Date: Tue, 05 Nov 2002 18:02:23 -0500 (EST) From: John Baldwin <jhb@FreeBSD.org> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: freebsd-current@FreeBSD.ORG, Tom Ponsford <tponsford@theriver.com> Subject: Re: machine check on AS2100A Message-ID: <XFMail.20021105180223.jhb@FreeBSD.org> In-Reply-To: <15816.17758.561084.455518@grasshopper.cs.duke.edu>
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On 05-Nov-2002 Andrew Gallatin wrote:
>
> Tom Ponsford writes:
> > Hi All,
> >
> > I'm getting a machine check on my new-toy: an Alphaserver 2100A 4/275 RM.
> >
> > It boots and runs 4.6.2 fine with a single cpu. But after I supped the
> > current 5.0 sources from
> > 10/29/2002 17:39 and did a buildworld and a Generic buildkernel, (plus
> > all the
> > other steps in UPDATING with the exception of installing world) But after an
> > installkernel, I get a machine check, just after the kernel loads and boots.
> >
>
> Can you build a non-SMP kernel and see if that boots please?
>
> Nobody has ever run an SMP kernel on a 2100A, AFAIK. The 2100A has
> problems with multiple machine checks being reported for each machine
> check triggered. I wonder if you're getting a machine check for each
> CPU. Hmmm..
Remember that you had to disable machine checks when firing up the CPU's
on the 2100:
/* lower the ipl and take any pending machine check */
mc_expected = 1;
alpha_mb(); alpha_mb();
alpha_pal_wrmces(7);
(void)alpha_pal_swpipl(ALPHA_PSL_IPL_HIGH);
mc_expected = 0;
Maybe this is relevant to that?
--
John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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