29 Jun
2021
29 Jun
'21
12:04 p.m.
On Tue, 29 Jun 2021 at 12:37, Thomas Hellström thomas.hellstrom@linux.intel.com wrote:
Introduce an interface to migrate objects between regions. This is primarily intended to migrate objects to LMEM for display and to SYSTEM for dma-buf, but might be reused in one form or another for performance-based migration.
v2:
- Verify that the memory region given as an id really exists. (Reported by Matthew Auld)
- Call i915_gem_object_{init,release}_memory_region() when switching region to handle also switching region lists. (Reported by Matthew Auld)
v3:
- Fix i915_gem_object_can_migrate() to return true if object is already in the correct region, even if the object ops doesn't have a migrate() callback.
- Update typo in commit message.
- Fix kerneldoc of i915_gem_object_wait_migration().
v4:
- Improve documentation (Suggested by Mattew Auld and Michael Ruhl)
- Always assume TTM migration hits a TTM move and unsets the pages through move_notify. (Reported by Matthew Auld)
- Add a dma_fence_might_wait() annotation to i915_gem_object_wait_migration() (Suggested by Daniel Vetter)
Reported-by: kernel test robot lkp@intel.com Signed-off-by: Thomas Hellström thomas.hellstrom@linux.intel.com Reviewed-by: Michael J. Ruhl michael.j.ruhl@intel.com
Reviewed-by: Matthew Auld matthew.auld@intel.com