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-rw-r--r--target-s390x/cpu.h5
1 files changed, 4 insertions, 1 deletions
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index 0ce82cf830..6304c4d90b 100644
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -34,7 +34,10 @@
#include "exec/cpu-defs.h"
#define TARGET_PAGE_BITS 12
-#define TARGET_PHYS_ADDR_SPACE_BITS 64
+/* Actually 64-bits, limited by the memory API to 62 bits. We
+ * never use that much.
+ */
+#define TARGET_PHYS_ADDR_SPACE_BITS 62
#define TARGET_VIRT_ADDR_SPACE_BITS 64
#include "exec/cpu-all.h"