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Re: [Qemu-devel] [PATCH 2/2] tap: vhost busy polling support

From: Eric Blake
Subject: Re: [Qemu-devel] [PATCH 2/2] tap: vhost busy polling support
Date: Thu, 24 Mar 2016 14:34:13 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0

On 03/20/2016 11:25 PM, Jason Wang wrote:
> This patch add the capability of basic vhost net busy polling which is
> supported by recent kernel. User could configure the maximum number of
> us that could be spent on busy polling through a new property of tap
> "vhost_poll_us".
> Signed-off-by: Jason Wang <address@hidden>
> ---

> +++ b/qapi-schema.json
> @@ -2532,7 +2532,8 @@
>      '*vhostfd':    'str',
>      '*vhostfds':   'str',
>      '*vhostforce': 'bool',
> -    '*queues':     'uint32'} }
> +    '*queues':     'uint32',
> +    '*vhost_poll_us': 'uint32'} }

Missing documentation.

New interfaces should prefer '-' over '_'; but this is an existing
interface where we already have 'vnet_hdr', so intra-command consistency
makes your naming okay.

Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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