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To: Kurt Garloff <garloff@suse.de>
Cc: Steve Kieu <haiquy@yahoo.com>, kernel <linux-kernel@vger.kernel.org>
Subject: Re: 2.4.19-pre6aa1 (possible all kernel after 2.4.19-pre2) athlon
 PCI workaround
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From: Vincent Bernat <bernat@free.fr>
Organization: Kabale Inc
Date: Fri, 19 Apr 2002 12:18:03 +0200
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OoO En cette matin?e ensoleill?e du mardi 16 avril 2002, vers 09:57,
Kurt Garloff <garloff@suse.de> disait:

>> > and claiming that not clearing bit 5 did make the
>> > problem go away.
>> > (IOW: Replace v &= 0x1f; /* clear bits 5, 6, 7 */
>> >            by v &= 0x3f; /* clear bits 6, 7 */
>> >  and see whether this helps.)

> It would be intersting to know. Maybe just clearing bits 6 and 7
> would make everybody happy? 

Another related hack is to modify latency of this northbridge to 0 and
to increase latency of "bandwidth eating" components. On
french-speaking newsgroup fr.comp.os.linux.moderated, we have several
reports that complete freeze of the system with TV cards can be
postponed (at least ; in my case, they disappeared) by this
tweak. Since, this is TV card related, I have already submitted this
to bttv maintainer (I haven't checked if latest revisions of bttv
include an option for this) but maybe decreasing to 0 the northbridge
latency could help some people too (with or without TV card).
-- 
BOFH excuse #5:
static from plastic slide rules
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