[PATCH] drm/xe: Only zap PTEs as needed

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

If PTEs are already invalidated no need to invalidate again.

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
---
 drivers/gpu/drm/xe/xe_pt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_pt.c b/drivers/gpu/drm/xe/xe_pt.c
index 7f792b7feb06..d8817673c097 100644
--- a/drivers/gpu/drm/xe/xe_pt.c
+++ b/drivers/gpu/drm/xe/xe_pt.c
@@ -815,8 +815,9 @@ bool xe_pt_zap_ptes(struct xe_tile *tile, struct xe_vma *vma)
 		.tile = tile,
 	};
 	struct xe_pt *pt = xe_vma_vm(vma)->pt_root[tile->id];
+	u8 pt_mask = (vma->tile_present & ~vma->tile_invalidated);
 
-	if (!(vma->tile_present & BIT(tile->id)))
+	if (!(pt_mask & BIT(tile->id)))
 		return false;
 
 	(void)xe_pt_walk_shared(&pt->base, pt->level, xe_vma_start(vma),
-- 
2.34.1