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Date: Thu, 23 May 2013 13:31:12 -0400 (EDT)
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] qemu seabios issue with vhost-scsi
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To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: Asias He <asias@redhat.com>, Badari Pulavarty <pbadari@us.ibm.com>, qemu-devel <qemu-devel@nongnu.org>, "Nicholas A. Bellinger" <nab@linux-iscsi.org>, Gleb Natapov <gleb@redhat.com>



----- Messaggio originale -----
> Da: "Stefan Hajnoczi" <stefanha@gmail.com>
> A: "Paolo Bonzini" <pbonzini@redhat.com>
> Cc: "Badari Pulavarty" <pbadari@us.ibm.com>, "Asias He" <asias@redhat.com=
>, "Nicholas A. Bellinger"
> <nab@linux-iscsi.org>, "qemu-devel" <qemu-devel@nongnu.org>, "Gleb Natapo=
v" <gleb@redhat.com>
> Inviato: Gioved=C3=AC, 23 maggio 2013 19:18:26
> Oggetto: Re: qemu seabios issue with vhost-scsi
>=20
> On Thu, May 23, 2013 at 6:47 PM, Paolo Bonzini <pbonzini@redhat.com> wrot=
e:
> > Il 23/05/2013 18:38, Badari Pulavarty ha scritto:
> >>> If that is with the old SeaBIOS, then SIGABRT is intended. :)  The gu=
est
> >>> 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.
>=20
> 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.

Paolo