Re: Next round of console patches

Tom Eastep (eastep@loc1.tandem.com)
Mon, 31 Aug 1998 09:18:24 -0700


Richard Gooch wrote:
>
> Tom Eastep writes:

> > Ok -- I patched vesafb.c as follows:
> >
> > mtrr_add((unsigned long)video_base, video_size, MTRR_TYPE_WRCOMB, 1);
> > + mtrr_add((unsigned long)video_base, video_size, MTRR_TYPE_UNCACHABLE,
> > 1);
> >
> > I still got the lockup.
>
> That's quite bad. Can you do two separate tests, please? Firstly,
> insert a printk just before the call to mtrr_add() and send me a copy
> of your kernel logs?

Gerd: Is there a way to defer the call to this code until after boot? It's
getting called so early in the boot sequence that no messages are logged.

> Secondly, disable that code from the kernel and instead use the
> /proc/mtrr interface and tell me if the problem goes away or not.

I'll do that this evening -- the machine that shows this failure hosts a inhouse
web site during the day.

>
> Finally, do you have an SMP machine?

Yes -- it's an HP Vectra XU 6/150 ( 2xPPRO 150 - KX chipset). If you'd like, I
can build a UP kernel and give that a try.

-Tom

-- 
Tom Eastep	
COMPAQ Computer Corporation
Enterprise Computing Group
Tandem Division
tom.eastep@compaq.com

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