Reserve a new fixmap slot for paravirt backends.  Xen uses this for
mapping the hypervisor shared-info page, which doesn't really exist in
the guest address space.

Signed-off-by: Jeremy Fitzhardinge <redacted>
Cc: Chris Wright <redacted>
Cc: Zachary Amsden <redacted>
Cc: Andi Kleen <redacted>
Cc: Andrew Morton <redacted>
Cc: Rusty Russell <redacted>

===================================================================

--- a/include/asm-i386/fixmap.h
+++ b/include/asm-i386/fixmap.h

@@ -86,6 +86,9 @@ 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

--