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=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_GIT 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 59D9316256E1 for ; Mon, 30 Jul 2018 16:19:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CB2E420894 for ; Mon, 30 Jul 2018 16:19:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CB2E420894 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=deltatee.com 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 S1731914AbeG3Ryh (ORCPT ); Mon, 30 Jul 2018 13:54:37 -0400 Received: from ale.deltatee.com ([207.54.116.67]:54542 "EHLO ale.deltatee.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731447AbeG3Ryg (ORCPT ); Mon, 30 Jul 2018 13:54:36 -0400 Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1fkAsk-0005Yu-7y; Mon, 30 Jul 2018 10:18:51 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.89) (envelope-from ) id 1fkAsb-0003aG-Tp; Mon, 30 Jul 2018 10:18:41 -0600 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-doc@vger.kernel.org Cc: Stephen Bates , Christoph Hellwig , Bjorn Helgaas , Jonathan Corbet , Ingo Molnar , Thomas Gleixner , "Paul E. McKenney" , Marc Zyngier , Kai-Heng Feng , Frederic Weisbecker , Dan Williams , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Benjamin Herrenschmidt , Alex Williamson , =?UTF-8?q?Christian=20K=C3=B6nig?= , Matthew Wilcox , Logan Gunthorpe Date: Mon, 30 Jul 2018 10:18:36 -0600 Message-Id: <20180730161840.13733-1-logang@deltatee.com> X-Mailer: git-send-email 2.11.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-doc@vger.kernel.org, sbates@raithlin.com, hch@lst.de, bhelgaas@google.com, corbet@lwn.net, tglx@linutronix.de, paulmck@linux.vnet.ibm.com, marc.zyngier@arm.com, kai.heng.feng@canonical.com, mingo@kernel.org, frederic@kernel.org, dan.j.williams@intel.com, benh@kernel.crashing.org, jglisse@redhat.com, alex.williamson@redhat.com, christian.koenig@amd.com, willy@infradead.org, logang@deltatee.com X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH v8 0/4] Add parameter for disabling ACS redirection for P2P X-SA-Exim-Version: 4.2.1 (built Tue, 02 Aug 2016 21:08:31 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Changes since v6: * Fixed order of operations for device specific disable function as noticed by Alex * Rebased onto v4.18-rc5 (no conflicts) Changes since v5: * Add a quirk to handle the Intel SPT PCH case (as pointed out by Alex) * Warn in the case that we try to disable ACS redirect on a device that doesn't have the ACS capability (also suggested by Alex) * Collect reviewed-by tag from Alex * Rebased onto v4.18-rc4 (no conflicts) Changes since v4: * Fixed a couple documentation mistakes spotted by Randy Changes since v3: * Removed some of the cruft that was copied from the resource_alignment paramater (per Alex) * A number of docuemntation fixes as noticed by Alex and Willy Changes since v2: * Rebased onto v4.18-rc1 (no conflicts) * Minor tweaks to the documentation per Andy * Removed the "path:" prefix and use the path parsing code for simple devices (as it works the same). Per a suggestion from Alex Changes since v1: * Reworked pci_dev_str_match_path using strrchr as suggested by Alex * Collected Christian's Acks Logan Gunthorpe (4): PCI: Make specifying PCI devices in kernel parameters reusable PCI: Allow specifying devices using a base bus and path of devfns PCI: Introduce disable_acs_redir quirk PCI: Introduce the disable_acs_redir parameter Documentation/admin-guide/kernel-parameters.txt | 41 +++- drivers/pci/pci.c | 310 +++++++++++++++++++----- drivers/pci/quirks.c | 78 +++++- include/linux/pci.h | 5 + 4 files changed, 361 insertions(+), 73 deletions(-) -- 2.11.0