diff --git a/qemu/target/i386/cpu.h b/qemu/target/i386/cpu.h
index 8af82c14..dc2b62ab 100644
--- a/qemu/target/i386/cpu.h
+++ b/qemu/target/i386/cpu.h
@@ -1373,6 +1373,9 @@ typedef struct X86CPU {
     /* if true override the phys_bits value with a value read from the host */
     bool host_phys_bits;
 
+    /* if set, limit maximum value for phys_bits when host_phys_bits is true */
+    uint8_t host_phys_bits_limit;
+
     /* Number of physical address bits supported */
     uint32_t phys_bits;