[PATCH v7 19/32] drm/xe/vf: Reset TLB invalidations during VF post migration recovery

[Matthew Brost <matthew.brost@intel.com>]

TLB invalidations requests can be lost during VF post-migration
recovery. Since the VF has migrated, these invalidations are no longer
needed.

Reset the TLB invalidation frontend, which will signal all pending
fences.

v3:
 - Move TLB invalidation reset after pausing submission (Tomasz)
 - Adjust commit message (Michal)

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Tomasz Lis <tomasz.lis@intel.com>
---
 drivers/gpu/drm/xe/xe_gt_sriov_vf.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_gt_sriov_vf.c b/drivers/gpu/drm/xe/xe_gt_sriov_vf.c
index 6856973cab9a..d5819cac1bc9 100644
--- a/drivers/gpu/drm/xe/xe_gt_sriov_vf.c
+++ b/drivers/gpu/drm/xe/xe_gt_sriov_vf.c
@@ -35,6 +35,7 @@
 #include "xe_sriov.h"
 #include "xe_sriov_vf.h"
 #include "xe_tile_sriov_vf.h"
+#include "xe_tlb_inval.h"
 #include "xe_uc_fw.h"
 #include "xe_wopcm.h"
 
@@ -1102,6 +1103,7 @@ static void vf_post_migration_shutdown(struct xe_gt *gt)
 
 	xe_guc_ct_flush_and_stop(&gt->uc.guc.ct);
 	xe_guc_submit_pause(&gt->uc.guc);
+	xe_tlb_inval_reset(&gt->tlb_inval);
 }
 
 static size_t post_migration_scratch_size(struct xe_device *xe)
-- 
2.34.1