copy of beng's working copy

include/minix/com.h

@@ -603,6 +603,11 @@
 #define VMCTL_MEMREQ_REPLY	15
 #define VMCTL_INCSP		16
 #define VMCTL_NOPAGEZERO	18
+#define VMCTL_I386_KERNELLIMIT	19
+#define VMCTL_I386_PAGEDIRS	20
+#define VMCTL_I386_PDE		21
+#define VMCTL_I386_PDEVAL	22
+#define VMCTL_I386_FREEPDE	23
 
 /*===========================================================================*
  *                Messages for the Reincarnation Server 		     *

include/minix/config.h

@@ -96,6 +96,6 @@
 #define CPROFILE          0    /* call profiling */
 
 /* Compile kernel so that first page of code and data can be unmapped. */
-#define VM_KERN_NOPAGEZERO      1       
+#define VM_KERN_NOPAGEZERO      0
 
 #endif /* _CONFIG_H */

include/sys/vm_i386.h

@@ -14,6 +14,7 @@ sys/vm_i386.h
 #define I386_VM_ACC	0x020	/* Accessed */
 #define I386_VM_ADDR_MASK 0xFFFFF000 /* physical address */
 #define I386_VM_ADDR_MASK_4MB 0xFFC00000 /* physical address */
+#define I386_VM_OFFSET_MASK_4MB 0x003FFFFF /* physical address */
 
 /* Page directory specific flags. */
 #define I386_VM_BIGPAGE	0x080	/* 4MB page */