Re: [PATCH] 2.5.14 IDE 56

Andi Kleen
2002-05-14T22:29:19Z

On Mon, May 13, 2002 at 07:51:00PM +0200, Pavel Machek wrote:
> Hi!
>
> > The tricky bit is to avoid prefetches over the boundary of your copy.
> > Prefetching from an uncached area or write combined area (like the
> > AGP gart which could start in next page) triggers hardware bugs in
> > various boxes. This unfortunately complicates the prefetching loops
> > a bit.
>
> CONFIG_MY_MACHINE_AINT_BORKEN? We definitely could assume that on x86-64.

I was advised by AMD that I should better avoid it even for future boxes.

-Andi