Commit-ID: 008cc907de327d83a0be609cd495fccb0e5dfa4c Gitweb: http://git.kernel.org/tip/008cc907de327d83a0be609cd495fccb0e5dfa4c Author: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> AuthorDate: Mon, 17 Mar 2014 23:22:12 +0100 Committer: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> CommitDate: Tue, 18 Mar 2014 12:52:48 -0700 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 <mingo@xxxxxxxxxx> Signed-off-by: Stefani Seibold <stefani@xxxxxxxxxxx> Link: http://lkml.kernel.org/r/1395094933-14252-13-git-send-email-stefani@xxxxxxxxxxx Signed-off-by: H. Peter Anvin <hpa@xxxxxxxxxxxxxxx> --- arch/x86/vdso/Makefile | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile index 6cef7a1..a2de5fc 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-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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