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Date:   Sun, 5 May 2019 17:20:31 +0800
From:   Jason Wang <>
Subject: Re: [RFC PATCH V3 0/6] vhost: accelerate metadata access

On 2019/4/23 下午1:54, Jason Wang wrote:
> This series tries to access virtqueue metadata through kernel virtual
> address instead of copy_user() friends since they had too much
> overheads like checks, spec barriers or even hardware feature
> toggling. This is done through setup kernel address through direct
> mapping and co-opreate VM management with MMU notifiers.
> Test shows about 23% improvement on TX PPS. TCP_STREAM doesn't see
> obvious improvement.

Ping. Comments are more than welcomed.


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