[dpdk-dev] [PATCH v3] vhost: read last used index once

[Xia, Chenbo]

> -----Original Message-----
> From: dev <dev-bounces at dpdk.org> On Behalf Of Balazs Nemeth
> Sent: Wednesday, April 7, 2021 5:55 PM
> To: bnemeth at redhat.com; dev at dpdk.org
> Subject: [dpdk-dev] [PATCH v3] vhost: read last used index once
> 
> Instead of calculating the address of a packed descriptor based on the
> vq->desc_packed and vq->last_used_idx every time, store that base
> address in desc_base. On arm, this saves 176 bytes in code size of
> function in which vhost_flush_enqueue_batch_packed gets inlined.
> 
> Signed-off-by: Balazs Nemeth <bnemeth at redhat.com>
> ---
>  lib/librte_vhost/virtio_net.c | 13 ++++++++-----
>  1 file changed, 8 insertions(+), 5 deletions(-)
> 
> diff --git a/lib/librte_vhost/virtio_net.c b/lib/librte_vhost/virtio_net.c
> index 179c57b46..f091384a6 100644
> --- a/lib/librte_vhost/virtio_net.c
> +++ b/lib/librte_vhost/virtio_net.c
> --
> 2.30.2

Patch applied to next-virtio/main, thanks