Re: [PATCH] x86/mmiotrace: remove redundant instruction prefixchecks

[Pekka Paalanen]

On Tue, 18 May 2010 08:48:30 +0900
Akinobu Mita <akinobu.mita@xxxxxxxxx> wrote:

> Get rid of the duplicated entries in prefix_codes[] to eliminate
> redundant checks by skip_prefix().
> 
> Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: Ingo Molnar <mingo@xxxxxxxxxx>
> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
> Cc: x86@xxxxxxxxxx

Acked-by: Pekka Paalanen <pq@xxxxxx>

> ---
>  arch/x86/mm/pf_in.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/x86/mm/pf_in.c b/arch/x86/mm/pf_in.c
> index df3d5c8..308e325 100644
> --- a/arch/x86/mm/pf_in.c
> +++ b/arch/x86/mm/pf_in.c
> @@ -34,7 +34,7 @@
>  /* IA32 Manual 3, 2-1 */
>  static unsigned char prefix_codes[] = {
>  	0xF0, 0xF2, 0xF3, 0x2E, 0x36, 0x3E, 0x26, 0x64,
> -	0x65, 0x2E, 0x3E, 0x66, 0x67
> +	0x65, 0x66, 0x67
>  };
>  /* IA32 Manual 3, 3-432*/
>  static unsigned int reg_rop[] = {
> -- 
> 1.6.0.6
> 
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-- 
Pekka Paalanen
http://www.iki.fi/pq/
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