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(parent: 6a4f3b5) | patch
x86: Fix vsyscall on gcc 4.5 with -Os
authorAndi Kleen <andi@firstfloor.org>
Fri, 18 Jun 2010 21:09:00 +0000 (23:09 +0200)
committerH. Peter Anvin <hpa@linux.intel.com>
Fri, 18 Jun 2010 21:16:31 +0000 (14:16 -0700)
commit124482935fb7fb9303c8a8ab930149c6a93d9910
tree0c5aa0cd2e19bad8fce42d0d551e84c30f708aa5tree | snapshot (tar.gz zip)
parent6a4f3b523779b67e7d560ed42652f8a59f2f9782commit | diff
x86: Fix vsyscall on gcc 4.5 with -Os

This fixes the -Os breaks with gcc 4.5 bug.  rdtsc_barrier needs to be
force inlined, otherwise user space will jump into kernel space and
kill init.

This also addresses http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44129
I believe.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
LKML-Reference: <20100618210859.GA10913@basil.fritz.box>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@kernel.org>
arch/x86/include/asm/system.h diff | blob | blame | history