From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Anthony Liguori <aliguori-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Cc: kvm-devel
<kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
virtualization
<virtualization-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>
Subject: Re: [Virtio-for-kvm] [PATCH 7/7] userspace virtio
Date: Wed, 02 Jan 2008 19:22:27 +0200 [thread overview]
Message-ID: <477BC853.405@qumranet.com> (raw)
In-Reply-To: <477BB5D2.6010304-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Anthony Liguori wrote:
> I think we should hold off on this sort of patch at first. I know it
> improves performance, but it's very hack-ish. I have a similar patch[1]
> that improves performance more but is even more hack-ish.
>
> I think we have to approach this by not special cases virtio-net to know
> about the tap fd, but to figure out the interface that virtio-net would
> need to be efficient, and then refactor the net interface to look like
> that. Then we can still support user, pcap, and the other network
> transports.
>
> [1] http://hg.codemonkey.ws/qemu-virtio/file/75cefe566cea/aio-net.diff
>
While you are right in principle, high performance networking is long
overdue in kvm so I applied that patch. Once a mega async dma framework
is added to qemu, we'll just revert that patch prior to adding the glue
to said framework.
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next prev parent reply other threads:[~2008-01-02 17:22 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-21 14:46 [Virtio-for-kvm] [PATCH 7/7] userspace virtio Dor Laor
2007-12-23 10:56 ` [kvm-devel] " Avi Kivity
[not found] ` <476BD1A9.2040701-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-12-23 10:56 ` Avi Kivity
2008-01-02 16:03 ` Anthony Liguori
2008-01-02 17:22 ` [kvm-devel] " Avi Kivity
[not found] ` <477BB5D2.6010304-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-01-02 17:22 ` Avi Kivity [this message]
[not found] ` <477BC853.405-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2008-01-02 21:45 ` Dor Laor
2008-01-02 21:45 ` [kvm-devel] " Dor Laor
2008-01-02 16:03 ` Anthony Liguori
-- strict thread matches above, loose matches on Subject: below --
2007-12-21 14:46 Dor Laor
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