From: "Alan Cox" <alan@lxorguk.ukuu.org.uk>
> On Fri, 2002-10-04 at 14:15, Kevin D. Kissell wrote:
> > Which is excatly the point that Carsten was raising when he started this thread!
> >
> > The question is how, i.e. throttle memcpy or thow away a "guard band" of RAM?
>
>
> The x86 code basically says
>
> while(over 320 bytes left)
> {
> prefetch ahead
> copy bits
> }
> while(bytes left)
> copy bits
Which is safe, simple, and efficient, but does seem to have the property
that there's a "cursed" page in the system that can be randomly allocated
and which will be curiously slow on memcopy(). That might or might not
be a problem in the embedded application space.
Regards,
Kevin K.
