drm/gpusvm: move dma_addr allocation before the notifier lock

Browse source

The dma_addr allocation was in a lazy allocation flow, it needs unlock
and goto map_pages. The allocation only needs npages, so just do it
before taking the lock. Drop the map_pages label and the relock flow, so
the sequence becomes fault, allocate, then lock, validate, map and
unlock. No functional change intended.

Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Honglei Huang <honghuan@amd.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260905133142.3628027-2-honghuan@amd.com

...

This commit is contained in:

Honglei Huang 2026-09-05 21:31:37 +08:00 • committed by Matthew Brost

parent fcc2431d22

commit ca76137442

1 changed files with 9 additions and 13 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

22

drivers/gpu/drm/drm_gpusvm.c

View file