From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754951AbdGKBlo (ORCPT ); Mon, 10 Jul 2017 21:41:44 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:51644 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751071AbdGKBlm (ORCPT ); Mon, 10 Jul 2017 21:41:42 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 7C96C613CE Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=okaya@codeaurora.org Subject: Re: [PATCH V2] PCI: Do not enable extended tags on pre-dated (v1.x) systems To: Bjorn Helgaas Cc: linux-pci@vger.kernel.org, timur@codeaurora.org, wim.ten.have@oracle.com, linux-arm-msm@vger.kernel.org, Bjorn Helgaas , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <1499439193-16628-1-git-send-email-okaya@codeaurora.org> <20170710230911.GH5610@bhelgaas-glaptop.roam.corp.google.com> <5f5119fd-64d5-5e7c-fa50-54ac6e6a36b6@codeaurora.org> From: Sinan Kaya Message-ID: <70e56020-ec7f-9752-7236-7d4157c07205@codeaurora.org> Date: Mon, 10 Jul 2017 21:41:39 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1 MIME-Version: 1.0 In-Reply-To: <5f5119fd-64d5-5e7c-fa50-54ac6e6a36b6@codeaurora.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org One more question: On 7/10/2017 8:20 PM, Sinan Kaya wrote: > Sure, I can change to blacklist. I'll not enable it unless the device is blacklisted > via quirks. Since the quirk is at the completer, are you OK with walking the list and clearing the extended tags across the tree when at least one device with a quirk is found? Would you look for another solution? I was told that Linux assumes peer-to-peer is possible by default on another thread. -- Sinan Kaya Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.