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Re: [Qemu-devel] [PATCH 0/3] Introduce virtqueue_get_avail_bytes()

From: Amit Shah
Subject: Re: [Qemu-devel] [PATCH 0/3] Introduce virtqueue_get_avail_bytes()
Date: Thu, 26 Jul 2012 19:57:06 +0530

On (Fri) 06 Jul 2012 [16:07:06], Amit Shah wrote:
> The current virtqueue_avail_bytes() is a weird API: it's oddly-named:
> doesn't tell us what the API is going to do, and also suits just one
> use-case (that in virtio-net.c).
> Introduce virtqueue_get_avail_bytes(), which returns the number of
> bytes in the vq available for input as well as output.
> virtqueue_avail_bytes() is made a wrapper around this new function for
> now.  It should be deprecated soon, though.
> Doing this will also help with the virtio-rng patch where a
> VirtQueueElement is popped only to find out what its size is.  With
> this series applied, the popping (and the subsequent save/load of
> state for migration) isn't necessary.
> The virtio-serial-bus code becomes better too, that's patch 3 here.
> Please apply,

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