Messages in this thread Patch in this message | | | Date | Mon, 31 Mar 2014 14:36:09 +0200 | From | Ingo Molnar <> | Subject | [GIT PULL] x86/build change for v3.15 |
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Linus,
Please pull the latest x86-build-for-linus git tree from:
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86-build-for-linus
# HEAD: b399fe355b30d0102e7690c99e6f764ddfd32ec3 x86: Disable generation of traditional x87 instructions
Explicitly disable x87 FPU instructions, to catch mistaken floating point use at build time, instead of crashing or misbehaving during run time.
Thanks,
Ingo
------------------> Borislav Petkov (1): x86: Disable generation of traditional x87 instructions
arch/x86/Makefile | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/Makefile b/arch/x86/Makefile index eeda43a..a414b14 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -82,8 +82,8 @@ else KBUILD_AFLAGS += -m64 KBUILD_CFLAGS += -m64 - # Don't autogenerate MMX or SSE instructions - KBUILD_CFLAGS += -mno-mmx -mno-sse + # Don't autogenerate traditional x87, MMX or SSE instructions + KBUILD_CFLAGS += -mno-mmx -mno-sse -mno-80387 -mno-fp-ret-in-387 # Use -mpreferred-stack-boundary=3 if supported. KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=3)
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