From: Jeremy Fitzhardinge <jeremy@goop.org>

Allocate a fixmap slot for use by a paravirt_ops implementation.  Xen uses
this to map the hypervisor's shared info page, which doesn't have a
pseudo-physical page number, and therefore can't be mapped ordinarily.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Zachary Amsden <zach@vmware.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Chris Wright <chrisw@sous-sol.org>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/asm-i386/fixmap.h |    3 +++
 1 file changed, 3 insertions(+)

diff -puN include/asm-i386/fixmap.h~xen-paravirt-paravirt_ops-allocate-a-fixmap-slot include/asm-i386/fixmap.h
--- a/include/asm-i386/fixmap.h~xen-paravirt-paravirt_ops-allocate-a-fixmap-slot
+++ a/include/asm-i386/fixmap.h
@@ -88,6 +88,9 @@ enum fixed_addresses {
 #ifdef CONFIG_PCI_MMCONFIG
 	FIX_PCIE_MCFG,
 #endif
+#ifdef CONFIG_PARAVIRT
+	FIX_PARAVIRT,
+#endif
 	__end_of_permanent_fixed_addresses,
 	/* temporary boot-time mappings, used before ioremap() is functional */
 #define NR_FIX_BTMAPS	16
_