drm/xe: split VF pause into prepare and revert phases

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Extract xe_sched_submission_stop() + cancel_delayed_work_sync() into a
new guc_exec_queue_pause_prepare() helper, then call it in a first pass
over all queues before the existing revert loop in
xe_guc_submit_pause_vf().

In a multi-queue group a secondary's run_job() can register the primary
queue, which must not race an in-progress revert of a sibling queue.
Stopping every scheduler before reverting any queue prevents that race.

No functional change outside the VF migration path.

Assisted-by: Github-Copilot:Claude-opus-4.8
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260803230528.3428029-7-niranjana.vishwanathapura@intel.com

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Niranjana Vishwanathapura 2026-08-03 16:05:30 -07:00

parent f09360e857

commit 245d86b3d5

1 changed files with 23 additions and 3 deletions

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drivers/gpu/drm/xe/xe_guc_submit.c

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