prefetchnta on athlon was: Re: an oops in 2.6-test2 (oops)

[Mike Fedyk <mfedyk@matchmail.com>]

On Sat, Aug 16, 2003 at 12:26:40PM -0700, Andrew Morton wrote:
> And you'll continue to get them until someone does something about it. 
> Discussion seemed to die off on this problem.
> 
> Until it is sorted, something like this is needed.
> 
> 
> diff -puN include/asm-i386/processor.h~disble-athlon-prefetch include/asm-i386/processor.h
> --- 25/include/asm-i386/processor.h~disble-athlon-prefetch	2003-08-16 12:22:32.000000000 -0700
> +++ 25-akpm/include/asm-i386/processor.h	2003-08-16 12:23:29.000000000 -0700
> @@ -568,6 +568,8 @@ static inline void rep_nop(void)
>  #define ARCH_HAS_PREFETCH
>  extern inline void prefetch(const void *x)
>  {
> +	if (current_cpu_data.x86_vendor == X86_VENDOR_AMD)
> +		return;

Andrew, if you put this patch in -mm please add a nice big comment above it,
and put it in the "must fix before 2.6.0" list.