linux-kernel - Re: [PATCH] virtio: support reserved vqs

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Message-ID: <874nnbj2j5.fsf@rustcorp.com.au>
Date:	Thu, 06 Sep 2012 12:11:50 +0930
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	"Michael S. Tsirkin" <mst@...hat.com>,
	Ohad Ben-Cohen <ohad@...ery.com>,
	Christian Borntraeger <borntraeger@...ibm.com>,
	Cornelia Huck <cornelia.huck@...ibm.com>, linux390@...ibm.com,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Stratos Psomadakis <psomas@...ab.ece.ntua.gr>,
	"David S. Miller" <davem@...emloft.net>, lguest@...ts.ozlabs.org,
	linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org,
	virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org
Subject: Re: [PATCH] virtio: support reserved vqs

"Michael S. Tsirkin" <mst@...hat.com> writes:

> virtio network device multiqueue support reserves
> vq 3 for future use (useful both for future extensions and to make it
> pretty - this way receive vqs have even and transmit - odd numbers).
> Make it possible to skip initialization for
> specific vq numbers by specifying NULL for name.
> Document this usage as well as (existing) NULL callback.
>
> Drivers using this not coded up yet, so I simply tested
> with virtio-pci and verified that this patch does
> not break existing drivers.
>
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>

This seems sane.  Applied.

Thanks,
Rusty.
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