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-rw-r--r--cpu-common.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/cpu-common.h b/cpu-common.h
index 7c9cef85b3..48f4c01a3f 100644
--- a/cpu-common.h
+++ b/cpu-common.h
@@ -172,6 +172,7 @@ void cpu_physical_memory_write_rom(target_phys_addr_t addr,
 #define IO_MEM_ROM         (1 << IO_MEM_SHIFT) /* hardcoded offset */
 #define IO_MEM_UNASSIGNED  (2 << IO_MEM_SHIFT)
 #define IO_MEM_NOTDIRTY    (3 << IO_MEM_SHIFT)
+#define IO_MEM_SUBPAGE_RAM (4 << IO_MEM_SHIFT)
 
 /* Acts like a ROM when read and like a device when written.  */
 #define IO_MEM_ROMD        (1)