From: Isaku Yamahata <yamahata@valinux.co.jp>
Date: Tue, 22 Jul 2008 03:15:02 +0000 (+0900)
Subject: [IA64] kexec: define EFI offsets for identity mapping
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14186
X-Git-Url: https://dgit.raspbian.org/%22http://www.example.com/cgi/success//%22http:/www.example.com/cgi/success/?a=commitdiff_plain;h=3d0a63cd7e991b764829b7dfdd9aef88785f29cf;p=xen.git

[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 b40635b409..3e49f8ae63 100644
--- 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