drm/xe/tlb_inval: add xe_tlb_inval_ggtt_full() GGTT invalidation helper

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Add xe_tlb_inval_ggtt_full() and its GuC backend
send_tlb_inval_ggtt_full() for full engine TLB invalidation
within the requesting VF across all engines.

v2:
- Refactor with new helper xe_tlb_inval_issue_op_wait() and address
  nits (Niranjana)
v3:
- Avoid TOCTOU issue around CT state (Matt Brost)
v4:
- Propagate real send errors instead of masking as -ECANCELED (Sashiko)
v5:
- Handle -ENOTRECOVERABLE (wedged), drop redundant -ECANCELED
  (Matt Brost, Niranjana)

Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Tangudu Tilak Tirumalesh <tilak.tirumalesh.tangudu@intel.com>
Acked-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260827082011.3370672-3-tilak.tirumalesh.tangudu@intel.com
Signed-off-by: Shuicheng Lin <shuicheng.lin@intel.com>

...

This commit is contained in:

Tangudu Tilak Tirumalesh 2026-08-27 13:50:10 +05:30 • committed by Shuicheng Lin

parent ee460b8855

commit 0f0a5aba87

4 changed files with 76 additions and 6 deletions

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29

drivers/gpu/drm/xe/xe_guc_tlb_inval.c

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42

drivers/gpu/drm/xe/xe_tlb_inval.c

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1

drivers/gpu/drm/xe/xe_tlb_inval.h

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10

drivers/gpu/drm/xe/xe_tlb_inval_types.h

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