1 files changed, 2 insertions, 0 deletions
diff --git a/linux/vm.c b/linux/vm.c
index d295529b..907c44cf 100644
--- a/linux/vm.c
+++ b/linux/vm.c
@@ -323,6 +323,8 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
 				pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
 				pgprot_val(vma->vm_page_prot) &= ~_PAGE_PWT;
 			}
+#elif defined(__powerpc__)
+			pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE|_PAGE_GUARDED;
 #endif
 			vma->vm_flags |= VM_IO;	/* not in core dump */
 		}