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3 Commits

Author SHA1 Message Date
Matthew Brost
7dd11d8804 drm/xe/vf: Close multi-GT GGTT shift race 
As multi-GT VF post-migration recovery can run in parallel on different
workqueues, but both GTs point to the same GGTT, only one GT needs to
shift the GGTT. However, both GTs need to know when this step has
completed. To coordinate this, perform the GGTT shift under the GGTT
lock. With shift being done under the lock, storing the shift value
becomes unnecessary.

In addition to above, move the GGTT VF config from the GT to the tile.

v3:
 - Update commmit message (Tomasz)
v4:
 - Move GGTT values to tile state (Michal)
 - Use GGTT lock (Michal)
v5:
 - Only take GGTT lock during recovery (CI)
 - Drop goto in vf_get_submission_cfg (Michal)
 - Add kernel doc around recovery in xe_gt_sriov_vf_query_config (Michal)
v7:
 - Drop recovery variable (Michal)
 - Use _locked naming (Michal)
 - Use guard (Michal)
v9:
 - Break LMEM changes into different patch (Michal)
 - Fix layering (Michal)

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://lore.kernel.org/r/20251008214532.3442967-15-matthew.brost@intel.com
 2025-10-09 03:22:34 -07:00
Matthew Brost
c6d00c60c4 drm/xe/vf: Move LMEM config to tile layer 
The LMEM VF provision is tile-layer-specific information. Move the LMEM
configuration to the tile layer accordingly.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://lore.kernel.org/r/20251008214532.3442967-14-matthew.brost@intel.com
 2025-10-09 03:22:31 -07:00
Michal Wajdeczko
eb9b34734c drm/xe/vf: Move tile-related VF functions to separate file 
Some of our VF functions, even if they take a GT pointer, work
only on primary GT and really are tile-related and would be better
to keep them separate from the rest of true GT-oriented functions.
Move them to a file and update to take a tile pointer instead.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Tomasz Lis <tomasz.lis@intel.com>
Reviewed-by: Tomasz Lis <tomasz.lis@intel.com>
Link: https://lore.kernel.org/r/20250602103325.549-3-michal.wajdeczko@intel.com
 2025-06-03 12:35:57 +02:00