From patchwork Wed Mar 11 12:45:06 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: 194360 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=-9.9 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, 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 D9983C4CC76 for ; Wed, 11 Mar 2020 12:47:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B08B224649 for ; Wed, 11 Mar 2020 12:47:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="IMq0GOgl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729386AbgCKMrM (ORCPT ); Wed, 11 Mar 2020 08:47:12 -0400 Received: from mail-wm1-f66.google.com ([209.85.128.66]:35183 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729500AbgCKMrL (ORCPT ); Wed, 11 Mar 2020 08:47:11 -0400 Received: by mail-wm1-f66.google.com with SMTP id m3so1978799wmi.0 for ; Wed, 11 Mar 2020 05:47:10 -0700 (PDT) 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=d0rLUPpWc9LKXF0i9+CPpLN+OwQQCuUUQ2gfv2HulHQ=; b=IMq0GOglrv9AJ7IWePlqPKh+g5vEP7KPGWHNuTRmuqqvl++Phj5Ie3+A+QfEKkME3h q0vWho6oLDy9c22giASuCH1G1T6he+iSuHY/0OPrxfchkouzillYMOGGlzBA9bwKR7Yg +I0CgBIjKYUYCNZqgojagWqC+afKYcAZQQapMTNAk/850hRMXduZJO1Etpt2EYWQCcUy n3ofi2ltjHGzGZBjILh2yTVAHr185N6iaj4H1T9AvACvPv+DIvL+M85edL84HEByBf8K uVCJ+BkBjMVx15RAWG7GqnxYs9Z1XwTzh1D54MLnPmoo3LAkRQYN2UwFDW+zLVcZypwF ZfOg== 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=d0rLUPpWc9LKXF0i9+CPpLN+OwQQCuUUQ2gfv2HulHQ=; b=RRb9KZMy/EAoa2TwuIcmycejXeA4K9KWiszYpkhDwlsO4VKHzu+O/+MAR5+phFoxkc NA7W3sCUm7fsPmCCYsMmnJ631vwbgm/zrVnbwN7X1xuRp4Cez89qWk8/xh2C7NdaPNRt tviU+0MfwJaS0bMK6w3OACP1in69RC/+9tpoZbkEx5kH8/O9eyAObv9/uVPXMJtOKyBN q9x4UWH9gN6rMoHoTHzCq/k0fE/JXeRLE/b9Qmu8Gmv7V46WwVU/7Mg/EpNPhKQmCFku 21clP/ozLdJFtDOIobykSEzon+aT26vx6ELvqumthQrPlNKkWeetUWJPntYy3t3Z/IbE G69g== X-Gm-Message-State: ANhLgQ1YEsuOQV7+gOi+bMn7f1AErkp98OvPd4zKhw8VsHquIoT8x/2P IamAA+tRcwKVmnFvrEQLHkiOlw== X-Google-Smtp-Source: ADFU+vtSp3bp4YHfuXWS38IAA5q6tgH8hB5aWJ3nzhD3eOkPVBueydoPmuaFZUj0SnvU9SNNjQlTgg== X-Received: by 2002:a7b:c414:: with SMTP id k20mr3678319wmi.119.1583930829492; Wed, 11 Mar 2020 05:47:09 -0700 (PDT) Received: from localhost.localdomain ([2001:171b:c9a8:fbc0:116c:c27a:3e7f:5eaf]) by smtp.gmail.com with ESMTPSA id c2sm8380020wma.39.2020.03.11.05.47.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 11 Mar 2020 05:47:09 -0700 (PDT) From: Jean-Philippe Brucker To: bhelgaas@google.com, will@kernel.org, robh+dt@kernel.org, joro@8bytes.org, baolu.lu@linux.intel.com, sudeep.holla@arm.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: lorenzo.pieralisi@arm.com, corbet@lwn.net, mark.rutland@arm.com, liviu.dudau@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, Jean-Philippe Brucker Subject: [PATCH v2 11/11] Documentation: Generalize the "pci=noats" boot parameter Date: Wed, 11 Mar 2020 13:45:06 +0100 Message-Id: <20200311124506.208376-12-jean-philippe@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200311124506.208376-1-jean-philippe@linaro.org> References: <20200311124506.208376-1-jean-philippe@linaro.org> MIME-Version: 1.0 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@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 c07815d230bc..3e17ddb76731 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -3610,8 +3610,8 @@ 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.