Index: lib/libvmmapi/vmmapi.c
===================================================================
--- lib/libvmmapi/vmmapi.c
+++ lib/libvmmapi/vmmapi.c
@@ -362,7 +362,7 @@
 	size_t objsize, len;
 	vm_paddr_t gpa;
 	char *baseaddr, *ptr;
-	int error, flags;
+	int error;
 
 	assert(vms == VM_MMAP_ALL);
 
@@ -389,12 +389,12 @@
 	 * and the adjoining guard regions.
 	 */
 	len = VM_MMAP_GUARD_SIZE + objsize + VM_MMAP_GUARD_SIZE;
-	flags = MAP_PRIVATE | MAP_ANON | MAP_NOCORE | MAP_ALIGNED_SUPER;
-	ptr = mmap(NULL, len, PROT_NONE, flags, -1, 0);
+	ptr = mmap(NULL, len, PROT_NONE, MAP_GUARD | MAP_ALIGNED_SUPER,
+	    -1, 0);
 	if (ptr == MAP_FAILED)
 		return (-1);
-
 	baseaddr = ptr + VM_MMAP_GUARD_SIZE;
+
 	if (ctx->highmem > 0) {
 		gpa = 4*GB;
 		len = ctx->highmem;
@@ -492,8 +492,8 @@
 	 * adjoining guard regions.
 	 */
 	len2 = VM_MMAP_GUARD_SIZE + len + VM_MMAP_GUARD_SIZE;
-	flags = MAP_PRIVATE | MAP_ANON | MAP_NOCORE | MAP_ALIGNED_SUPER;
-	base = mmap(NULL, len2, PROT_NONE, flags, -1, 0);
+	base = mmap(NULL, len2, PROT_NONE, MAP_GUARD |
+	    MAP_ALIGNED_SUPER, -1, 0);
 	if (base == MAP_FAILED)
 		goto done;