Re: Defect (Bug) Report

From: Erik Mouw (J.A.K.Mouw@its.tudelft.nl)
Date: Sun Feb 02 2003 - 08:35:01 EST

On Sun, Feb 02, 2003 at 02:21:35PM +0000, Alan Cox wrote:
> On Sun, 2003-02-02 at 12:49, Erik Mouw wrote:
> > Exact BIOS revision doesn't seem to matter. Any more suggestions?
>
> BIOS revision matters too. With 1004 you need to set MP 1.1 not MP 1.4
> and APIC works reliably. With 1007 it seems that isnt needed but people
> report weird hangs. 1004 also won't POST with a broadcom ethernet card
> in it.

Yes, I've seen weird hangs with 1007 and MP 1.4. "noapic" fixes it. Do
you suggest using MP 1.1 even with 1007?

> The proper fix for the PS/2 mouse/IDE problem appears to be always
> mapping out the page at 636-640K. Andi posted an ugly patch to handle
> that, but doing it cleanly is trickier.

I think I missed his patch, but a dirty trick I could think of would be
to put a "reserved" entry in the e820 RAM map we got from the BIOS.

Erik 

-- 
J.A.K. (Erik) Mouw
Email: J.A.K.Mouw@its.tudelft.nl  mouw@nl.linux.org
WWW: http://www-ict.its.tudelft.nl/~erik/
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