diff -urN 2.4.3aa/arch/i386/config.in 2.4.3aa-virtual/arch/i386/config.in
--- 2.4.3aa/arch/i386/config.in	Fri Feb  9 17:34:03 2001
+++ 2.4.3aa-virtual/arch/i386/config.in	Sun Apr  1 11:58:08 2001
@@ -151,6 +151,9 @@
    define_bool CONFIG_HIGHMEM y
    define_bool CONFIG_X86_PAE y
 fi
+if [ "$CONFIG_NOHIGHMEM" = "y" ]; then
+   define_bool CONFIG_NO_PAGE_VIRTUAL y
+fi
 
 bool 'Math emulation' CONFIG_MATH_EMULATION
 bool 'MTRR (Memory Type Range Register) support' CONFIG_MTRR
diff -urN 2.4.3aa/include/asm-i386/pgtable.h 2.4.3aa-virtual/include/asm-i386/pgtable.h
--- 2.4.3aa/include/asm-i386/pgtable.h	Sun Apr  1 11:42:51 2001
+++ 2.4.3aa-virtual/include/asm-i386/pgtable.h	Sun Apr  1 11:58:08 2001
@@ -255,7 +255,11 @@
  * Permanent address of a page. Obviously must never be
  * called on a highmem page.
  */
+#ifdef CONFIG_NO_PAGE_VIRTUAL
+#define page_address(page) __va((page - mem_map) << PAGE_SHIFT)
+#else
 #define page_address(page) ((page)->virtual)
+#endif
 #define pages_to_mb(x) ((x) >> (20-PAGE_SHIFT))
 
 /*
diff -urN 2.4.3aa/include/linux/mm.h 2.4.3aa-virtual/include/linux/mm.h
--- 2.4.3aa/include/linux/mm.h	Sun Apr  1 11:52:10 2001
+++ 2.4.3aa-virtual/include/linux/mm.h	Sun Apr  1 11:58:08 2001
@@ -143,7 +143,9 @@
 	wait_queue_head_t wait;
 	struct page **pprev_hash;
 	struct buffer_head * buffers;
+#ifndef CONFIG_NO_PAGE_VIRTUAL
 	void *virtual; /* non-NULL if kmapped */
+#endif
 	struct zone_struct *zone;
 } mem_map_t;
 
diff -urN 2.4.3aa/mm/page_alloc.c 2.4.3aa-virtual/mm/page_alloc.c
--- 2.4.3aa/mm/page_alloc.c	Sun Apr  1 11:52:10 2001
+++ 2.4.3aa-virtual/mm/page_alloc.c	Sun Apr  1 11:58:44 2001
@@ -850,8 +850,10 @@
 		for (i = 0; i < size; i++) {
 			struct page *page = mem_map + offset + i;
 			page->zone = zone;
+#ifndef CONFIG_NO_PAGE_VIRTUAL
 			if (j != ZONE_HIGHMEM)
 				page->virtual = __va(zone_start_paddr);
+#endif
 			zone_start_paddr += PAGE_SIZE;
 		}