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From: | Anthony Liguori |
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 |
User-agent: | Thunderbird 2.0.0.19 (X11/20090105) |
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 <address@hidden>
Applied to trunk and stable. Thanks. Regards, Anthony Liguori
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