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drm/xe/vf: Add xe_gt_recovery_pending helper

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Add xe_gt_recovery_pending helper.

This helper serves as the singular point to determine whether a GT
recovery is currently in progress. Expected callers include the GuC CT
layer and the GuC submission layer. Atomically visable as soon as vCPU
are unhalted until VF recovery completes.

v3:
 - Add GT layer xe_gt_recovery_inprogress (Michal)
 - Don't blow up in memirq not enabled (CI)
 - Add __memirq_received with clear argument (Michal)
 - xe_memirq_sw_int_0_irq_pending rename (Michal)
 - Use offset in xe_memirq_sw_int_0_irq_pending (Michal)
v4:
 - Refactor xe_gt_recovery_inprogress logic around memirq (Michal)
v5:
 - s/inprogress/pending (Michal)
v7:
 - Fix typos, adjust comment (Michal)

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Tomasz Lis <tomasz.lis@intel.com>
Link: https://lore.kernel.org/r/20251008214532.3442967-9-matthew.brost@intel.com
This commit is contained in:
Matthew Brost 2025-10-08 14:45:06 -07:00
commit e1d2e2d878
6 changed files with 99 additions and 4 deletions
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