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[2620:137:e000::1:9]) by mx.google.com with ESMTPS id m16si455905ejd.347.2019.05.30.11.55.51 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 30 May 2019 11:55:51 -0700 (PDT) Received-SPF: neutral (google.com: 2620:137:e000::1:9 is neither permitted nor denied by best guess record for domain of davem@davemloft.net) client-ip=2620:137:e000::1:9; Authentication-Results: mx.google.com; spf=neutral (google.com: 2620:137:e000::1:9 is neither permitted nor denied by best guess record for domain of davem@davemloft.net) smtp.mailfrom=davem@davemloft.net Received: from localhost (unknown [IPv6:2601:601:9f80:35cd::3d5]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id D87A914D9DD5B; Thu, 30 May 2019 11:55:49 -0700 (PDT) Date: Thu, 30 May 2019 11:55:49 -0700 (PDT) Message-Id: <20190530.115549.1509561180724590494.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 From: David Miller In-Reply-To: <20190530141243-mutt-send-email-mst@kernel.org> References: <20190524081218.2502-1-jasowang@redhat.com> <20190530.110730.2064393163616673523.davem@davemloft.net> <20190530141243-mutt-send-email-mst@kernel.org> X-Mailer: Mew version 6.8 on Emacs 26.1 Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Thu, 30 May 2019 11:55:50 -0700 (PDT) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: "Michael S. Tsirkin" 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 >> 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!