--- vmmon-only/freebsd/hostif.c.orig	Thu Jul 12 22:05:29 2001
+++ vmmon-only/freebsd/hostif.c	Thu Jul 12 22:14:09 2001
@@ -55,7 +55,11 @@
 
 #include <vm/vm.h>
 #include <vm/vm_param.h>
+#if __FreeBSD_version >= 500018
+#include <sys/mutex.h>
+#else
 #include <sys/lock.h>
+#endif
 #include <vm/pmap.h>
 #include <vm/vm_map.h>
 #include <vm/vm_page.h>
@@ -107,7 +111,16 @@
 
 	paddr = (vm_offset_t)addr;
         m = PHYS_TO_VM_PAGE(paddr);
+#if __FreeBSD_version >= 500021
+	GIANT_REQUIRED;
+#elif __FreeBSD_version >= 500013
+	mtx_lock(&vm_mtx);
+#endif
         vm_page_wire(m);
+#if __FreeBSD_version >= 500021
+#elif __FreeBSD_version >= 500013
+	mtx_unlock(&vm_mtx);
+#endif
 	return 0;
 }     
 
@@ -120,7 +133,16 @@
 
 	paddr = (vm_offset_t)addr;
 	m = PHYS_TO_VM_PAGE(paddr);
+#if __FreeBSD_version >= 500021
+	GIANT_REQUIRED;
+#elif __FreeBSD_version >= 500013
+	mtx_lock(&vm_mtx);
+#endif
 	vm_page_unwire(m, 1);
+#if __FreeBSD_version >= 500021
+#elif __FreeBSD_version >= 500013
+	mtx_unlock(&vm_mtx);
+#endif
   	return 0;
 }
  
@@ -1066,10 +1088,19 @@
         return NULL;
   }
   paddr = vtophys(addr);
+#if __FreeBSD_version >= 500021
+	GIANT_REQUIRED;
+#elif __FreeBSD_version >= 500013
+  mtx_lock(&vm_mtx);
+#endif
   ka->kaddr = kmem_alloc_pageable(kernel_map, PAGE_SIZE);
   ka->map = PHYS_TO_VM_PAGE(paddr);
   vm_page_wire(ka->map); 
   pmap_kenter(ka->kaddr, paddr);	
+#if __FreeBSD_version >= 500021
+#elif __FreeBSD_version >= 500013
+  mtx_unlock(&vm_mtx);
+#endif
   return ka->kaddr;
 }
 
@@ -1079,9 +1110,18 @@
   if (ka->map==NULL)
 	  return 0;
 
+#if __FreeBSD_version >= 500021
+  GIANT_REQUIRED;
+#elif __FreeBSD_version >= 500013
+  mtx_lock(&vm_mtx);
+#endif
   vm_page_unwire(ka->map, 1); 
   pmap_kremove(ka->kaddr);	
   kmem_free(kernel_map, ka->kaddr, PAGE_SIZE);
+#if __FreeBSD_version >= 500021
+#elif __FreeBSD_version >= 500013
+  mtx_unlock(&vm_mtx);
+#endif
   ka->kaddr = 0;
   ka->map = NULL;
   return 0;