Thread (12 messages) 12 messages, 3 authors, 2019-06-10

Re: [PATCH net-next 0/6] vhost: accelerate metadata access

From: "Michael S. Tsirkin" <mst@redhat.com>
Date: 2019-05-30 18:13:34
Also in: kvm, linux-arm-kernel, linux-mm, lkml

On Thu, May 30, 2019 at 11:07:30AM -0700, David Miller wrote:
From: Jason Wang <redacted>
Date: Fri, 24 May 2019 04:12:12 -0400
quoted
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 like SMAP. 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.
I'm still waiting for some review from mst.

If I don't see any review soon I will just wipe these changes from
patchwork as it serves no purpose to just let them rot there.

Thank you.
I thought we agreed I'm merging this through my tree, not net-next.
So you can safely wipe it.

Thanks!

-- 
MST
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