diff options
| author | Andi Kleen <ak@suse.de> | 2005-01-11 01:50:25 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-01-11 01:50:25 -0800 |
| commit | f9e78f69a9e7649b668545aa4ee91559e01e571a (patch) | |
| tree | e7a66bec16011d84c9cf1de2dafe116cb616882d /arch | |
| parent | 62672609abaa73d6c47796ccc6033ce04b55d935 (diff) | |
| download | history-f9e78f69a9e7649b668545aa4ee91559e01e571a.tar.gz | |
[PATCH] x86_64: Prevent gcc from generating MMX code by mistake.
This will help only on gcc 4+. On older gccs there is a workaround too, but
it is so ugly and there are no actual observed failures that I didn't apply
it.
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: <rth@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86_64/Makefile | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile index a69f7bcdfc2cdf..6f90c246c41899 100644 --- a/arch/x86_64/Makefile +++ b/arch/x86_64/Makefile @@ -59,6 +59,8 @@ endif # -funit-at-a-time shrinks the kernel .text considerably # unfortunately it makes reading oopses harder. CFLAGS += $(call cc-option,-funit-at-a-time) +# prevent gcc from generating any FP code by mistake +CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,) head-y := arch/x86_64/kernel/head.o arch/x86_64/kernel/head64.o arch/x86_64/kernel/init_task.o |