Re: Problem with ide=nodma

[Bartlomiej Zolnierkiewicz]

On Sat, 9 Oct 2004 01:44:57 +0100 (BST), Ken Moffat
<ken@xxxxxxxxxxxxxxxxxxxxx> wrote:
> On Sat, 9 Oct 2004, Bartlomiej Zolnierkiewicz wrote:
> 
> > On Sat, 9 Oct 2004 00:32:01 +0100 (BST), Ken Moffat
> > <ken@xxxxxxxxxxxxxxxxxxxxx> wrote:
> > > Hi,
> > >
> > >  I'm trying a sii 0680 disk controller at the moment, as a possible
> > > workaround for some via southbridge problems (this is on a ppc which
> > > isn't yet supported by the official kernels, but it has been stable here
> > > since 2.6.7 and looks nearly ready for a first review).  Unfortunately,
> > > DMA is a big no go at the moment so I have to pass ide=nodma in the
> > > bootargs.
> > >
> > >  I've got the drives plugged into the sii card, and ide=reverse is doing
> > > its job.  But although dmesg shows that dma has been turned off,
> >
> > Is it possible that you are reading it wrong?
> 
>  I don't think so, and the box is a lot more responsive.  dmesg shows
> 
> ide_setup: ide=nodmaIDE: Prevented DMA

This is misleading as drivers are free to override this setting.
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