Re: [Qemu-devel] [PATCH v3] vhost-user: add multi queue support

[Eric Blake]

On 05/21/2015 08:20 AM, Ouyang Changchun wrote:
> From: Changchun Ouyang <address@hidden>
> 

It's better to post a v3 patch as a new top-level thread, rather than
in-reply-to an existing thread.

> Based on patch by Nikolay Nikolaev:
> Vhost-user will implement the multi queue support in a similar way
> to what vhost already has - a separate thread for each queue.
> To enable the multi queue funcionality - a new command line parameter

s/funcionality/functionality/

> "queues" is introduced for the vhost-user netdev.
> 
> Signed-off-by: Nikolay Nikolaev <address@hidden>
> Signed-off-by: Changchun Ouyang <address@hidden>
> ---
> Changes since v2:
>  - fix vq index issue for set_vring_call
>    When it is the case of VHOST_SET_VRING_CALL, The vq_index is not 
> initialized before it is used,
>    thus it could be a random value. The random value lead to crash in vhost 
> after passing down
>    to vhost, as vhost use this random value to index an array index.
>  - fix the typo in the doc and description
>  - address vq index for reset_owner

> +++ b/qapi-schema.json
> @@ -2444,12 +2444,16 @@
>  #
>  # @vhostforce: #optional vhost on for non-MSIX virtio guests (default: 
> false).
>  #
> +# @queues: #optional number of queues to be created for multiqueue 
> vhost-user (default: 1).

Long line; please wrap to fit under 80 columns.

> +#          (Since 2.4)
> +#
>  # Since 2.1
>  ##
>  { 'struct': 'NetdevVhostUserOptions',
>    'data': {
>      'chardev':        'str',
> -    '*vhostforce':    'bool' } }
> +    '*vhostforce':    'bool',
> +    '*queues':        'uint32' } }

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

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