diff -urN sys.orig/kern/kern_malloc.c sys/kern/kern_malloc.c
--- sys.orig/kern/kern_malloc.c	2008-06-08 15:47:14.000000000 +0800
+++ sys/kern/kern_malloc.c	2008-06-08 15:45:40.000000000 +0800
@@ -174,16 +174,16 @@
  */
 static uma_zone_t mt_zone;
 
-u_int vm_kmem_size;
-SYSCTL_UINT(_vm, OID_AUTO, kmem_size, CTLFLAG_RD, &vm_kmem_size, 0,
+u_long vm_kmem_size;
+SYSCTL_ULONG(_vm, OID_AUTO, kmem_size, CTLFLAG_RD, &vm_kmem_size, 0,
     "Size of kernel memory");
 
-u_int vm_kmem_size_min;
-SYSCTL_UINT(_vm, OID_AUTO, kmem_size_min, CTLFLAG_RD, &vm_kmem_size_min, 0,
+u_long vm_kmem_size_min;
+SYSCTL_ULONG(_vm, OID_AUTO, kmem_size_min, CTLFLAG_RD, &vm_kmem_size_min, 0,
     "Minimum size of kernel memory");
 
-u_int vm_kmem_size_max;
-SYSCTL_UINT(_vm, OID_AUTO, kmem_size_max, CTLFLAG_RD, &vm_kmem_size_max, 0,
+u_long vm_kmem_size_max;
+SYSCTL_ULONG(_vm, OID_AUTO, kmem_size_max, CTLFLAG_RD, &vm_kmem_size_max, 0,
     "Maximum size of kernel memory");
 
 u_int vm_kmem_size_scale;
@@ -560,7 +560,7 @@
 #if defined(VM_KMEM_SIZE_MIN)
 	vm_kmem_size_min = VM_KMEM_SIZE_MIN;
 #endif
-	TUNABLE_INT_FETCH("vm.kmem_size_min", &vm_kmem_size_min);
+	TUNABLE_ULONG_FETCH("vm.kmem_size_min", &vm_kmem_size_min);
 	if (vm_kmem_size_min > 0 && vm_kmem_size < vm_kmem_size_min) {
 		vm_kmem_size = vm_kmem_size_min;
 	}
@@ -568,16 +568,16 @@
 #if defined(VM_KMEM_SIZE_MAX)
 	vm_kmem_size_max = VM_KMEM_SIZE_MAX;
 #endif
-	TUNABLE_INT_FETCH("vm.kmem_size_max", &vm_kmem_size_max);
+	TUNABLE_ULONG_FETCH("vm.kmem_size_max", &vm_kmem_size_max);
 	if (vm_kmem_size_max > 0 && vm_kmem_size >= vm_kmem_size_max)
 		vm_kmem_size = vm_kmem_size_max;
 
 	/* Allow final override from the kernel environment */
 #ifndef BURN_BRIDGES
-	if (TUNABLE_INT_FETCH("kern.vm.kmem.size", &vm_kmem_size) != 0)
+	if (TUNABLE_ULONG_FETCH("kern.vm.kmem.size", &vm_kmem_size) != 0)
 		printf("kern.vm.kmem.size is now called vm.kmem_size!\n");
 #endif
-	TUNABLE_INT_FETCH("vm.kmem_size", &vm_kmem_size);
+	TUNABLE_ULONG_FETCH("vm.kmem_size", &vm_kmem_size);
 
 	/*
 	 * Limit kmem virtual size to twice the physical memory.
diff -urN sys.orig/vm/vm_kern.h sys/vm/vm_kern.h
--- sys.orig/vm/vm_kern.h	2008-06-08 15:49:09.000000000 +0800
+++ sys/vm/vm_kern.h	2008-06-08 15:45:58.000000000 +0800
@@ -69,6 +69,6 @@
 extern vm_map_t kmem_map;
 extern vm_map_t exec_map;
 extern vm_map_t pipe_map;
-extern u_int vm_kmem_size;
+extern u_long vm_kmem_size;
 
 #endif				/* _VM_VM_KERN_H_ */