From 82c383e89e38b96bf21be9f68acec0617e93c702 Mon Sep 17 00:00:00 2001
From: Keir Fraser <keir.fraser@citrix.com>
Date: Mon, 27 Oct 2008 13:26:50 +0000
Subject: [PATCH] x86: First fixmap entry (0) is invalid. Signed-off-by: Jan
 Beulich <jbeulich@novell.com> Signed-off-by: Keir Fraser
 <keir.fraser@citrix.com>

---
 xen/include/asm-x86/fixmap.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/xen/include/asm-x86/fixmap.h b/xen/include/asm-x86/fixmap.h
index 4917336a71..07afbc254d 100644
--- a/xen/include/asm-x86/fixmap.h
+++ b/xen/include/asm-x86/fixmap.h
@@ -29,6 +29,7 @@
  * from the end of virtual memory backwards.
  */
 enum fixed_addresses {
+    FIX_RESERVED, /* Index 0 is reserved since fix_to_virt(0) > FIXADDR_TOP. */
 #ifdef __i386__
     FIX_PAE_HIGHMEM_0,
     FIX_PAE_HIGHMEM_END = FIX_PAE_HIGHMEM_0 + NR_CPUS-1,
-- 
2.30.2