Re: AmigaOne 2.6.x Linux kernel port
On Thu, Dec 01, 2005 at 11:20:20PM +0100, Gerhard Pircher wrote:
> > --- Ursprüngliche Nachricht ---
> > Von: Ken Moffat <zarniwhoop@ntlworld.com>
> > An: Gerhard Pircher <gerhard_pircher@gmx.net>
> > Kopie: debian-powerpc@lists.debian.org
> > Betreff: Re: AmigaOne 2.6.x Linux kernel port
> > Datum: Thu, 1 Dec 2005 01:36:59 +0000 (GMT)
> >
> > A few more comments I forgot to make earlier -
> >
> > > ...DMA corruption...
> >
> > The problem, as BenH pointed out, is that the main ppc
> > code assumes cache coherency for these CPUs - unlike some
> > of the embedded processors. I never got it to work
> > reliably after Bart rewrote some of the ide code
> > in circa 2.6.10, but the errors sound familiar - been
> > there, still got the scars :)
> Well, my patch atleast could fix the problem for all drivers, so IMHO it's a
> step in the right direction. It would not only be a solution for the
> AmigaOne, but also for the Pegasos 1, which suffers more or less from the
> same problems (the author of PegXLin informed me that the Pegasos 1 kernel
> works much better with my patches and shows no DMA data corruption until
> now).
Unless he does have one of the pre-april boards, this should not be a problem
on the pegasos, i long used a pegasos 1 as always on-email gateway, X/web/mail
machine for my wife, and d-i autobuilder, with uptimes > 2 month or so (well,
i think i reached 4 month and only switched the box off when upgrading kernel
or when my wife accidentally hit the reset button instead of the cd-eject one
:). True i had only 128MB of good quality ram in the machine though, but i
never experienced data corruption, and as said, we hardware patched the
articia to solve this problem, even though the MAI guys refused to admit their
chip was buggy.
Friendly,
Sven Luther
Reply to: