From patchwork Thu Feb 13 16:50:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Philippe Brucker X-Patchwork-Id: 204850 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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 21F12C3B1AB for ; Thu, 13 Feb 2020 16:52:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E3F84206ED for ; Thu, 13 Feb 2020 16:52:20 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="FRxKsOeY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728311AbgBMQwT (ORCPT ); Thu, 13 Feb 2020 11:52:19 -0500 Received: from mail-wr1-f67.google.com ([209.85.221.67]:42981 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728316AbgBMQwT (ORCPT ); Thu, 13 Feb 2020 11:52:19 -0500 Received: by mail-wr1-f67.google.com with SMTP id k11so7539644wrd.9 for ; Thu, 13 Feb 2020 08:52:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=UJQuvs9RpncXIyFZgaHy4qfH2MXeX4KRcKSd32KW02I=; b=FRxKsOeYxspq/g5ZXQF5hEOTsVmnm1UDJ/kf7q2GeDWRw12p5AWgkElZS1ols7kw+s dzR64m9v0kLvMIAf98898PxAp+rZRaCMiXSRy4brZInJjJ6/VxxLBWM/9lwa8d1fjk3H yrBRTY7uPwUlO475tyPxQAhFP+xtWiu24oAsL9T1/3ejakQNp4NhRXjorbqBjDQvC2x+ umWUy9HFmYG09ozyz8p/qxPi9s9GL84tQk3qVBpVhVK7pttVl9Or84knSQx1xMAHhIfz CLWA+FU1t1lS2HAZfQlHELEJoCgFDSyhJVnwQLLH58Q5mnxUj/vQkHn9bAHIS8WU9hNU k79w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=UJQuvs9RpncXIyFZgaHy4qfH2MXeX4KRcKSd32KW02I=; b=FkgJtb+vxSfjnk2azo+9RY+BBVr08+DlWL1AoOTHeXOpP6wLd2OQHUwwr10+h6Wvn6 F/5l7HtRc5r+2870hsq0G6xCf0sq2Yh3xaWtbVVMTlr6RjuVRab7LA1UqZCnb3eN5wUV jSz3hQPtbN3ASg3MbIwU4auX5YLX+psaEk2I8vtwOccjAuAJcwSGmesaDr0X2tB8fFgA ZG5aJAsDxldzSS7+Ylygbgb2nLZ74UXz3n/5chsl2WprMSBZ9sJHUx1sZsbrW7kqcX5n 9dgHx/DsWnWF+STfp/qWNQWYjfkFh6V7oYrDr0o78KPAeopDLgOK5pjIfAeVlyMahyed Uv7Q== X-Gm-Message-State: APjAAAXNGsRhcVuNqHS5ibZu5+gO+iLMNgLhrUbS/uTwfHyGdxjM50BB ztJ4TBuTveE4Znrjgg7HRdi2Fg== X-Google-Smtp-Source: APXvYqzeNhwO1ySgCH6GebdW+o3FuDqODOSO5w28TGumAGZvm+dXwumkzW+9YyKVQhWGqXpnMT98kw== X-Received: by 2002:a5d:4b8f:: with SMTP id b15mr22595338wrt.100.1581612736660; Thu, 13 Feb 2020 08:52:16 -0800 (PST) Received: from localhost.localdomain ([2001:171b:2276:930:116c:c27a:3e7f:5eaf]) by smtp.gmail.com with ESMTPSA id y6sm3484807wrl.17.2020.02.13.08.52.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Feb 2020 08:52:16 -0800 (PST) From: Jean-Philippe Brucker To: bhelgaas@google.com, will@kernel.org, robh+dt@kernel.org, lorenzo.pieralisi@arm.com, joro@8bytes.org, baolu.lu@linux.intel.com, linux-doc@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-acpi@vger.kernel.org, iommu@lists.linux-foundation.org Cc: corbet@lwn.net, mark.rutland@arm.com, liviu.dudau@arm.com, sudeep.holla@arm.com, guohanjun@huawei.com, rjw@rjwysocki.net, lenb@kernel.org, robin.murphy@arm.com, dwmw2@infradead.org, amurray@thegoodpenguin.co.uk, frowand.list@gmail.com Subject: [PATCH 11/11] Documentation: Generalize the "pci=noats" boot parameter Date: Thu, 13 Feb 2020 17:50:49 +0100 Message-Id: <20200213165049.508908-12-jean-philippe@linaro.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200213165049.508908-1-jean-philippe@linaro.org> References: <20200213165049.508908-1-jean-philippe@linaro.org> MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The "pci=noats" kernel parameter disables PCIe ATS globally, and affects any ATS-capable IOMMU driver. So rather than adding Arm SMMUv3, which recently gained ATS support, to the list of relevant build options, simplify the noats description. Signed-off-by: Jean-Philippe Brucker --- Documentation/admin-guide/kernel-parameters.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index dbc22d684627..e5fa8d057a3c 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -3606,8 +3606,8 @@ on: Turn realloc on realloc same as realloc=on noari do not use PCIe ARI. - noats [PCIE, Intel-IOMMU, AMD-IOMMU] - do not use PCIe ATS (and IOMMU device IOTLB). + noats [PCIE] Do not use PCIe ATS (and IOMMU device + IOTLB). pcie_scan_all Scan all possible PCIe devices. Otherwise we only look for one device below a PCIe downstream port.