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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIMWL_WL_MED 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 5BA17C070C3 for ; Thu, 13 Sep 2018 00:28:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E1531206B8 for ; Thu, 13 Sep 2018 00:28:56 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=kernel-dk.20150623.gappssmtp.com header.i=@kernel-dk.20150623.gappssmtp.com header.b="0rxsp9lR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E1531206B8 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.dk Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726570AbeIMFfw (ORCPT ); Thu, 13 Sep 2018 01:35:52 -0400 Received: from mail-pf1-f179.google.com ([209.85.210.179]:32889 "EHLO mail-pf1-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726204AbeIMFfw (ORCPT ); Thu, 13 Sep 2018 01:35:52 -0400 Received: by mail-pf1-f179.google.com with SMTP id d4-v6so1823405pfn.0 for ; Wed, 12 Sep 2018 17:28:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=KYTP+i6Nb8Ei8Y0iMv+E9xNuLMy4yM5vbYScmXiTZxc=; b=0rxsp9lR9mcPK2hoIXVUAB2yAKHqXD0got4r0YViSTZv+YPX2icRFwSoZ4+bU/yXGp QgpvtGElmC/pEd/cX2MWY6DfL6sXIkIhSQ4HHCN2soA0AfOIR0JUt+p62xyPMuj7c3qy lxFnFfPAW8vPQwJxPg6e+R9a+63MrjWB5jweyjaydvf+LrBwXaW0erytqmNlPUXvYq8v nlUekp4/N9MSG19f2TrDuYYplYWJsVF1AqapsD32BpYXy/6gQd5ikirYfFxDI6iEfb6i AKNz+/+3tNdYcevxiYvKnwH+aNuBfqaIHnzLTf/+qPUEu1MPrkRw1F6f131E021B4ozJ XhRA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=KYTP+i6Nb8Ei8Y0iMv+E9xNuLMy4yM5vbYScmXiTZxc=; b=Tm54zQScgPDwXDjWieudor92hngwt2H3wayQcBatOFIO/VZ3cEAjy2H1fBN/t5pxuQ hPsnj70GPrDd1GhbfjDRkdp+5L6mPv4XE1tqzec8t7RQuiokXg7gEOZUNnmqVYECdVUP 7NuJydv5ZaxkRjLLGQGyIhseCDEOMFf+zPvwU80MCo+n8SaXpnGgQPsZ1TzgaWXGsDY9 nm0KJV37VoM24pKQUYfZr2bneOF31cFYqurH1DlmldM6vvcVCBKYPSurv1E6adePNyLl aOSOXbfPdElxpALUHfNUxBhfdD9wMmBv4W+tq1tFej4iEgxDbYT1NcHN27yvF5So6SJI jjmQ== X-Gm-Message-State: APzg51CI4kYTNg6EzvIpfYqXF/V42oiW4BHEccphzoBn4M0P/viTwxlv y0slAlR7afBu9hx6aTKZL1W8jg== X-Google-Smtp-Source: ANB0VdZlSQNhOneFnB6BdlyhcicQ9zgj15gJxtcFaBW4dYw/m+gygFj2wY5LTI4xtI++GQ8M3P1bqg== X-Received: by 2002:a62:9402:: with SMTP id m2-v6mr4798119pfe.3.1536798533985; Wed, 12 Sep 2018 17:28:53 -0700 (PDT) Received: from [192.168.1.212] (107.191.0.22.static.utbb.net. [107.191.0.22]) by smtp.gmail.com with ESMTPSA id z19-v6sm3211921pgi.33.2018.09.12.17.28.51 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 12 Sep 2018 17:28:52 -0700 (PDT) Subject: Re: [PATCH v6 07/13] block: Add PCI P2P flag for request queue and check support for requests To: Logan Gunthorpe , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-nvme@lists.infradead.org, linux-rdma@vger.kernel.org, linux-nvdimm@lists.01.org, linux-block@vger.kernel.org Cc: Stephen Bates , Christoph Hellwig , Keith Busch , Sagi Grimberg , Bjorn Helgaas , Jason Gunthorpe , Max Gurtovoy , Dan Williams , =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= , Benjamin Herrenschmidt , Alex Williamson , =?UTF-8?Q?Christian_K=c3=b6nig?= References: <20180913001156.4115-1-logang@deltatee.com> <20180913001156.4115-8-logang@deltatee.com> From: Jens Axboe Message-ID: <0118d3d8-a2f5-047f-6627-04ac3d0371ad@kernel.dk> Date: Wed, 12 Sep 2018 18:28:50 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.0 MIME-Version: 1.0 In-Reply-To: <20180913001156.4115-8-logang@deltatee.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 9/12/18 6:11 PM, Logan Gunthorpe wrote: > QUEUE_FLAG_PCI_P2P is introduced meaning a driver's request queue > supports targeting P2P memory. > > When a request is submitted we check if PCI P2PDMA memory is assigned > to the first page in the bio. If it is, we ensure the queue it's > submitted to supports it, and enforce REQ_NOMERGE. This changelog is no longer accurate. -- Jens Axboe