From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932734AbdBPPpj (ORCPT ); Thu, 16 Feb 2017 10:45:39 -0500 Received: from mail-by2nam01on0066.outbound.protection.outlook.com ([104.47.34.66]:35920 "EHLO NAM01-BY2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932364AbdBPPpb (ORCPT ); Thu, 16 Feb 2017 10:45:31 -0500 Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=Thomas.Lendacky@amd.com; From: Tom Lendacky Subject: [RFC PATCH v4 15/28] Add support to access persistent memory in the clear To: , , , , , , , , CC: Rik van Riel , Radim =?utf-8?b?S3LEjW3DocWZ?= , Toshimitsu Kani , Arnd Bergmann , Jonathan Corbet , Matt Fleming , "Michael S. Tsirkin" , Joerg Roedel , Konrad Rzeszutek Wilk , Paolo Bonzini , Brijesh Singh , Ingo Molnar , Alexander Potapenko , Andy Lutomirski , "H. Peter Anvin" , Borislav Petkov , Andrey Ryabinin , Thomas Gleixner , Larry Woodman , Dmitry Vyukov Date: Thu, 16 Feb 2017 09:45:21 -0600 Message-ID: <20170216154521.19244.89502.stgit@tlendack-t1.amdoffice.net> In-Reply-To: <20170216154158.19244.66630.stgit@tlendack-t1.amdoffice.net> References: <20170216154158.19244.66630.stgit@tlendack-t1.amdoffice.net> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [165.204.77.1] X-ClientProxiedBy: MWHPR10CA0014.namprd10.prod.outlook.com (10.172.48.24) To CY4PR12MB1142.namprd12.prod.outlook.com (10.168.163.150) X-MS-Office365-Filtering-Correlation-Id: c490bf7e-07c1-449e-baa5-08d45682d499 X-MS-Office365-Filtering-HT: Tenant X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:(22001)(48565401081);SRVR:CY4PR12MB1142; X-Microsoft-Exchange-Diagnostics: 1;CY4PR12MB1142;3:fuI9HVxxy7MMJiTk5J+d2kkSaXqqR8qc9fgtKkyJ4YOKju+YboGTQCr2hCm++bP2WtU9qLgf4DdN5QffTlRfkqW1FVIx+x+2MAjOMKHP23cWVmvQo5+X1iUCD0TLw+B2lEoZB3aYjNxw8EuqUeNBkAw4wXZBbHTsm9Nlgi7i1jLPUh7jcb6hWMCyLWqn6cdTKcdoVGUEWZ2Od4LhM5/ysYuPeQCW4+pe3sJz5f4mWz4kLnNyamWsMvcNaX5+jAh275SCpRZCHjdvufeOer+71daOoxpV/UYzHltT/HZsI6o=;25:OD0z5mQ2It3W/kg1wDBbrfHUNnelu+YOWOU/IGtjoiM1Lyk72mCKiC1+J+WM3ii5gKGkVcVvgdFMUINiaUqorqgXDlPZX81VJIsF8EHfGLs51+ziRJOw5eE+Q07+IBaDDeMGWTO9Jr75bFA0psKtJkBTUnURsJUS0mItELsvz/eEi8axoTLEqdm+NJ7pUq5gXByWZU2xB2PU9A7VWWjaOZcIX5ZR1mUdQNsL/NOyP951Whd9MgBuGCi41VDZK6mHZOeYKtA0G8nbYY52GD61FlctoY2tW2vT0/+yyLkTg+97Q1F3Y3B5I/CjSh0RKv63JxJBlmwk8mzHZzicwCFX92bKqGskimz2LT1xINrHBgrVRYAALDPe8JkdzzJtSBHvWncIHIr7YEQKlKC3HIzM8EEMJua1c6EAne0ARV/1ZLA7crZYnoavOQ3dFca3q23SIC/bNp7PsvOUp+oB/2ebRQ== X-Microsoft-Exchange-Diagnostics: 1;CY4PR12MB1142;31:Mil/a82d0n7hkP1ETzUUNTpHXq5tlpZRm9awSSlEtSH5ilHfV3kDKK8Y25uMS14xIR+7xNa+iXc5GzAH+JH5eOBqxS9N5c/wGpVLMVqvcpqW7sX3Y9YY/ZkdeIvndtmsWeOObljK/grac9IlpnEvw0HFRvsAQeaNQAhB/g+Ju94uiH9DON2Vs+oZnQZiJIn8eE3CPYumlXXvoEtfEeCg9mhnV14HTFFSQp9WBR42UDmFD12ZSlRW9AZ+20ZnfQZ0;20: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 X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:(767451399110); X-Exchange-Antispam-Report-CFA-Test: BCL:0;PCL:0;RULEID:(6040375)(601004)(2401047)(8121501046)(5005006)(3002001)(10201501046)(6055026)(6041248)(20161123555025)(20161123562025)(20161123558025)(20161123560025)(20161123564025)(6072148);SRVR:CY4PR12MB1142;BCL:0;PCL:0;RULEID:;SRVR:CY4PR12MB1142; X-Microsoft-Exchange-Diagnostics: 1;CY4PR12MB1142;4:u2Y7RpT4ZE0Ahhv8QcnArfVh3aU1itFud1gMVKm9KXdegsh1tKYIQ6UtyPUlVJwdSt6CyccUsGz3Rp1k/5lG77iboSvtxcVHujKDT0FNJAIWx/i6+VSeS5Letxrbg0cQBaeT3tofCesEhZs0WI8aNJaZMIVgFk5C2ihLP7k10/0qmV2xBr8/6ezSHMrXYxYyboyDrzL5mvD9zr7FqRNqEuayaHmcdtVKzfg63tDgENPV4fWwlxabzudEvDIQmuc4xxM/C3CYTgjjkyPhz2HRteEB99apR8WWu4GKz5ziAqaSPQiuY895L53ZI0ziDRNN+ExiN+7BVXmD6GiKE7C4YCkHXnpB+dIY9zCvjZR3kSYHQBgksiKzloSmuvIFIc1lb9D6S+6/wJ7Y5hA5a8qIQuTsGETug6/yd6Rm89Unq8kStlXJ3muocmwgZ6IgYod8M9/4LgQdOtOPqFl86ROgctnQcxln5fbZupsgQBeKeZb1U9d7JgFsCIA2QiT2LNKKocHhwaAmomm1Mox0BMWIr1AaoR6SDbfy9pU+4Z9DjmvAccECN9z+O84ezCKyS9K6YIh+n30Q3IV9wS1DzrKJljm0c04DT0X5pH+WmPxANdURPENZGbxNvlcKg9TrRYX6bOgYwZWklCUa/3WI+gyQ7DzfadG1qnSMAlNgm7gtqb4= X-Forefront-PRVS: 0220D4B98D X-Forefront-Antispam-Report: SFV:NSPM;SFS:(10009020)(4630300001)(6009001)(7916002)(39840400002)(39850400002)(39450400003)(39860400002)(39410400002)(199003)(189002)(97746001)(23676002)(105586002)(101416001)(106356001)(4326007)(25786008)(33646002)(92566002)(50466002)(6506006)(1076002)(66066001)(2906002)(53416004)(42186005)(47776003)(68736007)(103116003)(76176999)(2201001)(3846002)(6116002)(50986999)(7416002)(6666003)(2950100002)(97736004)(4001350100001)(69596002)(83506001)(8676002)(230700001)(305945005)(86362001)(81156014)(189998001)(81166006)(5660300001)(575784001)(38730400002)(9686003)(54906002)(7736002)(389900003)(55016002)(54356999)(53936002)(71626007)(217873001);DIR:OUT;SFP:1101;SCL:1;SRVR:CY4PR12MB1142;H:tlendack-t1.amdoffice.net;FPR:;SPF:None;PTR:InfoNoRecords;A:1;MX:1;LANG:en; X-Microsoft-Exchange-Diagnostics: =?utf-8?B?MTtDWTRQUjEyTUIxMTQyOzIzOlRLQTMwdTZBWWlFU2NQc3k3cVlKaU1nMnd3?= =?utf-8?B?TEVzMXVTTnBNQkZ0d1lyd1l6ZG1rYWc5QmlkTDRWNE41bUtvbXJtZ2w0Y015?= =?utf-8?B?WU5GWmZGZWtydTVMS1RXTjdrL1lTanVXck1CQzR1WmNhZ2xSZEpLaVc3Tlhy?= =?utf-8?B?eEl4VHBRYW9XcDlua2tiVTM5WmI5Wm1vRWxCNGZwa3Jxam9PNVVXMnJJUEVR?= =?utf-8?B?VGRGUlN5K0p6YzFiMVZwYjJiWjE3WHpMYzBFRDNVaUdDUHpDZ1hxT0tLZ2pZ?= =?utf-8?B?UnlWd2RYNloza2U1WElzQjRaK1ZodCtvR3VGclY0N291S1BmQzJEL21jU0Zp?= =?utf-8?B?Y2o3YU0reUFhOFp2SWdKUmo1T3R4TVgySk5EZzQ5OUFzMCtIaUhaUTVCcnNs?= =?utf-8?B?NklYdVBLVkoxcjBzc3V1Vm15NGRicGpXNXBuWk8yUnExd1piWG04UG95czZr?= =?utf-8?B?SzRlSlUrYUlEK0d0Z3Jva3B3aThJR1BIQXZiRUtVS0tTOGdqNFg2bWR4cU1w?= =?utf-8?B?WEVoejFhTmVCclJLenUweVF5VkR3azN4RDQ1VUVodER1WVV2UytwZ1F2b2RG?= =?utf-8?B?ajVHbmJkdGs2K0hHZitGMDN6MllQc0tHbHZQNHYzbW1tRE5zSXZEMlRCZWFL?= =?utf-8?B?S2FRcklMQ0ZGTGh2a1hzc0lXWnp3WFZza2xsbWszd0laRFNpOExRR1E2SUhn?= =?utf-8?B?MWJwWXpjbmV1Z0dFemZwa1JFTFVKTmVRclB1QXBNc1NyUnlxc2VXd0NQcjdM?= =?utf-8?B?Tkl2QmZ1U20xSjRmS0FOeFZ1YWVXb2NpQ2x2MnNkVnJENHhyOVhpOHlEc2lC?= =?utf-8?B?dmxRVURLVmtOSzRiSHdnRkw1UjdGdDJFeEdmbmhJaVZWZmlXM3RzOGU4WTND?= =?utf-8?B?RVAvSGlySURvSHVTQ2dtNEJDRkhXazRTZVdqTVo5MFZFYndlRUl2V3R5aWpR?= =?utf-8?B?NjZjNUpITWpjdit6cHFvMlJNQ1JnNG0yTzdQeUoydTFaUHFqTmkweDhiOEZ5?= =?utf-8?B?Mkt6RTA5cDhwZ1BQQ0lBeC81NG1ybDFNSldENWg1YTBSU2F5ejBoYjd6ajRQ?= =?utf-8?B?TTN2RS9sWnZodWtHSENTaHdHSHlRNUYwMXNXaHROUVI2VnVsVmVrblQvSzhY?= =?utf-8?B?Zjk1YkpaV3ZCdXM0ZURRamp1U2crQWsrWEJHOWtjM2FLMmtFczZnQ0tCeEJl?= =?utf-8?B?RXk4YXErRzlnSzFib3I3VnN6bUl5OFpLQzVMcC9DUmRONmJ0ZnY2ZnBCa0VX?= =?utf-8?B?M1hVK1ppSTByTHh2NHRaSnE2RlRRY3VvSFJyNERDNUVrOU1EaXlFOExZZDN3?= =?utf-8?B?SnRyM1NkUzgvL2FvMURUT2xZMzJUaVRRV09mKzJreTU5anhGREsrRTRRV3V2?= =?utf-8?B?ZCthSzlCMVR5bU55aXVLR25XZUd6YWkvcTk1NUNUNFBCMVg2SENJVGs2aXFH?= =?utf-8?B?MUc3Yks4OWFYMzlFQkh5MjV5QU9xQ2hZS1UvZFFIQVhpelgycEdPVmRuMVEw?= =?utf-8?B?d3gzdkVBV1RNakc5OGc2cXlnY3E2dXlzWHlORFZlSlJvMVZudjk5aDh6Y0Vh?= =?utf-8?B?VWcyR1VJV0ZwYVNrTE1YQ1c2bkovK2FYMHlybmhMelhCZ3VMVVh5VTZMWStX?= =?utf-8?B?bmpqNkl0bGxWZXlndUJZVmVQdlZPSnhiWWtCQmJMdFZ4MnNrR3phSGcyWjIy?= =?utf-8?B?U1hidUNSMDJDK2dRelpqaUNYZ0FseVY4eTF1YXEvNjQ3cHREY1JKMmFxclY4?= =?utf-8?B?ME5BTGtsUG9RRjNvR3o3aEZTQ3JjYjZEZUNObzNMek1lOCthMEVpcVN0MVVq?= =?utf-8?B?ZllUUW14dU5PbFFMOUxYanhnR1NsVjl6Q0xhcTZuRVJmN2lsZ3QxeWNlQW5X?= =?utf-8?B?c2tqcllzSDlIU1ZUczN1N0hXRCtRWU4wRXRnREVaeTNITEJiWWhtUGZHQXZV?= =?utf-8?Q?SHKZ2ZGfbJYfOMvpdPxhlEGNz4B3j8=3D?= X-Microsoft-Exchange-Diagnostics: 1;CY4PR12MB1142;6:+/uAojwyoMMhaAGpydrOpEpGH5+52QiqjNwF5AQtYE9IiJnlIewgMSe5heDdbmCRjnpQWZtilbMsJcVbF+Qe1j3g8NMJ1n6SLhlO9ytPNRF4596/pCZFsda4neetql92J6y25zes5uB+EVULZYWu4g3Fdj32ubKy4D5BV/CA707qhBKMgHuTmj14ccyw9z30haqs4iuuNcr7pKUTizMSx261IOKixhrzvnr18Zf4uNcj1gxIxmiMeW93t8zZJQFsrvbcH+0CJ8tTWqVVpEnKvoD7toj9iNhyBQweyInl77SQ4aOd5rNmSjem2jk9+TtWOgxWK49IEcz83UPyImPWrSjA4T1CoTaoie1M8vJAdp0Tpiy/p2lFb9iOQRPb8k+GwLYRTX4/ZGPGAY1UftvZtNEiJEELIBClZ8jDL8LxtSM=;5:TkZqsxVow2YcZxY/OZqGwPoSRyMmim07gniaicNShgyyVnPt9abo7K2Ejjf+jNg9UocmFJBKEk7DsfMHSbys4yDxNskeddASYFtjn6TEkh/wij9DDpW1aK65lr7FdezfLNp2umCyM6w2rOIuZWoOsg==;24:CDxigbiAmdR3h4W0UAij/J/AlnKn6OdDNDc1QU8gu8BnIsmVpjlCzMPVWgQKsjbSrHlY2piOpt34m61z1BKrMslr4oj269xzGuX5RLIFWGY= SpamDiagnosticOutput: 1:99 SpamDiagnosticMetadata: NSPM X-Microsoft-Exchange-Diagnostics: 1;CY4PR12MB1142;7:koL2M4CcHCsfYgyHi6NJBm9HAM79sLWy/VlhJmT6f85V7i204SoDVK1LLQPvSPOYl6RoaikjRkefN6Hc8JflQ3b3UkR8q7uAcG+mgtgba6FTBxKIVKikRJq9rD5J9kuORaZeIAjwIsT2/s51Wrymp+EQbjWR6k9/Obfflcgzc2ugxVrgCq1QGpCpSiPtYn0RJ4qtuQnId2QdSDaY8YWjrWNVXp2jFKUmw9mkb9IIoljGdxV/k1D9dXGHwG+ZVDXCnHfC1ndWcQmwiygbJpwCfd6rQMJKrJHacJBnLGcrZZa3PIijY5XA23RFr6YE0R12KZvMOQj8/6JIv2Y7PQzAyA==;20:XUva0ClKdD4/hT9sNizR/qT67rXxTLPFg49tmocXYoqMmPPalXrVWE6JbgwyTcdo19QW684maAUGFCzcc7M1lILL9sOTrxxAknHwKFleDfc+xGLth8kqMegBe8kWlbR9mYkUS15BrKSHxVPqDqQ9dUNB/VSPlJWuzxswpHevR65dlVoCHUyj2e4bH/kdRsSKW7u5OLSYACwwY76NxiDmXKAVKp+hLou5LNcM3ht7n2CfIgVIQl2cdJoyw/08F0Lz X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Feb 2017 15:45:25.4514 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR12MB1142 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Persistent memory is expected to persist across reboots. The encryption key used by SME will change across reboots which will result in corrupted persistent memory. Persistent memory is handed out by block devices through memory remapping functions, so be sure not to map this memory as encrypted. Signed-off-by: Tom Lendacky --- arch/x86/mm/ioremap.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c index b0ff6bc..c6cb921 100644 --- a/arch/x86/mm/ioremap.c +++ b/arch/x86/mm/ioremap.c @@ -498,6 +498,8 @@ static bool memremap_should_map_encrypted(resource_size_t phys_addr, case E820_TYPE_ACPI: case E820_TYPE_NVS: case E820_TYPE_UNUSABLE: + case E820_TYPE_PMEM: + case E820_TYPE_PRAM: return false; default: break;