linux-kernel - Re: [PATCH 2/2] vhost_net: a kernel-level virtio server

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20090813084512.GA4401@redhat.com>
Date:	Thu, 13 Aug 2009 11:45:13 +0300
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Anthony Liguori <anthony@...emonkey.ws>
Cc:	Arnd Bergmann <arnd@...db.de>,
	virtualization@...ts.linux-foundation.org,
	"Ira W. Snyder" <iws@...o.caltech.edu>, netdev@...r.kernel.org,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] vhost_net: a kernel-level virtio server

On Wed, Aug 12, 2009 at 02:22:38PM -0500, Anthony Liguori wrote:
> Michael S. Tsirkin wrote:
>>>
>>> We discussed this before, and I still think this could be directly derived
>>> from struct virtqueue, in the same way that vring_virtqueue is derived from
>>> struct virtqueue.
>>>     
>>
>> I prefer keeping it simple. Much of abstraction in virtio is due to the
>> fact that it needs to work on top of different hardware emulations:
>> lguest,kvm, possibly others in the future.  vhost is always working on
>> real hardware, using eventfd as the interface, so it does not need that.
>>   
>
> Actually, vhost may not always be limited to real hardware.

Yes, any ethernet device will do. What I mean is that vhost does not
deal with emulation at all. All setup is done in userspace.

>
> We may on day use vhost as the basis of a driver domain.  There's quite  
> a lot of interest in this for networking.

You can use veth for this. This works today.

> At any rate, I'd like to see performance results before we consider  
> trying to reuse virtio code.
> 
> Regards,
>
> Anthony Liguori
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/