[IA64] kexec: define EFI offsets for identity mapping

This is used by paches that move the EFI runtime regions into what is
normally guest space.  A description of why this mapping is made is
included in the patch that makes the mapping.

Cc: Tristan Gingold <tgingold@free.fr>
Cc: Isaku Yamahata <yamahata@valinux.co.jp>
Cc: Alex Williamson <alex.williamson@hp.com>
Cc: Aron Griffis <aron@hp.com>
Signed-off-by: Simon Horman <horms@verge.net.au>

diff --git a/xen/include/asm-ia64/xensystem.h b/xen/include/asm-ia64/xensystem.h
index b40635b409a44578bde1f730f2ba8412af22e554..3e49f8ae630a9d53232f86784fe75374683d02b0 100644 (file)
--- a/xen/include/asm-ia64/xensystem.h
+++ b/xen/include/asm-ia64/xensystem.h
@@ -33,6 +33,12 @@
 #define KERNEL_START            0xf400000004000000
 #define GATE_ADDR               KERNEL_START
 
+/* In order for Kexec between Xen and Linux to work EFI needs
+ * to be mapped into the same place by both. It seems most convenient
+ * to make Xen do the dirty work here */
+#define __IA64_EFI_UNCACHED_OFFSET     0xc000000000000000UL
+#define __IA64_EFI_CACHED_OFFSET       0xe000000000000000UL
+
 #define IS_VMM_ADDRESS(addr) ((((addr) >> 60) ^ ((addr) >> 59)) & 1)
 
 #endif // _ASM_IA64_XENSYSTEM_H