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authorAndi Kleen <ak@suse.de>2006-04-22 02:35:57 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-04-22 09:19:52 -0700
commitddbe3eec596fc2c6a513717168217bd19c901880 (patch)
tree0c9d2222d43480d19753596d7a5cf6e6e858b7fa
parent304dbdb7a4fbb7f40a6ad5c5836fdd456c233c63 (diff)
downloadop-kernel-dev-ddbe3eec596fc2c6a513717168217bd19c901880.zip
op-kernel-dev-ddbe3eec596fc2c6a513717168217bd19c901880.tar.gz
[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 <david.altobelli@hp.com> and Brian Baker <Brian.B@hp.com> for test case and initial analysis. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--arch/x86_64/ia32/Makefile4
1 files changed, 2 insertions, 2 deletions
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
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