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[100.0.197.103]) by smtp.gmail.com with ESMTPSA id k9sm1894099qki.20.2019.05.30.11.13.30 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 30 May 2019 11:13:31 -0700 (PDT) Date: Thu, 30 May 2019 14:13:28 -0400 From: "Michael S. Tsirkin" To: David Miller 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 Message-ID: <20190530141243-mutt-send-email-mst@kernel.org> References: <20190524081218.2502-1-jasowang@redhat.com> <20190530.110730.2064393163616673523.davem@davemloft.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190530.110730.2064393163616673523.davem@davemloft.net> 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: 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. Thanks! -- MST