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| author | H. Peter Anvin <hpa@zytor.com> | 2008-02-14 23:56:45 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-02-26 12:55:51 +0100 |
| commit | 959b3be64cab9160cd74532a49b89cdd918d38e9 (patch) | |
| tree | 838955725add661e1e82894be13a32b5380eceae /include/asm-x86/thread_info_64.h | |
| parent | x86: require family >= 6 if we are using P6 NOPs (diff) | |
| download | linux-959b3be64cab9160cd74532a49b89cdd918d38e9.tar.xz linux-959b3be64cab9160cd74532a49b89cdd918d38e9.zip | |
x86: don't use P6_NOPs if compiling with CONFIG_X86_GENERIC
P6_NOPs are definitely not supported on some VIA CPUs, and possibly
(unverified) on AMD K7s. It is also the only thing that prevents a
686 kernel from running on Transmeta TM3x00/5x00 (Crusoe) series.
The performance benefit over generic NOPs is very small, so when
building for generic consumption, avoid using them.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/thread_info_64.h')
0 files changed, 0 insertions, 0 deletions