Contents of /trunk/kernel26-magellan/patches-2.6.16-r10/0104-2.6.16.12-m32-syscall.patch
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Thu May 11 19:09:22 2006 UTC (18 years ago) by niro
File size: 1237 byte(s)
Thu May 11 19:09:22 2006 UTC (18 years ago) by niro
File size: 1237 byte(s)
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| 1 | From: Andi Kleen <ak@suse.de> |
| 2 | Date: Fri, 21 Apr 2006 07:43:22 +0000 (+0200) |
| 3 | Subject: [PATCH] x86_64: Pass -32 to the assembler when compiling the 32bit vsyscall pages |
| 4 | X-Git-Url: http://www.kernel.org/git/?p=linux/kernel/git/stable/linux-2.6.16.y.git;a=commitdiff;h=355bd3d4ea761a66880088ac2d0c5c95866df4a6 |
| 5 | |
| 6 | [PATCH] x86_64: Pass -32 to the assembler when compiling the 32bit vsyscall pages |
| 7 | |
| 8 | This quietens warnings and actually fixes a bug. The unwind tables would |
| 9 | come out wrong without -32, causing pthread cancellation during them |
| 10 | to crash in the gcc runtime. |
| 11 | |
| 12 | The problem seems to only happen with newer binutils |
| 13 | (it doesn't happen with 2.16.91.0.2 but happens wit 2.16.91.0.5) |
| 14 | |
| 15 | Thanks to Brian Baker @ HP for test case and initial analysis. |
| 16 | |
| 17 | Cc: brian.b@hp.com |
| 18 | |
| 19 | Signed-off-by: Andi Kleen <ak@suse.de> |
| 20 | Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> |
| 21 | --- |
| 22 | |
| 23 | --- a/arch/x86_64/ia32/Makefile |
| 24 | +++ b/arch/x86_64/ia32/Makefile |
| 25 | @@ -27,5 +27,5 @@ $(obj)/vsyscall-sysenter.so $(obj)/vsysc |
| 26 | $(obj)/vsyscall-%.so: $(src)/vsyscall.lds $(obj)/vsyscall-%.o FORCE |
| 27 | $(call if_changed,syscall) |
| 28 | |
| 29 | -AFLAGS_vsyscall-sysenter.o = -m32 |
| 30 | -AFLAGS_vsyscall-syscall.o = -m32 |
| 31 | +AFLAGS_vsyscall-sysenter.o = -m32 -Wa,-32 |
| 32 | +AFLAGS_vsyscall-syscall.o = -m32 -Wa,-32 |