[PATCH 1/3] drm/xe: Disable compression on SVM

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

This is not yet supported, forcefully disable by setting pat_index to
zero for CPU address mirror VMAs.

Cc: stable@vger.kernel.org
Fixes: b43e864af0d4 ("drm/xe/uapi: Add DRM_XE_VM_BIND_FLAG_CPU_ADDR_MIRROR")
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
---
 drivers/gpu/drm/xe/xe_vm.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c
index 2035604121e6..73cb981c0956 100644
--- a/drivers/gpu/drm/xe/xe_vm.c
+++ b/drivers/gpu/drm/xe/xe_vm.c
@@ -2362,7 +2362,10 @@ vm_bind_ioctl_ops_create(struct xe_vm *vm, struct xe_vma_ops *vops,
 			op->map.is_cpu_addr_mirror = flags &
 				DRM_XE_VM_BIND_FLAG_CPU_ADDR_MIRROR;
 			op->map.dumpable = flags & DRM_XE_VM_BIND_FLAG_DUMPABLE;
-			op->map.pat_index = pat_index;
+			if (op->map.is_cpu_addr_mirror)
+				op->map.pat_index = 0;
+			else
+				op->map.pat_index = pat_index;
 			op->map.invalidate_on_bind =
 				__xe_vm_needs_clear_scratch_pages(vm, flags);
 		} else if (__op->op == DRM_GPUVA_OP_PREFETCH) {
-- 
2.34.1