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Re: [Qemu-devel] qemu seabios issue with vhost-scsi


From: Asias He
Subject: Re: [Qemu-devel] qemu seabios issue with vhost-scsi
Date: Fri, 24 May 2013 08:02:07 +0800
User-agent: Mutt/1.5.21 (2010-09-15)

On Thu, May 23, 2013 at 01:31:12PM -0400, Paolo Bonzini wrote:
> 
> 
> ----- Messaggio originale -----
> > Da: "Stefan Hajnoczi" <address@hidden>
> > A: "Paolo Bonzini" <address@hidden>
> > Cc: "Badari Pulavarty" <address@hidden>, "Asias He" <address@hidden>, 
> > "Nicholas A. Bellinger"
> > <address@hidden>, "qemu-devel" <address@hidden>, "Gleb Natapov" 
> > <address@hidden>
> > Inviato: Giovedì, 23 maggio 2013 19:18:26
> > Oggetto: Re: qemu seabios issue with vhost-scsi
> > 
> > On Thu, May 23, 2013 at 6:47 PM, Paolo Bonzini <address@hidden> wrote:
> > > Il 23/05/2013 18:38, Badari Pulavarty ha scritto:
> > >>> If that is with the old SeaBIOS, then SIGABRT is intended. :)  The guest
> > >>> is buggy, the problem in QEMU only lies in _how_ it fails.
> > >>>
> > >>> Paolo
> > >>>
> > >>>
> > >>
> > >> I am confused now. Without above changes, seabios fix makes the
> > >> guest boot. But with the above changes, I run into this (even with
> > >> seabios fix)
> > >
> > > Ah, okay.  I understood it crashed only with the SeaBIOS fix.
> > >
> > > I'll work on a more proper fix then.
> > 
> > Maybe use the same approach as data plane - activate vhost when
> > userspace sees the first virtqueue kick.  That way it works with weird
> > guests and never aborts.
> 
> Good idea.

I remember you mentioned that you wanted to start vhost earlier when you
were debugging vhost-scsi a few days ago.

> Paolo

-- 
Asias



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