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-rw-r--r--include/linux/mm.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 3d617d0d6967..830b925c2d00 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -95,6 +95,10 @@ extern const int mmap_rnd_compat_bits_max;
extern int mmap_rnd_compat_bits __read_mostly;
#endif
+#ifndef PHYSMEM_END
+# define PHYSMEM_END ((1ULL << MAX_PHYSMEM_BITS) - 1)
+#endif
+
#include <asm/page.h>
#include <asm/processor.h>