Commit-ID: 14262d67fe348018af368a07430fbc06eadeabb1
Gitweb: http://git.kernel.org/tip/14262d67fe348018af368a07430fbc06eadeabb1
Author: George Spelvin <linux@xxxxxxxxxxx>
AuthorDate: Wed, 7 May 2014 17:05:52 -0400
Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
CommitDate: Wed, 7 May 2014 14:14:44 -0700
x86-64, build: Fix stack protector Makefile breakage with 32-bit userland
If you are using a 64-bit kernel with 32-bit userland, then
scripts/gcc-x86_64-has-stack-protector.sh invokes 32-bit gcc
with -mcmodel=kernel, which produces:
<stdin>:1:0: error: code model 'kernel' not supported in the 32 bit mode
and trips the "broken compiler" test at arch/x86/Makefile:120.
There are several places a fix is possible, but the following seems
cleanest. (But it's minimal; it would also be possible to factor
out a bunch of stuff from the two branches of the if.)
Signed-off-by: George Spelvin <linux@xxxxxxxxxxx>
Link: http://lkml.kernel.org/r/20140507210552.7581.qmail@xxxxxxxxxxxxxx
Cc: <stable@xxxxxxxxxxxxxxx> # v3.14
Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx>
---
arch/x86/Makefile | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index ce6ad7e..33f71b0 100644
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -79,6 +79,7 @@ else
UTS_MACHINE := x86_64
CHECKFLAGS += -D__x86_64__ -m64
+ biarch := -m64
KBUILD_AFLAGS += -m64
KBUILD_CFLAGS += -m64
--
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