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authorMatt Fleming <matt.fleming@intel.com>2012-11-20 13:07:46 +0000
committerMatt Fleming <matt.fleming@intel.com>2012-11-20 20:52:07 +0000
commit0f905a43ce955b638139bd84486194770a6a2c08 (patch)
tree21756a91c7a08a6aec779926a4c38781071b8d3e /arch/x86
parentcaaa8c6339ccefee6e834c4a8b0bec7e721e7357 (diff)
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>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/boot/compressed/eboot.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/boot/compressed/eboot.c b/arch/x86/boot/compressed/eboot.c
index c760e073963e..e87b0cac14b5 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;