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: 1237610 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256 header.s=google header.b=FRxKsOeY; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48JMxc5cjKz9sPF for ; Fri, 14 Feb 2020 03:52:20 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728339AbgBMQwU (ORCPT ); Thu, 13 Feb 2020 11:52:20 -0500 Received: from mail-wr1-f68.google.com ([209.85.221.68]:33060 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728367AbgBMQwT (ORCPT ); Thu, 13 Feb 2020 11:52:19 -0500 Received: by mail-wr1-f68.google.com with SMTP id u6so7590235wrt.0 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=fJvl8EyLYi3qxK6sif6WDdh0CRQKFQAL2M8OQuNqLNnwE2oWPbygwFTD/rup0fVhpR gikKBNHMOXHH0GRessHgLwwN6r5q5asjCvKl2AY77UDWFPybGY14CayVatzP1FcOOqLq 5x7ds1rWH58dDwC9Mza3QdFjSSVD01ykytBXiivFUVJHmiqiR+8f2FNEyni3MvK8Z+Qd 4LALTUMFjk683XHe6B8zIyFxA5ijTskIRoy55rBFkieejhZhuUZdTBcBL1rPua56NGNk olwIJTWsW5sh8wcqlOo2us7dtVXzjjrfp1x+dqcAvLHPdqqTg8mmOBk3w0TXJ9DyURyb VgAw== X-Gm-Message-State: APjAAAUJWJ75XzFODA1VLQwgzFjF84sI2ab1ArcFGMxPICU9mVUPxMdZ gqbkePuwnU5neN8IDu+t//28Ig== 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: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@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.