drm/amdgpu: protect XCP scheduler selection

Browse source

amdgpu_xcp_select_scheds() reads the per-XCP scheduler list.
Partition switching rebuilds the same table under xcp_lock.

Take xcp_lock around XCP scheduler selection and release.
This prevents readers from observing partially rebuilt state.

Also revalidate the selected XCP id before indexing the table.
An open file can outlive a switch to another partition mode.

Signed-off-by: Xiang Liu <xiang.liu@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Xiang Liu 2026-06-23 10:31:10 +08:00 • committed by Alex Deucher

parent 6fa33f594e

commit 4a33d82e22

1 changed files with 21 additions and 8 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

29

drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c

View file