linux-kernel - Re: [PATCH] virtio-spec: clarify ro/rw bits and updating rule of virtio-net status field

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Message-ID: <87aa399s0x.fsf@rustcorp.com.au>
Date:	Thu, 22 Mar 2012 15:00:22 +1030
From:	Rusty Russell <rusty@...tcorp.com.au>
To:	"Michael S. Tsirkin" <mst@...hat.com>
Cc:	Jason Wang <jasowang@...hat.com>, linux-kernel@...r.kernel.org,
	virtualization@...ts.linux-foundation.org, qemu-devel@...gnu.org,
	Christian Borntraeger <borntraeger@...ibm.com>
Subject: Re: [PATCH] virtio-spec: clarify ro/rw bits and updating rule of virtio-net status field

On Wed, 21 Mar 2012 08:37:46 +0200, "Michael S. Tsirkin" <mst@...hat.com> wrote:
> Ah. Right, we need to trap for host to clear the bit.
> OK, so let's make the bit RO, and add
> VIRTIO_NET_CTRL_ANNOUNCED to acknowledge that we've
> seen VIRTIO_NET_S_ANNOUNCE using the control VQ?

Thanks, that's nice.  Guest should send arp packets first, then send
VIRTIO_NET_CTRL_ANNOUNCED, and ignore the bit being set in the meantime.

Thanks,
Rusty.
-- 
  How could I marry someone with more hair than me?  http://baldalex.org
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