linux-kernel - Re: [PATCH net-next V2 0/3] basic in order support for vhost

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 9 Jan 2019 20:19:58 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     mst@...hat.com
Cc:     kvm@...r.kernel.org, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next V2 0/3] basic in order support for vhost_net


On 2019/1/9 下午4:05, Jason Wang wrote:
> Hi:
>
> This series implement basic in order feature support for
> vhost_net. This feature requires both driver and device to use
> descriptors in order which can simplify the implementation and
> optimizaton for both side. The series also implement a simple
> optimization that avoid read available ring. Test shows 10%
> performance improvement at most.
>
> More optimizations could be done on top.
>
> Changes from V1:
> - no code changes
> - add result of SMAP off


Just notice the patch works only for some specific case e.g a buffer 
only contain one descriptor. Will respin.

Thanks


>
> Jason Wang (3):
>    virtio: introduce in order feature bit
>    vhost_net: support in order feature
>    vhost: don't touch avail ring if in_order is negotiated
>
>   drivers/vhost/net.c                |  6 ++++--
>   drivers/vhost/vhost.c              | 19 ++++++++++++-------
>   include/uapi/linux/virtio_config.h |  6 ++++++
>   3 files changed, 22 insertions(+), 9 deletions(-)
>