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drm/xe/vf: Reset recovery_queued after issuing RESFIX_START

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During VF_RESTORE or VF_RESUME, the GuC sends a migration interrupt and
clears the RESFIX_START marker. If migration or resume occurs before the
VF issues its own RESFIX_START, VF KMD may receive two back-to-back
migration interrupts. VF then sends RESFIX_START to indicate the beginning
of fixups and RESFIX_DONE to mark completion. However, the second
RESFIX_START fails because the GuC is already in the RUNNING state.

Clear the recovery_queued flag after sending a RESFIX_START message to
ignore duplicated IRQs seen before we start actual recovery.

This ensures the state is reset only after the fixup process begins,
avoiding redundant work item queuing.

Fixes: b5fbb94341 ("drm/xe/vf: Introduce RESFIX start marker support")
Signed-off-by: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Tomasz Lis <tomasz.lis@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patch.msgid.link/20251210052546.622809-6-satyanarayana.k.v.p@intel.com
This commit is contained in:
Satyanarayana K V P 2025-12-10 05:25:49 +00:00 committed by Michal Wajdeczko
parent 8d8cf42b03
commit 7319c2ceb2
1 changed files with 8 additions and 5 deletions
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13
drivers/gpu/drm/xe/xe_gt_sriov_vf.c
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@ -1171,10 +1171,6 @@ static bool vf_post_migration_shutdown(struct xe_gt *gt)
return true;
}
spin_lock_irq(&gt->sriov.vf.migration.lock);
gt->sriov.vf.migration.recovery_queued = false;
spin_unlock_irq(&gt->sriov.vf.migration.lock);
xe_guc_ct_flush_and_stop(&gt->uc.guc.ct);
xe_guc_submit_pause_vf(&gt->uc.guc);
xe_tlb_inval_reset(&gt->tlb_inval);
@ -1258,7 +1254,14 @@ static int vf_post_migration_resfix_done(struct xe_gt *gt, u16 marker)
static int vf_post_migration_resfix_start(struct xe_gt *gt, u16 marker)
{
return vf_resfix_start(gt, marker);
int err;
err = vf_resfix_start(gt, marker);
guard(spinlock_irq) (&gt->sriov.vf.migration.lock);
gt->sriov.vf.migration.recovery_queued = false;
return err;
}
static u16 vf_post_migration_next_resfix_marker(struct xe_gt *gt)