[x86] efi: Fix processor-specific memcpy() build error (Closes: #698581)

svn path=/dists/sid/linux/; revision=19902

debian/changelog

@@ -15,6 +15,7 @@ linux (3.2.39-3) UNRELEASED; urgency=low
   * test-patches: Clean up all previous test patches, whether or not they
     were applied
   * test-patches: Add --fuzz option to allow testing patches that have fuzz
+  * [x86] efi: Fix processor-specific memcpy() build error (Closes: #698581)
 
  -- Ben Hutchings <ben@decadent.org.uk>  Wed, 27 Feb 2013 03:48:30 +0000
 

debian/patches/features/x86/efi-stub/0019-x86-efi-Fix-processor-specific-memcpy-build-error.patch

@@ -0,0 +1,41 @@
+From 0f905a43ce955b638139bd84486194770a6a2c08 Mon Sep 17 00:00:00 2001
+From: Matt Fleming <matt.fleming@intel.com>
+Date: Tue, 20 Nov 2012 13:07:46 +0000
+Subject: [PATCH] x86, efi: Fix processor-specific memcpy() build error
+
+Building for Athlon/Duron/K7 results in the following build error,
+
+arch/x86/boot/compressed/eboot.o: In function `__constant_memcpy3d':
+eboot.c:(.text+0x385): undefined reference to `_mmx_memcpy'
+arch/x86/boot/compressed/eboot.o: In function `efi_main':
+eboot.c:(.text+0x1a22): undefined reference to `_mmx_memcpy'
+
+because the boot stub code doesn't link with the kernel proper, and
+therefore doesn't have access to the 3DNow version of memcpy. So,
+follow the example of misc.c and #undef memcpy so that we use the
+version provided by misc.c.
+
+See https://bugzilla.kernel.org/show_bug.cgi?id=50391
+
+Reported-by: Al Viro <viro@zeniv.linux.org.uk>
+Reported-by: Ryan Underwood <nemesis@icequake.net>
+Cc: H. Peter Anvin <hpa@zytor.com>
+Cc: stable@vger.kernel.org
+Signed-off-by: Matt Fleming <matt.fleming@intel.com>
+---
+ arch/x86/boot/compressed/eboot.c |    2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
+index c760e07..e87b0ca 100644
+--- a/arch/x86/boot/compressed/eboot.c
++++ b/arch/x86/boot/compressed/eboot.c
+@@ -12,6 +12,8 @@
+ #include <asm/setup.h>
+ #include <asm/desc.h>
+ 
++#undef memcpy			/* Use memcpy from misc.c */
++
+ #include "eboot.h"
+ 
+ static efi_system_table_t *sys_table;

debian/patches/series

@@ -631,3 +631,4 @@ bugfix/all/mm-fix-pageblock-bitmap-allocation.patch
 bugfix/all/USB-usb-storage-unusual_devs-update-for-Super-TOP-SA.patch
 debian/x86-efi-avoid-abi-change-in-3.2.38.patch
 bugfix/all/vhost-fix-length-for-cross-region-descriptor.patch
+features/x86/efi-stub/0019-x86-efi-Fix-processor-specific-memcpy-build-error.patch