Re: [RFC PATCH V3 0/6] vhost: accelerate metadata access

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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.

Thanks

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