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=-14.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 059FCC56202 for ; Wed, 25 Nov 2020 14:05:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8EAA620715 for ; Wed, 25 Nov 2020 14:05:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="G8DCxn5J" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729857AbgKYOF1 (ORCPT ); Wed, 25 Nov 2020 09:05:27 -0500 Received: from mail.kernel.org ([198.145.29.99]:36186 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725792AbgKYOF1 (ORCPT ); Wed, 25 Nov 2020 09:05:27 -0500 Received: from localhost.localdomain (236.31.169.217.in-addr.arpa [217.169.31.236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id BBAF3206D4; Wed, 25 Nov 2020 14:05:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606313126; bh=o/3qU9yUVsMRXBPb0/qlY5lVdmNZJsg8udd9M106/9M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=G8DCxn5J/JaU/e93TuntnK4oh0Kn/xsPcKugLOLB+XfEZqAVNtLJt4J7FrmsO4IUe goFFx0ywrjqH6A070RdD+kHWfNDB9KqRmCXZzG3UiO/RNLy4yPLrCG3ChyEIX6BWsF s0CfmZ/VDxamoqXudWTtMmtU4s03HAkWJG3iAXH8= From: Will Deacon To: Lu Baolu , Thomas Gleixner , Ingo Molnar , Ning Sun , Joerg Roedel , Borislav Petkov Cc: catalin.marinas@arm.com, kernel-team@android.com, Will Deacon , x86@kernel.org, tboot-devel@lists.sourceforge.net, Adrian Huang , iommu@lists.linux-foundation.org, Ashok Raj , linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/1] x86/tboot: Don't disable swiotlb when iommu is forced on Date: Wed, 25 Nov 2020 14:05:15 +0000 Message-Id: <160630605367.4096500.10722779964348157570.b4-ty@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20201125014124.4070776-1-baolu.lu@linux.intel.com> References: <20201125014124.4070776-1-baolu.lu@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 25 Nov 2020 09:41:24 +0800, Lu Baolu wrote: > After commit 327d5b2fee91c ("iommu/vt-d: Allow 32bit devices to uses DMA > domain"), swiotbl could also be used for direct memory access if IOMMU > is enabled but a device is configured to pass through the DMA translation. > Keep swiotlb when IOMMU is forced on, otherwise, some devices won't work > if "iommu=pt" kernel parameter is used. Applied to arm64 (for-next/iommu/fixes), thanks! [1/1] x86/tboot: Don't disable swiotlb when iommu is forced on https://git.kernel.org/arm64/c/e2be2a833ab5 Cheers, -- Will https://fixes.arm64.dev https://next.arm64.dev https://will.arm64.dev