4MB mask

diff --git a/include/sys/vm_i386.h b/include/sys/vm_i386.h
index 8932dffb35d46d1b24fa78f0edb15e4ee1379425..7fd137ffdee519871c0e98cf5b44dcbc5b68865f 100644 (file)
--- a/include/sys/vm_i386.h
+++ b/include/sys/vm_i386.h
@@ -13,6 +13,7 @@ sys/vm_i386.h
 #define I386_VM_PCD    0x010   /* Cache disable */
 #define I386_VM_ACC    0x020   /* Accessed */
 #define I386_VM_ADDR_MASK 0xFFFFF000 /* physical address */
+#define I386_VM_ADDR_MASK_4MB 0xFFC00000 /* physical address */
 
 /* Page directory specific flags. */
 #define I386_VM_BIGPAGE        0x080   /* 4MB page */