Received: by 2002:a05:6a10:22f:0:0:0:0 with SMTP id 15csp3147577pxk; Mon, 7 Sep 2020 04:46:04 -0700 (PDT) X-Google-Smtp-Source: ABdhPJz2z2BFEU8ydxMxHvDB/i9eYGtDfH0VOpNdB0dKT4nDgUqrMwc1utqLl7KQtiZ8DrPeasOf X-Received: by 2002:aa7:dd8d:: with SMTP id g13mr21875248edv.324.1599479164190; Mon, 07 Sep 2020 04:46:04 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1599479164; cv=pass; d=google.com; s=arc-20160816; b=THV4a95JrdF7oS1WR6YM570DvdaFIn7dYaeb5veZApOOI2KAVyjFjiTWsHLXfEEgdp hIpVjTVrfKfG2uQiweDuaYvoCtcCu3HKC+tThJ84Mt6+WrAZdu0IuYt+zPKwr0eAgs8U NOl0G4bOMxnn0F4ntpxyxvmOfbgi4NYl0xHBK6xxf6Fz9sg4wlF7g540kMzAfaSal6rY N+VkR6eQo9ag4fPTSWMXJIT/A3rXa/4M7g8vLWN7+4d9qkbe1nMSzqg9UDqdqTBMLU1A adzU2To0CVwkI/qzKhuRAdNWI4JVrDbT2WP1otVGODd11FEWKeRQ0EDUcVq85oSgeu76 I/0A== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:content-language :content-transfer-encoding:in-reply-to:user-agent:date:message-id :from:references:cc:to:subject:dkim-signature; bh=G06hW8FfUbp5DI8xzd5xPt5Uu/cMM1xC+yNnu8X/TdE=; b=lWCeEeO3yxupnYnosEy7jzYRdFOt2tZwaLUY/7aYy2AWAezFDNxvAD1GL1uYdU251y ZsmMakdv+hqCKc76l7mkOc1AvEAPgybuJuNG5MxN7I+wifme93gZrNNThWpVmHcHNdqH yuIL6fkaB2MvBC2wbTL+ALpqPzR97+RlHyYTyKJ7WEmVdwbbEzjYxvlv60YHjfDFW0hC U/X+LC7qt2jV0UiUTHhdFyKxnQ7UUMNiGQQyUzBNqoVfzCo77DgReEe7T2YUm1+Uq6vx z2wkB1EySJQcEo9IxoMTkD6EBWek24moQvJq/RLCat+/rzzPnWOimDppaav1C1frkWZZ wylA== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@amdcloud.onmicrosoft.com header.s=selector2-amdcloud-onmicrosoft-com header.b=j8sCN6WE; arc=pass (i=1 spf=pass spfdomain=amd.com dkim=pass dkdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id z3si1591374ejw.415.2020.09.07.04.45.41; Mon, 07 Sep 2020 04:46:04 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@amdcloud.onmicrosoft.com header.s=selector2-amdcloud-onmicrosoft-com header.b=j8sCN6WE; arc=pass (i=1 spf=pass spfdomain=amd.com dkim=pass dkdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728996AbgIGLmA (ORCPT + 99 others); Mon, 7 Sep 2020 07:42:00 -0400 Received: from mail-dm6nam12on2071.outbound.protection.outlook.com ([40.107.243.71]:45217 "EHLO NAM12-DM6-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729015AbgIGL0W (ORCPT ); Mon, 7 Sep 2020 07:26:22 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=QoTtfg9xAtE1rnEDShWPlE0BTnU580fGEiDziLGuGU9HVQZoF5n6y+QilUkA09M5PPREK0VCoFoctcuYDS2XYn/TkqX9FJXiuwZu5JZPJEWvbAMwBfy4EUaAu8kU/oy2wh/NMI4ujXtjbX9/6u/4vhLxd9G4h7hYo8KYIfpb37qWKb/OPAsjyEeXWWukWWo3wmsLJ8cE8qZmX/XBnD1BXXlQbIgMdTiTn0R7KtKKCEpKK5Y6bycYT8MJj/dqu+5vGMZ7yJI+iZPaDzjWtmFKTdL3z9Fkoq8sSd8ooAG3m+Ft5mmUk6O/cPR/SJ1kiL+DUN55ZwW5xVDIAur4rS5vsg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=G06hW8FfUbp5DI8xzd5xPt5Uu/cMM1xC+yNnu8X/TdE=; b=VM65JpVrj0vLTFwYQ78jd1DT+C/Vnic6IPZflfuv3FcZTr/Y4Hfv0XSi1JUZsRHj/kjmSKd5HuaiuYMa7yzFIFGJKlSPrfroBQQcoJa4vMrF2kwsBNZjzUjrx7shGoyGBczTLMy5o2PKtIapwTffaP/vL6hgUCnuZ/EWUn75qDmJI0qzWBkZfFmyB2Bx+Mo1cHVzOondqaENkJZm8GrAUxlhqqcFtmDMc+Mxo547P89gOxNovBQrAPfOHCqZUiia9NBZAkp9oPOXP5weBwVCYmP4wjSzDSqK6Zm2DyLY5gnGCXau0D4FHg6P9T4P4UDg3l5bUNTBwQU3GwGx6msBjQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amdcloud.onmicrosoft.com; s=selector2-amdcloud-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=G06hW8FfUbp5DI8xzd5xPt5Uu/cMM1xC+yNnu8X/TdE=; b=j8sCN6WED5NS81KyChxU1bNawj5NRg++XwbsG+nIBA5MLydXPmTLXlxBt0W7sJLxf3sfUBYgM/i3M1T2VO9dk0pST3BAnr673pLNBn8ts2IJUc1PlZ1zqaXmXDxGRdQfi6xx1kD2VSv/uFgco+hDv5aXFeeYVogEB4c9B9Ioimk= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=amd.com; Received: from MN2PR12MB3775.namprd12.prod.outlook.com (2603:10b6:208:159::19) by MN2PR12MB4208.namprd12.prod.outlook.com (2603:10b6:208:1d0::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3348.15; Mon, 7 Sep 2020 11:10:22 +0000 Received: from MN2PR12MB3775.namprd12.prod.outlook.com ([fe80::f8f7:7403:1c92:3a60]) by MN2PR12MB3775.namprd12.prod.outlook.com ([fe80::f8f7:7403:1c92:3a60%6]) with mapi id 15.20.3348.019; Mon, 7 Sep 2020 11:10:22 +0000 Subject: Re: [PATCH 0/2] iommu/amd: Fix IOMMUv2 devices when SME is active To: Joerg Roedel , "Deucher, Alexander" Cc: "jroedel@suse.de" , "Kuehling, Felix" , "iommu@lists.linux-foundation.org" , "Huang, Ray" , "Lendacky, Thomas" , "Suthikulpanit, Suravee" , "linux-kernel@vger.kernel.org" References: <34db343f-cd23-09af-3bc5-29b9d385f85d@amd.com> <20200828134639.GW3354@suse.de> <60067932-dbf4-d67b-cf11-4dd2b016ed63@amd.com> <20200828152943.GY3354@suse.de> <20200904100556.GU6714@8bytes.org> <20200907104431.GH16609@8bytes.org> From: =?UTF-8?Q?Christian_K=c3=b6nig?= Message-ID: <63c70551-255f-2df9-af70-7965e80172af@amd.com> Date: Mon, 7 Sep 2020 13:10:17 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 In-Reply-To: <20200907104431.GH16609@8bytes.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-ClientProxiedBy: AM0PR02CA0024.eurprd02.prod.outlook.com (2603:10a6:208:3e::37) To MN2PR12MB3775.namprd12.prod.outlook.com (2603:10b6:208:159::19) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [IPv6:2a02:908:1252:fb60:be8a:bd56:1f94:86e7] (2a02:908:1252:fb60:be8a:bd56:1f94:86e7) by AM0PR02CA0024.eurprd02.prod.outlook.com (2603:10a6:208:3e::37) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3348.16 via Frontend Transport; Mon, 7 Sep 2020 11:10:20 +0000 X-Originating-IP: [2a02:908:1252:fb60:be8a:bd56:1f94:86e7] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 9814f62f-f875-477c-4120-08d8531e9cfb X-MS-TrafficTypeDiagnostic: MN2PR12MB4208: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:127; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: opPKFq9EbNwXNkXfLtGupiSrbVo4BLx6kD2wACBTtJxMXw7rPfHLqCfIVZ1216+y+b0b+JJDjMwPS85xR/XgrMUc1Q5lHBFqI2pu+1zs+n4+NFh8/I4y297pFWPWjL14c++wSzbGWSBYQ0lSZ8ZpcCsxQ6tK/lEqVDn8UrLiefmFYRrMBCefLmti0SaeZznzBt4Iv5x9GzGVBSkQMzdZBFosFT4Dg37wkn8lDaS8Bp+oGXojXce8FKL1tbfpzv+BOwQPCZ/0/15lJRgdT/XHH6QgibK7L4v00/tUBHa2ATpPbmjn9Z3MC8oea/fbqEgdnbXCTOpT1Qkk+Fx5hdnk+uWqdLMCmwiG6fONahLOmDWLMwgKFJa4nKLhlygISEIX X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MN2PR12MB3775.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(376002)(136003)(346002)(39860400002)(366004)(396003)(8676002)(31696002)(2616005)(8936002)(316002)(52116002)(4326008)(2906002)(6666004)(86362001)(6636002)(54906003)(110136005)(478600001)(66946007)(66476007)(66556008)(6486002)(16526019)(53546011)(5660300002)(66574015)(186003)(31686004)(36756003)(43740500002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 9814f62f-f875-477c-4120-08d8531e9cfb X-MS-Exchange-CrossTenant-AuthSource: MN2PR12MB3775.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Sep 2020 11:10:22.3959 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 1jETjDDFtVjDjv2EcRoemDVU8HyeDGctz3+V1RztqtT6u+8rGU5H1IXD15R3EFTb X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4208 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 07.09.20 um 12:44 schrieb Joerg Roedel: > On Sun, Sep 06, 2020 at 04:08:58PM +0000, Deucher, Alexander wrote: >> From f479b9da353c2547c26ebac8930a5dcd9a134eb7 Mon Sep 17 00:00:00 2001 >> From: Alex Deucher >> Date: Sun, 6 Sep 2020 12:05:12 -0400 >> Subject: [PATCH] drm/amdgpu: Fail to load on RAVEN if SME is active >> >> Due to hardware bugs, scatter/gather display on raven requires >> a 1:1 IOMMU mapping, however, SME (System Memory Encryption) >> requires an indirect IOMMU mapping because the encryption bit >> is beyond the DMA mask of the chip. As such, the two are >> incompatible. >> >> Signed-off-by: Alex Deucher >> --- >> drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 10 ++++++++++ >> 1 file changed, 10 insertions(+) >> >> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c >> index 12e16445df7c..d87d37c25329 100644 >> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c >> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c >> @@ -1102,6 +1102,16 @@ static int amdgpu_pci_probe(struct pci_dev *pdev, >> return -ENODEV; >> } >> >> + /* Due to hardware bugs, S/G Display on raven requires a 1:1 IOMMU mapping, >> + * however, SME requires an indirect IOMMU mapping because the encryption >> + * bit is beyond the DMA mask of the chip. >> + */ >> + if (mem_encrypt_active() && ((flags & AMD_ASIC_MASK) == CHIP_RAVEN)) { >> + dev_info(&pdev->dev, >> + "SME is not compatible with RAVEN\n"); >> + return -ENOTSUPP; >> + } >> + >> #ifdef CONFIG_DRM_AMDGPU_SI >> if (!amdgpu_si_support) { >> switch (flags & AMD_ASIC_MASK) { >> -- >> 2.25.4 >> > Looks good to me, thanks. > > Acked-by: Joerg Roedel This is really unfortunate, but I don't see any other solution either. Reviewed-by: Christian König