diff options
| author | Kirill Korotaev <dev@openvz.org> | 2007-10-17 12:04:33 -0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@inhelltoy.tec.linutronix.de> | 2007-10-17 14:15:31 -0400 |
| commit | c1217a75ea102d4e69321f210fab60bc47b9a48e (patch) | |
| tree | fffa575916b27bac17dfb751300ed2e1f9107f0c /arch/x86/kernel/alternative.c | |
| parent | f891dd18c107d582c3ab98da5209c930e16baf78 (diff) | |
x86: mark read_crX() asm code as volatile
Some gcc versions (I checked at least 4.1.1 from RHEL5 & 4.1.2 from gentoo)
can generate incorrect code with read_crX()/write_crX() functions mix up,
due to cached results of read_crX().
The small app for x8664 below compiled with -O2 demonstrates this
(i686 does the same thing):
Diffstat (limited to 'arch/x86/kernel/alternative.c')
0 files changed, 0 insertions, 0 deletions