From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gerd Hoffmann Subject: Re: Re: pv_ops dom0 USB fixed Date: Fri, 19 Dec 2008 13:20:42 +0100 Message-ID: <494B919A.9070803@redhat.com> References: <4940210C.1060401@goop.org> <4942D0F9.7080903@goop.org> <4942E6FD.6080601@goop.org> <1e16a9ed0812131102s79d231depef1466fda8e2b897@mail.gmail.com> <1e16a9ed0812131753m3412e3ffgd9028185c90c2c40@mail.gmail.com> <1229334549.25349.82.camel@zakaz.uk.xensource.com> <1e16a9ed0812151015v50867776l100c1830380f8411@mail.gmail.com> <4946BBF5.30508@goop.org> <49493182.9070707@redhat.com> <49495403.1000400@goop.org> <494A1335.60609@redhat.com> <494AB29C.7030902@goop.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <494AB29C.7030902@goop.org> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Jeremy Fitzhardinge Cc: deshantm@gmail.com, Aviv Grafi , Xen-devel , Andrew Lyon , Ian Campbell List-Id: xen-devel@lists.xenproject.org Jeremy Fitzhardinge wrote: > Can you try changing include/linux/libata.h: > > -#undef ATA_DEBUG /* debugging output */ > +#define ATA_DEBUG /* debugging output */ Log became a bit longer ... http://kraxel.fedorapeople.org/for-jeremy/ There is also a (maybe related) BUG in there. It fails notably faster now, early in the init scripts. Some race maybe? The timing changes due to the excessive debug output makes it happen more likely? > Also, does swiotlb=0 make any difference? It doesn't. Hmm, from the boot messages it looks like it doesn't actually disable the swiotb ... HTH, Gerd