[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: xen drivers to use virtio?
On Fri, Feb 27, 2009 at 11:30 AM, Anthony Liguori <anthony@xxxxxxxxxxxxx> wrote: > Jeremy Fitzhardinge wrote: >> >> Jun Koi wrote: >>> >>> If I understand correctly, we are going to rewrite some xen drivers in >>> Linux kernel to use virtio once virtio is stable. Is that true? >>> >> >> There are no plans to do so. > > Actually, they're already there to some degree now that qemu-dm is tracking > the upstream QEMU tree. virtio support has been in the QEMU tree for some > time now. If it's not enabled in qemu-dm by default, it should be trivial > to enable. From Xend's perspective, virtio devices shouldn't be different > from either rtl8139, e1000, etc. It's just another PCI device. > > This model makes less sense in the context of stub domains, but if you're > running qemu-dm in dom0, you may actually get reasonable performance out of > the virtio drivers. > > In fact, comparing an HVM domain using virtio with qemu-dm in dom0 verses > netfront ala PV-on-HVM would make for a very interesting comparison. > > And assuming PV-on-HVM isn't in upstream Linux yet (that appears to be the > case) and virtio is, it may even be a practical thing to do. > OK, the current picture is getting more clear to me now. Thanks! Jun _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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