From: Anthony Liguori <aliguori@us.ibm.com>
To: Alex Williamson <alex.williamson@hp.com>
Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org
Subject: Re: [PATCH] qemu:virtio: Allow guest to defer VIRTIO_F_NOTIFY_ON_EMPTY
Date: Fri, 20 Mar 2009 12:31:29 -0500 [thread overview]
Message-ID: <49C3D2F1.2050305@us.ibm.com> (raw)
In-Reply-To: <20090319162118.24068.98794.stgit@kvm.aw>
Alex Williamson wrote:
> There may be cases where the guest does not want the avail queue
> interrupt, even when it's empty. For the virtio-net case, the
> guest may use a different buffering scheme or decide polling for
> used buffers is more efficient. This can be accomplished by simply
> checking for whether the guest has acknowledged the existing notify
> on empty flag.
>
> Signed-off-by: Alex Williamson <alex.williamson@hp.com>
>
Applied to trunk and stable. Thanks.
Regards,
Anthony Liguori
>
WARNING: multiple messages have this Message-ID (diff)
From: Anthony Liguori <aliguori@us.ibm.com>
To: Alex Williamson <alex.williamson@hp.com>
Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org
Subject: [Qemu-devel] Re: [PATCH] qemu:virtio: Allow guest to defer VIRTIO_F_NOTIFY_ON_EMPTY
Date: Fri, 20 Mar 2009 12:31:29 -0500 [thread overview]
Message-ID: <49C3D2F1.2050305@us.ibm.com> (raw)
In-Reply-To: <20090319162118.24068.98794.stgit@kvm.aw>
Alex Williamson wrote:
> There may be cases where the guest does not want the avail queue
> interrupt, even when it's empty. For the virtio-net case, the
> guest may use a different buffering scheme or decide polling for
> used buffers is more efficient. This can be accomplished by simply
> checking for whether the guest has acknowledged the existing notify
> on empty flag.
>
> Signed-off-by: Alex Williamson <alex.williamson@hp.com>
>
Applied to trunk and stable. Thanks.
Regards,
Anthony Liguori
>
next prev parent reply other threads:[~2009-03-20 17:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-19 16:21 [PATCH] qemu:virtio: Allow guest to defer VIRTIO_F_NOTIFY_ON_EMPTY Alex Williamson
2009-03-19 16:21 ` [Qemu-devel] " Alex Williamson
2009-03-20 17:31 ` Anthony Liguori [this message]
2009-03-20 17:31 ` [Qemu-devel] " Anthony Liguori
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