diff options
| author | Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com> | 2025-07-16 13:21:24 +0530 |
|---|---|---|
| committer | Christian König <christian.koenig@amd.com> | 2025-07-16 12:50:32 +0200 |
| commit | 95a16160ca1d75c66bf7a1c5e0bcaffb18e7c7fc (patch) | |
| tree | 7c040cd08d2548c359b9494f617d4a50deee8a41 /include | |
| parent | cb345f954eacd162601e7d07ca2f0f0a17b54ee3 (diff) | |
drm/amdgpu: Reset the clear flag in buddy during resume
- Added a handler in DRM buddy manager to reset the cleared
flag for the blocks in the freelist.
- This is necessary because, upon resuming, the VRAM becomes
cluttered with BIOS data, yet the VRAM backend manager
believes that everything has been cleared.
v2:
- Add lock before accessing drm_buddy_clear_reset_blocks()(Matthew Auld)
- Force merge the two dirty blocks.(Matthew Auld)
- Add a new unit test case for this issue.(Matthew Auld)
- Having this function being able to flip the state either way would be
good. (Matthew Brost)
v3(Matthew Auld):
- Do merge step first to avoid the use of extra reset flag.
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Suggested-by: Christian König <christian.koenig@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Cc: stable@vger.kernel.org
Fixes: a68c7eaa7a8f ("drm/amdgpu: Enable clear page functionality")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3812
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://lore.kernel.org/r/20250716075125.240637-2-Arunpravin.PaneerSelvam@amd.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/drm/drm_buddy.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/drm/drm_buddy.h b/include/drm/drm_buddy.h index 9689a7c5dd36..513837632b7d 100644 --- a/include/drm/drm_buddy.h +++ b/include/drm/drm_buddy.h @@ -160,6 +160,8 @@ int drm_buddy_block_trim(struct drm_buddy *mm, u64 new_size, struct list_head *blocks); +void drm_buddy_reset_clear(struct drm_buddy *mm, bool is_clear); + void drm_buddy_free_block(struct drm_buddy *mm, struct drm_buddy_block *block); void drm_buddy_free_list(struct drm_buddy *mm, |