drm/xe: Issue GGTT invalidation under lock in ggtt_node_remove

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Async work (e.g., GuC queue teardowns) can call ggtt_node_remove, so the
operation must be performed under the GGTT lock to ensure the GGTT
online check remains stable. GGTT insertion and removal are heavyweight
operations (e.g., queue create/destroy), so the additional serialization
cost is negligible compared to ensuring correctness.

Fixes: 4f3a998a17 ("drm/xe: Open-code GGTT MMIO access protection")
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>
Link: https://patch.msgid.link/20260326011207.62373-1-matthew.brost@intel.com

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Matthew Brost 2026-03-25 18:12:07 -07:00

parent 1600b49b08

commit 225d02cb46

1 changed files with 2 additions and 7 deletions

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drivers/gpu/drm/xe/xe_ggtt.c

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