[RFC 24/29] drm/xe/svm: Support DRM_XE_SVM_ATTR_PAT memory attribute

[Himal Prasad Ghimiray]

This attributes sets the pat_index for the svm used vma range, which is
utilized to ascertain the coherence.

Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray at intel.com>
---
 drivers/gpu/drm/xe/xe_vm_madvise.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_vm_madvise.c b/drivers/gpu/drm/xe/xe_vm_madvise.c
index f870e8642190..f4e0545937b0 100644
--- a/drivers/gpu/drm/xe/xe_vm_madvise.c
+++ b/drivers/gpu/drm/xe/xe_vm_madvise.c
@@ -104,7 +104,14 @@ static int madvise_pat_index(struct xe_device *xe, struct xe_vm *vm,
 			     struct xe_vma **vmas, int num_vmas,
 			     struct drm_xe_madvise_ops ops)
 {
-	/* Implementation pending */
+	int i;
+
+	xe_assert(vm->xe, ops.type == DRM_XE_VMA_ATTR_PAT);
+	vm_dbg(&xe->drm, "attr_value = %d", ops.pat_index.val);
+
+	for (i = 0; i < num_vmas; i++)
+		vmas[i]->attr.pat_index = ops.pat_index.val;
+
 	return 0;
 }
 
-- 
2.34.1