From: Andi Kleen Date: Sat, 22 Apr 2006 09:35:57 +0000 (-0700) Subject: [PATCH] x86_64: Pass -32 to the assembler when compiling the 32bit vsyscall pages X-Git-Tag: upstream/snapshot3+hdmi~40707 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ddbe3eec596fc2c6a513717168217bd19c901880;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git [PATCH] x86_64: Pass -32 to the assembler when compiling the 32bit vsyscall pages This quietens warnings and actually fixes a bug. The unwind tables would come out wrong without -32, causing pthread cancellation during them to crash in the gcc runtime. The problem seems to only happen with newer binutils (it doesn't happen with 2.16.91.0.2 but happens wit 2.16.91.0.5) Thanks to David Altobelli and Brian Baker for test case and initial analysis. Signed-off-by: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/arch/x86_64/ia32/Makefile b/arch/x86_64/ia32/Makefile index 929e6b0..e9263b4 100644 --- a/arch/x86_64/ia32/Makefile +++ b/arch/x86_64/ia32/Makefile @@ -27,5 +27,5 @@ $(obj)/vsyscall-sysenter.so $(obj)/vsyscall-syscall.so: \ $(obj)/vsyscall-%.so: $(src)/vsyscall.lds $(obj)/vsyscall-%.o FORCE $(call if_changed,syscall) -AFLAGS_vsyscall-sysenter.o = -m32 -AFLAGS_vsyscall-syscall.o = -m32 +AFLAGS_vsyscall-sysenter.o = -m32 -Wa,-32 +AFLAGS_vsyscall-syscall.o = -m32 -Wa,-32