[PATCH v3 07/28] vhost: change to single IOTLB cache per device

[Xia, Chenbo]

> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin at redhat.com>
> Sent: Friday, May 26, 2023 12:26 AM
> To: dev at dpdk.org; Xia, Chenbo <chenbo.xia at intel.com>;
> david.marchand at redhat.com; mkp at redhat.com; fbl at redhat.com;
> jasowang at redhat.com; Liang, Cunming <cunming.liang at intel.com>; Xie, Yongji
> <xieyongji at bytedance.com>; echaudro at redhat.com; eperezma at redhat.com;
> amorenoz at redhat.com; lulu at redhat.com
> Cc: Maxime Coquelin <maxime.coquelin at redhat.com>
> Subject: [PATCH v3 07/28] vhost: change to single IOTLB cache per device
> 
> This patch simplifies IOTLB implementation and improves
> IOTLB memory consumption by having a single IOTLB cache
> per device, instead of having one per queue.
> 
> In order to not impact performance, it keeps an IOTLB lock
> per virtqueue, so that there is no contention between
> multiple queue trying to acquire it.
> 
> Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
> ---
>  lib/vhost/iotlb.c      | 212 +++++++++++++++++++----------------------
>  lib/vhost/iotlb.h      |  43 ++++++---
>  lib/vhost/vhost.c      |  18 ++--
>  lib/vhost/vhost.h      |  16 ++--
>  lib/vhost/vhost_user.c |  23 +++--
>  5 files changed, 159 insertions(+), 153 deletions(-)
> 
> --
> 2.40.1

Reviewed-by: Chenbo Xia <chenbo.xia at intel.com>