Re: Stomping on Athlon bug

Eric W. Biederman (ebiederm@xmission.com)
13 Sep 2001 10:33:36 -0600


Jan Niehusmann <jan@gondor.com> writes:

> On Thu, Sep 13, 2001 at 08:21:49AM -0400, Arjan van de Ven wrote:
> > On Thu, Sep 13, 2001 at 02:19:38PM +0200, Jan Niehusmann wrote:
> > > But, as far as I understand, STPGNT will not be enabled unless ACPI
> > > power saving is in use, so setting the disconnect on STPGNT bit should
> > > not matter.
> >
> > That is incorrect; it works perferctly well without ACPI.
>
> Exactly what is incorrect?
> AFAICS, STPGNT is not triggered by hlt, so the linux idle function
> doesn't set STPGNT.

Hmm. At least on the AMD76[12] you can trigger a processor disconnect
on hlt. However the buggy BIOS had disconnects disabled so it doesn't/shouldn't
matter.

Eric
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/