Subject: Re: NMI on Compaq 1850R
To: Havard Eidnes <he@NetBSD.org>
From: Chris Ross <firstname.lastname@example.org>
Date: 01/23/2007 10:42:10
On Jan 23, 2007, at 5:47 AM, Havard Eidnes wrote:
> OK, I reversed the test, and after getting a nudge to commit this
> from a co-developer, that's what I've just done. Many thanks for
> finding the source of this problem and the fix!
Actually, I don't even deserve that thanks. I looked into this a
little bit more yesterday. The original addition of this "BIOS BUG
WORKAROUND" claims to come from OpenBSD. So, I looked at OpenBSD.
They have more simplistic code than NetBSD does (which is,
interestingly, slightly technically different), but similar. The
interesting thing is that a patch very much like yours was applied to
their sources in January of 2005. The note in their CVS tree for
that commit is:
"Intel 82443BX DRAM address errata seems to be fixed in the latest
revisions of the chipset.
Inspired from netbsd pr by scottr@NetBSD.org."
So, I looked. In December 2004, PR port-i386/28759 [critical/
medium] was opened, with a patch. Never to be looked at again, I
So, please thank Scott in addition to myself, and close port-