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From: David Miller <davem@davemloft.net>
To: mst@redhat.com
Cc: jasowang@redhat.com, kvm@vger.kernel.org,
	virtualization@lists.linux-foundation.org,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	peterx@redhat.com, James.Bottomley@hansenpartnership.com,
	hch@infradead.org, jglisse@redhat.com, linux-mm@kvack.org,
	linux-arm-kernel@lists.infradead.org,
	linux-parisc@vger.kernel.org, christophe.de.dinechin@gmail.com,
	jrdr.linux@gmail.com
Subject: Re: [PATCH net-next 0/6] vhost: accelerate metadata access
Date: Thu, 30 May 2019 11:55:49 -0700 (PDT)
Message-ID: <20190530.115549.1509561180724590494.davem@davemloft.net> (raw)
In-Reply-To: <20190530141243-mutt-send-email-mst@kernel.org>

From: "Michael S. Tsirkin" <mst@redhat.com>
Date: Thu, 30 May 2019 14:13:28 -0400

> On Thu, May 30, 2019 at 11:07:30AM -0700, David Miller wrote:
>> From: Jason Wang <jasowang@redhat.com>
>> Date: Fri, 24 May 2019 04:12:12 -0400
>> 
>> > 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.

Aha, I didn't catch that, thanks!

  reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-24  8:12 Jason Wang
2019-05-24  8:12 ` [PATCH net-next 1/6] vhost: generalize adding used elem Jason Wang
2019-05-24  8:12 ` [PATCH net-next 2/6] vhost: fine grain userspace memory accessors Jason Wang
2019-05-24  8:12 ` [PATCH net-next 3/6] vhost: rename vq_iotlb_prefetch() to vq_meta_prefetch() Jason Wang
2019-05-24  8:12 ` [PATCH net-next 4/6] vhost: introduce helpers to get the size of metadata area Jason Wang
2019-05-24  8:12 ` [PATCH net-next 5/6] vhost: factor out setting vring addr and num Jason Wang
2019-05-24  8:12 ` [PATCH net-next 6/6] vhost: access vq metadata through kernel virtual address Jason Wang
2019-05-30 18:07 ` [PATCH net-next 0/6] vhost: accelerate metadata access David Miller
2019-05-30 18:13   ` Michael S. Tsirkin
2019-05-30 18:55     ` David Miller [this message]
2019-06-05 20:27 ` Michael S. Tsirkin
2019-06-10  3:50   ` Jason Wang

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