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-rw-r--r--sys/amd64/include/vm.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/amd64/include/vm.h b/sys/amd64/include/vm.h
index 2e9c30da9936..fef7a53ca317 100644
--- a/sys/amd64/include/vm.h
+++ b/sys/amd64/include/vm.h
@@ -43,5 +43,6 @@
#define VM_MEMATTR_WEAK_UNCACHEABLE ((vm_memattr_t)PAT_UNCACHED)
#define VM_MEMATTR_DEFAULT VM_MEMATTR_WRITE_BACK
+#define VM_MEMATTR_DEVICE VM_MEMATTR_UNCACHEABLE
#endif /* !_MACHINE_VM_H_ */