On Wed, Aug 04, 1999 at 01:20:59PM +0200, Dag-Erling Smorgrav wrote:
> "Kelly Yancey" <kby...@alcnet.com> writes:
> > [...]
>
> Which reminds me - has anyone thought of using DMA for zeroing pages,
> to avoid cache invalidation? The idea is to keep a chunk of zeroes on
> disk and DMA it into memory instead of clearing pages "manually". This
> assumes your disk supports DMA, of course.
On a Pentium III, you can use the new instructions to do page zero'ing
without allocating cache lines.
-Arun
To Unsubscribe: send mail to majord...@freebsd.org
with "unsubscribe freebsd-hackers" in the body of the message
