From: Arnd Bergmann <arnd@arndb.de>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, "Ira W. Snyder" <iws@ovro.caltech.edu>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Subject: Re: [PATCH 2/2] vhost_net: a kernel-level virtio server
Date: Thu, 13 Aug 2009 16:53:46 +0200 [thread overview]
Message-ID: <200908131653.47029.arnd@arndb.de> (raw)
In-Reply-To: <20090813144129.GB5080@redhat.com>
On Thursday 13 August 2009, Michael S. Tsirkin wrote:
> The best way to do this IMO would be to add zero copy support to raw
> sockets, vhost will then get it basically for free.
Yes, that would be nice. I wonder if that could lead to security
problems on TX though. I guess It will only bring significant performance
improvements if we leave the data writable in the user space or guest
during the operation. If the user finds the right timing, it could
modify the frame headers after they have been checked using netfilter,
or while the frames are being consumed in the kernel (e.g. an NFS
server running in a guest).
Ardn <><
next prev parent reply other threads:[~2009-08-13 14:53 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <cover.1249930169.git.mst@redhat.com>
2009-08-10 18:53 ` [PATCH 1/2] export cpu_tlbstate to modules Michael S. Tsirkin
2009-08-10 21:56 ` H. Peter Anvin
2009-08-10 22:06 ` Michael S. Tsirkin
2009-08-10 22:24 ` H. Peter Anvin
2009-08-11 11:19 ` Michael S. Tsirkin
2009-08-10 18:53 ` [PATCH 2/2] vhost_net: a kernel-level virtio server Michael S. Tsirkin
2009-08-10 19:51 ` Arnd Bergmann
2009-08-10 20:10 ` Michael S. Tsirkin
2009-08-10 22:16 ` Arnd Bergmann
2009-08-12 17:03 ` Arnd Bergmann
2009-08-12 17:19 ` Ira W. Snyder
2009-08-12 17:31 ` Michael S. Tsirkin
2009-08-12 17:48 ` Ira W. Snyder
2009-08-13 5:55 ` Michael S. Tsirkin
2009-08-12 17:21 ` Michael S. Tsirkin
2009-08-12 17:59 ` Arnd Bergmann
2009-08-12 19:27 ` Anthony Liguori
2009-08-13 6:31 ` Michael S. Tsirkin
2009-08-13 6:06 ` Michael S. Tsirkin
2009-08-13 13:38 ` Arnd Bergmann
2009-08-13 13:48 ` Arnd Bergmann
2009-08-13 14:41 ` Michael S. Tsirkin
2009-08-13 14:53 ` Arnd Bergmann [this message]
2009-08-13 15:37 ` Avi Kivity
2009-08-20 7:25 ` Rusty Russell
2009-08-13 14:39 ` Michael S. Tsirkin
2009-08-13 14:58 ` Arnd Bergmann
2009-08-13 15:03 ` Michael S. Tsirkin
2009-08-12 19:22 ` Anthony Liguori
2009-08-13 8:45 ` Michael S. Tsirkin
2009-08-13 13:45 ` Arnd Bergmann
2009-08-12 19:58 ` Paul E. McKenney
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