--- a/kernel-dkms/nvidia-uvm/uvm_migrate_pageable.c	2021-10-22 08:48:04.000000000 +0200
+++ b/kernel-dkms/nvidia-uvm/uvm_migrate_pageable_b.c	2021-11-29 17:50:22.467621809 +0100
@@ -336,6 +336,10 @@
     return dst_page;
 }

+#ifndef MIGRATE_PFN_LOCKED
+#define MIGRATE_PFN_LOCKED	0
+#endif
+
 static NV_STATUS migrate_vma_populate_anon_pages(struct vm_area_struct *vma,
                                                  unsigned long *dst,
                                                  unsigned long start,