From mboxrd@z Thu Jan 1 00:00:00 1970 From: hch@lst.de (Christoph Hellwig) Date: Fri, 1 Feb 2019 16:51:20 +0100 Subject: [PATCH] nvme: Enable acceleration feature of A64FX processor In-Reply-To: <20190201124615.16107-1-indou.takao@jp.fujitsu.com> References: <20190201124615.16107-1-indou.takao@jp.fujitsu.com> Message-ID: <20190201155120.GA5180@lst.de> On Fri, Feb 01, 2019@09:46:15PM +0900, Takao Indoh wrote: > From: Takao Indoh > > Fujitsu A64FX processor has a feature to accelerate data transfer of > internal bus by relaxed ordering. It is enabled when the bit 56 of dma > address is set to 1. > > This patch introduces this acceleration feature to the NVMe driver to > enhance NVMe device performance. This has absolutely no business in a PCIe driver, sorry. From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4E09CC282D8 for ; Fri, 1 Feb 2019 15:51:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 27DB12086C for ; Fri, 1 Feb 2019 15:51:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728668AbfBAPvW (ORCPT ); Fri, 1 Feb 2019 10:51:22 -0500 Received: from verein.lst.de ([213.95.11.211]:35533 "EHLO newverein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726172AbfBAPvV (ORCPT ); Fri, 1 Feb 2019 10:51:21 -0500 Received: by newverein.lst.de (Postfix, from userid 2407) id 545E168D93; Fri, 1 Feb 2019 16:51:20 +0100 (CET) Date: Fri, 1 Feb 2019 16:51:20 +0100 From: Christoph Hellwig To: Takao Indoh Cc: keith.busch@intel.com, axboe@fb.com, hch@lst.de, sagi@grimberg.me, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, Takao Indoh Subject: Re: [PATCH] nvme: Enable acceleration feature of A64FX processor Message-ID: <20190201155120.GA5180@lst.de> References: <20190201124615.16107-1-indou.takao@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190201124615.16107-1-indou.takao@jp.fujitsu.com> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Feb 01, 2019 at 09:46:15PM +0900, Takao Indoh wrote: > From: Takao Indoh > > Fujitsu A64FX processor has a feature to accelerate data transfer of > internal bus by relaxed ordering. It is enabled when the bit 56 of dma > address is set to 1. > > This patch introduces this acceleration feature to the NVMe driver to > enhance NVMe device performance. This has absolutely no business in a PCIe driver, sorry.