Re: kern/42662: iop driver makes kernel crash or freeze

[Aleksej Saushev <asau%inbox.ru@localhost>]

The following reply was made to PR kern/42662; it has been noted by GNATS.

From: Aleksej Saushev <asau%inbox.ru@localhost>
To: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
Cc: gnats-bugs%NetBSD.org@localhost,  kern-bug-people%NetBSD.org@localhost,  
gnats-admin%NetBSD.org@localhost,  netbsd-bugs%NetBSD.org@localhost
Subject: Re: kern/42662: iop driver makes kernel crash or freeze
Date: Mon, 08 Feb 2010 22:06:03 +0300

 Manuel Bouyer <bouyer%antioche.eu.org@localhost> writes:
 
 > On Mon, Feb 08, 2010 at 08:21:09PM +0300, Aleksej Saushev wrote:
 >> The following fixes the problem for me, I can boot installation CD and
 >> have access to disk storage (am able to read disklabel).
 
 ...
 
 > But the third bus_dmamap_sync() fix is probably also required, the
 > bus_dmamap_sync usage here is wrong and things will go wrong on any
 > platform where a bus_dmamap_sync() is more than a simple memory
 > barrier. On i386 you won't see it; you may on amd64 with
 > more than 4Gb ram (depending on how the memory used here was allocated).
 
 I cannot check it anywhere else, I don't have other hardware.
 
 
 -- 
 HE CE3OH...