Commit-ID: 7ed5ee279499a02bf35c77f0a91d657c24f6474e Gitweb: http://git.kernel.org/tip/7ed5ee279499a02bf35c77f0a91d657c24f6474e Author: H. Peter Anvin <[email protected]> AuthorDate: Thu, 6 Mar 2014 09:47:20 -0800 Committer: H. Peter Anvin <[email protected]> CommitDate: Thu, 6 Mar 2014 09:47:20 -0800
x86, vdso32: Disable stack protector, adjust optimizations For the 32-bit VDSO, match the 64-bit VDSO in: 1. Disable the stack protector. 2. Use -fno-omit-frame-pointer for user space debugging sanity. 3. Use -foptimize-sibling-calls like the 64-bit VDSO does. Reported-by: Ingo Molnar <[email protected]> Cc: Stefani Seibold <[email protected]> Cc: Andy Lutomirski <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: H. Peter Anvin <[email protected]> --- arch/x86/vdso/Makefile | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile index 6cef7a1..55e76eb 100644 --- a/arch/x86/vdso/Makefile +++ b/arch/x86/vdso/Makefile @@ -151,6 +151,9 @@ KBUILD_CFLAGS_32 := $(filter-out -mcmodel=kernel,$(KBUILD_CFLAGS_32)) KBUILD_CFLAGS_32 := $(filter-out -fno-pic,$(KBUILD_CFLAGS_32)) KBUILD_CFLAGS_32 := $(filter-out -mfentry,$(KBUILD_CFLAGS_32)) KBUILD_CFLAGS_32 += -m32 -msoft-float -mregparm=0 -fpic +KBUILD_CFLAGS_32 += $(call cc-option, -fno-stack-protector) +KBUILD_CFLAGS_32 += $(call cc-option, -foptimize-sibling-calls) +KBUILD_CFLAGS_32 += -fno-omit-frame-pointer $(vdso32-images:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32) $(vdso32-images:%=$(obj)/%.dbg): $(obj)/vdso32-%.so.dbg: FORCE \ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
