From: Asias He <asias@redhat.com>
To: Rusty Russell <rusty@rustcorp.com.au>
Cc: virtualization@lists.linux-foundation.org, kvm@vger.kernel.org,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [PATCH] virtio-blk: Disable callback in virtblk_done()
Date: Fri, 28 Sep 2012 15:03:56 +0800 [thread overview]
Message-ID: <50654BDC.4060805@redhat.com> (raw)
In-Reply-To: <87fw623chz.fsf@rustcorp.com.au>
On 09/28/2012 02:08 PM, Rusty Russell wrote:
> Asias He <asias@redhat.com> writes:
>>> I forgot about the cool hack which MST put in to defer event updates
>>> using disable_cb/enable_cb.
>>
>> Hmm, are you talking about virtqueue_enable_cb_delayed()?
>
> Just the fact that virtqueue_disable_cb() prevents updates of
> used_index, and then we do the update in virtqueue_enable_cb().
Okay.
--
Asias
next prev parent reply other threads:[~2012-09-28 7:03 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-25 2:36 [PATCH] virtio-blk: Disable callback in virtblk_done() Asias He
2012-09-25 14:08 ` Asias He
2012-09-27 0:10 ` Rusty Russell
2012-09-27 6:48 ` Asias He
2012-09-28 6:08 ` Rusty Russell
2012-09-28 7:03 ` Asias He [this message]
2012-09-27 10:01 ` Paolo Bonzini
2012-09-28 8:32 ` Michael S. Tsirkin
[not found] ` <50642400.5030906@redhat.com>
2012-10-02 14:42 ` Stefan Hajnoczi
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