlie <airlied@redhat.com> | 2010-12-08 09:33:41 +1000 |
| commit | 93225b0d7bc030f4a93165347a65893685822d70 (patch) | |
| tree | 86e3dda44c3b327f91e2fcc2355f35639a4aab53 | |
| parent | drm: Don't try and disable an encoder that was never enabled (diff) | |
| download | linux-dev-93225b0d7bc030f4a93165347a65893685822d70.tar.xz linux-dev-93225b0d7bc030f4a93165347a65893685822d70.zip | |
drm/radeon/kms: forbid big bo allocation (fdo 31708) v3
Forbid allocating buffer bigger than visible VRAM or GTT, also
properly set lpfn field.
v2 - use max macro
- silence warning
v3 - don't explicitly set range limit
- use min macro
Cc: stable <stable@kernel.org>
Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_object.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index 1d067743fee0..a598d0049aa5 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -69,7 +69,7 @@ void radeon_ttm_placement_from_domain(struct radeon_bo *rbo, u32 domain) u32 c = 0; rbo->placement.fpfn = 0; - rbo->placement.lpfn = rbo->rdev->mc.active_vram_size >> PAGE_SHIFT; + rbo->placement.lpfn = 0; rbo->placement.placement = rbo->placements; rbo->placement.busy_placement = rbo->placements; if (domain & RADEON_GEM_DOMAIN_VRAM) @@ -91,7 +91,8 @@ int radeon_bo_create(struct radeon_device *rdev, struct drm_gem_object *gobj, { struct radeon_bo *bo; enum ttm_bo_type type; - int page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT; + unsigned long page_align = roundup(byte_align, PAGE_SIZE) >> PAGE_SHIFT; + unsigned long max_size = 0; int r; if (unlikely(rdev->mman.bdev.dev_mapping == NULL)) { @@ -104,6 +105,14 @@ int radeon_bo_create(struct radeon_device *rdev, struct drm_gem_object *gobj, } *bo_ptr = NULL; + /* maximun bo size is the minimun btw visible vram and gtt size */ + max_size = min(rdev->mc.visible_vram_size, rdev->mc.gtt_size); + if ((page_align << PAGE_SHIFT) >= max_size) { + printk(KERN_WARNING "%s:%d alloc size %ldM bigger than %ldMb limit\n", + __func__, __LINE__, page_align >> (20 - PAGE_SHIFT), max_size >> 20); + return -ENOMEM; + } + retry: bo = kzalloc(sizeof(struct radeon_bo), GFP_KERNEL); if (bo == NULL) |