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Tue, 8 Sep 2020 03:38:16 +0000 Subject: Re: [PATCH 0/2] iommu/amd: Fix IOMMUv2 devices when SME is active To: "Deucher, Alexander" , Joerg Roedel Cc: "jroedel@suse.de" , "iommu@lists.linux-foundation.org" , "Huang, Ray" , "Koenig, Christian" , "Lendacky, Thomas" , "Suthikulpanit, Suravee" , "linux-kernel@vger.kernel.org" References: <20200824105415.21000-1-joro@8bytes.org> <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> From: Felix Kuehling Message-ID: <61776061-9f26-a3bc-9776-0d1772e2b266@amd.com> Date: Mon, 7 Sep 2020 23:38:14 -0400 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Content-Language: en-US X-ClientProxiedBy: YTXPR0101CA0037.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b00:1::14) To DM5PR12MB2407.namprd12.prod.outlook.com (2603:10b6:4:b4::24) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.2.100] (142.116.113.11) by YTXPR0101CA0037.CANPRD01.PROD.OUTLOOK.COM (2603:10b6:b00:1::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3348.15 via Frontend Transport; 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X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: d84e3572-54f9-4580-2fd5-08d853a89efc X-MS-Exchange-CrossTenant-AuthSource: DM5PR12MB2407.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Sep 2020 03:38:16.2382 (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: 61Oy3QEPGJuyuw4zXgGlRbDOJAclzbQqfioiuYHERaYeV+HGKk4X3JNugLWjkpyyTBAGiBKr3EobNUad+/ESgQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB3339 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am 2020-09-06 um 12:08 p.m. schrieb Deucher, Alexander: > [AMD Official Use Only - Internal Distribution Only] > >> -----Original Message----- >> From: Joerg Roedel >> Sent: Friday, September 4, 2020 6:06 AM >> To: Deucher, Alexander >> Cc: jroedel@suse.de; Kuehling, Felix ; >> iommu@lists.linux-foundation.org; Huang, Ray ; >> Koenig, Christian ; Lendacky, Thomas >> ; Suthikulpanit, Suravee >> ; linux-kernel@vger.kernel.org >> Subject: Re: [PATCH 0/2] iommu/amd: Fix IOMMUv2 devices when SME is >> active >> >> On Fri, Aug 28, 2020 at 03:47:07PM +0000, Deucher, Alexander wrote: >>> Ah, right, So CZ and ST are not an issue. Raven is paired with Zen based >> CPUs. >> >> Okay, so for the Raven case, can you add code to the amdgpu driver which >> makes it fail to initialize on Raven when SME is active? There is a global >> checking function for that, so that shouldn't be hard to do. >> > Sure. How about the attached patch? The patch is Acked-by: Felix Kuehling Thanks, ? Felix > > Alex >