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
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 -0400quoted
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