On Mon, Jan 03, 2000 at 06:32:44AM +0000, Matthias Scheler wrote:
> Disabling DMA support in GENERIC is a very, very bad idea. This will result
> in performance loss for lots of people just because of a few broken
> motherboads. Even worse, some people will believe that NetBSD doesn't
> support IDE DMA at all and will switch to another operating system.
> 
> The only reasonable sollution is to add a quirk table and disable DMA
> for the chipset on your particular motherboard by default.

I do have several P5A motherboards and I have problems only with one
motherboard/disk combination (which has been solved by using Ultra-DMA 1
instead of 2). Disabling DMA for this motherboard would be a bad idea too :)

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
--