From patchwork Fri Jul 7 13:39:36 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tom Lendacky X-Patchwork-Id: 9830333 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id B34A160352 for ; Fri, 7 Jul 2017 13:41:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AABCA2868B for ; Fri, 7 Jul 2017 13:41:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9D4E22853B; Fri, 7 Jul 2017 13:41:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id BC8F52853B for ; Fri, 7 Jul 2017 13:41:53 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dTTU5-0002jE-I9; Fri, 07 Jul 2017 13:39:49 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dTTU4-0002iO-5J for xen-devel@lists.xen.org; Fri, 07 Jul 2017 13:39:48 +0000 Received: from [193.109.254.147] by server-4.bemta-6.messagelabs.com id 90/F0-02962-32F8F595; Fri, 07 Jul 2017 13:39:47 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA1VSa0hTYRju2znbjuLqcyq+rcxcF1O8CyX9KH+ UGtnFQkQR7FinbbVN2ZlhPwIdlmLeUAwcQrrMtJyCSl6KTMUsUbGESYWiZgTasoshYlrneOal 8+t5z3N7X/goQp4rUVBMppEx6GmtUuJMqoP9jwYqi1MSQ4ru7oio+fGAjEQxfc+WRedRklijT 03LvCRWr0zsSm+NyOx+O0pmoS9B+ciJInEOAb3lcfnImUK4DIF1rJTgBzm+LYLeghWSV0lwAN jsCyIeu+F4GKupJXjsjqtEMH0P8wYC2yXwYnhQwhMivBuqLA8JoeIAzL16iXgswzFQ2t29Fur E4ecNP6U8luNoWOq3rHk98B6oH80RC3pXeFMxw+kprsAPmjqD+d8E9oY2e+VaPOC90La4KOF3 AJyLoKW8UCxk7gfzrxGpIPKCvqFKUsBn4MPq5Fom4H0wkHNW8HaLwNS46NAPSWBh2FnA/mB5t OQomJaCdfW71DGIYWaw2jE8JaGzsNaxkxbMpR0OSxGC4uU+Uhg+iqHujtVh+SsHe7ZNXIICzV uONW8ea95ybBUiHqNDLGO4wRgCw8KCUg0aldqoozXawNCQw0E6hmVpFaOlU9mgy2m6ZsS9im3 c144a7sf1oJ2USOkh+xqbkijfnpp25aaaZtUphgwtw/YgX4rClj7TRQWpT9MzSpD5FXEyVwOj YjKvarTcK1tXAuWidJdF53G0jE2ndaxGJVADyEfhKZsr5AjME+oM/YZt/X2+Q14KNxnidpK7p DMGncb4Pz+LPCmkdJPlFXApLhq9cSN9lisWccU+2cl8sZHepBRZKLYjpn4qIbLNMqGLyqrISt aawsvmj0SED8Sd+zQ5XiM1LSZXJNtWKqpbyiZbu9rnjnsNR8l1dWXZ6oJj1oFhiH6C2lS/J5X 5Hd4jr0+X3Pq8HK9o9nbpdx+qtzUetJ+aPzHlO3Y9IOWbaTwkqa6056Tb+xpbREKYibpw7Y+1 q0lJsmo61J8wsPQ/dWDLlJoDAAA= X-Env-Sender: Thomas.Lendacky@amd.com X-Msg-Ref: server-9.tower-27.messagelabs.com!1499434784!106203386!1 X-Originating-IP: [104.47.42.58] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 9.4.25; banners=-,-,- X-VirusChecked: Checked Received: (qmail 36236 invoked from network); 7 Jul 2017 13:39:45 -0000 Received: from mail-by2nam03on0058.outbound.protection.outlook.com (HELO NAM03-BY2-obe.outbound.protection.outlook.com) (104.47.42.58) by server-9.tower-27.messagelabs.com with AES256-SHA256 encrypted SMTP; 7 Jul 2017 13:39:45 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amdcloud.onmicrosoft.com; s=selector1-amd-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=+suR0f3QJrs6nnkyh+5+qoNt3tgFdQL474fdMdtI9A8=; b=JIhNvOnnqwHDFJ5jKKlJFWQSlPjSPloaMtX0/kTbfuv7FSnYeiCuxLaFYIE1Z38gdXsHcZGzQv8jUI9mlVpA+9fbFQuWrR8li/ygE6i7H1+Ift8qLgBOIo1Lue4+0Dsxy/JkDRH+Shgv+/9ACC+TEyZJzJnYMYAT25xBIoDC/Nk= Received: from tlendack-t1.amdoffice.net (165.204.77.1) by CY4PR12MB1141.namprd12.prod.outlook.com (10.168.163.149) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1220.11; Fri, 7 Jul 2017 13:39:39 +0000 From: Tom Lendacky To: linux-arch@vger.kernel.org, linux-efi@vger.kernel.org, kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, xen-devel@lists.xen.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org Date: Fri, 07 Jul 2017 08:39:36 -0500 Message-ID: <20170707133936.29711.56840.stgit@tlendack-t1.amdoffice.net> In-Reply-To: <20170707133804.29711.1616.stgit@tlendack-t1.amdoffice.net> References: <20170707133804.29711.1616.stgit@tlendack-t1.amdoffice.net> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Originating-IP: [165.204.77.1] X-ClientProxiedBy: BN6PR03CA0058.namprd03.prod.outlook.com (10.173.137.20) To CY4PR12MB1141.namprd12.prod.outlook.com (10.168.163.149) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 3353d213-442d-416d-11cc-08d4c53d9f94 X-MS-Office365-Filtering-HT: Tenant X-Microsoft-Antispam: UriScan:; BCL:0; PCL:0; RULEID:(300000500095)(300135000095)(300000501095)(300135300095)(22001)(300000502095)(300135100095)(48565401081)(300000503095)(300135400095)(201703131423075)(201703031133081)(300000504095)(300135200095)(300000505095)(300135600095)(300000506095)(300135500095); SRVR:CY4PR12MB1141; X-Microsoft-Exchange-Diagnostics: 1; CY4PR12MB1141; 3: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 X-MS-TrafficTypeDiagnostic: CY4PR12MB1141: X-Microsoft-Exchange-Diagnostics: 1; CY4PR12MB1141; 25: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 X-Microsoft-Exchange-Diagnostics: 1; CY4PR12MB1141; 31: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 X-Microsoft-Exchange-Diagnostics: 1; CY4PR12MB1141; 20: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 X-Microsoft-Antispam-PRVS: X-Exchange-Antispam-Report-Test: UriScan:(125551606395959)(133145235818549)(236129657087228)(767451399110)(148574349560750)(167848164394848); X-Exchange-Antispam-Report-CFA-Test: BCL:0; PCL:0; RULEID:(100000700101)(100105000095)(100000701101)(100105300095)(100000702101)(100105100095)(6040450)(601004)(2401047)(8121501046)(2017060910064)(5005006)(93006095)(93001095)(10201501046)(3002001)(100000703101)(100105400095)(6055026)(6041248)(20161123564025)(20161123558100)(20161123555025)(20161123562025)(20161123560025)(201703131423075)(201702281528075)(201703061421075)(201703061406153)(6072148)(100000704101)(100105200095)(100000705101)(100105500095); SRVR:CY4PR12MB1141; BCL:0; PCL:0; RULEID:(100000800101)(100110000095)(100000801101)(100110300095)(100000802101)(100110100095)(100000803101)(100110400095)(100000804101)(100110200095)(100000805101)(100110500095); SRVR:CY4PR12MB1141; X-Microsoft-Exchange-Diagnostics: =?utf-8?B?MTtDWTRQUjEyTUIxMTQxOzQ6RHl4Z25ucmhZMVhMeXczWjFRUTREMjFrdjFT?= =?utf-8?B?eCszU2NsSzFMOGZhZlJOMVdiZ2d5Z2kvcUFUYUFCRzNmUzJSbU1KcENmL3lU?= =?utf-8?B?VmNzU2lyT2lqMklFMTFrOHJ6bndnaGFmM093OWlETFNpNUczeUZLcnZGZ0RV?= =?utf-8?B?OGRURHQ4cEFlVEtIeEJZM3dFYXJHS1BnSGdOTisvVHAvdlk4cFNmbThJTndT?= =?utf-8?B?WmhPY1ZUcWM5ZCtadHFIdS9qUjNPa2tFZlVRTHBsK3FyTndtWTliazVoeFd1?= =?utf-8?B?R0RHRkVtTm80d001VTVqSlgvNGFhVGpOdmtCVDcvVTNIRzVSdFZ4Z3gxcjRY?= =?utf-8?B?MXYvWTZDVFJIZWNhQVZiOXB1Q29nNmtscm1heDRKeVJpV1k2WGhNcnpGNjJJ?= =?utf-8?B?U29KbWlKM2hBMEF1MXpjRnZlemxjc05hVHkweWppYnVLdklCNm9ybzVQMmNw?= =?utf-8?B?WkxIUmJ1Ukx5ODc3WlFDOEhLd3RmOTljdnB4SkZUN3JHSjQrY2I0WlpoaFNR?= =?utf-8?B?dFpvTk5meHlrdzRKUktjeDkwTjFhVXhyWDZUeVcybCtXN0M0bTh1U21EcldM?= =?utf-8?B?L1ZHQU9TWmJLaW9RcmtGaEI0ZzhQY2xYTklMVGhEUG1HSlYxNTNXQUcwMHhn?= =?utf-8?B?RG5SSFVndTJ1bjg2dTBCbVg2YXVvTzhJN29tUnNways0aUlKQTA1aW5ZRDJW?= =?utf-8?B?dk1UZ2pCZEtkaEJ3UTRYMG9MUGppeGpVSnRmN0hzL1RKYmtlcFZ4ZXlMZTBX?= =?utf-8?B?R043alNoTVI1aUhjM05WRURPWDU4UFpaN3hXVmFkSU9VOXJmdVhMSkVPRVZy?= =?utf-8?B?am5QYkd2SWxrRmVpQ1E3eldST0VwM2xqVFZnbDRLeDJXRUgrSEZENVkyZm51?= =?utf-8?B?TjBoaHlJeTlFMmdGTDdlbU9RSkRSTEo5UjZaK0xZampLOGJOK0Y3M3VPdjFZ?= =?utf-8?B?TzJJZGFUdmNhV0h6dVlMNTFXM0tMVTJPRTlDS1RhVlRwenpMSWIweCszWEc5?= =?utf-8?B?SHZnVG5DUXpVaThWVVFNN3JQVFE2OXpiemV4TzQyNS9xbWNsRStqcHlQbVB1?= =?utf-8?B?cTNDSzVuekkwNEFKaUpIN3ZNZzZqbjBmUFNDT3BQQ2liazNjc0VZai92ZWhW?= =?utf-8?B?MzdOWVkyUlV0ZXRINWdENFhMWGpTa0loN1NENkU5Z09SUldTUmVtU0N3ZWx3?= =?utf-8?B?SVMzYmpLZG1sVE45OG8rUWJQbE5pYnZJSzhNamlSU1Jnek1RUzlWMlFKRi81?= =?utf-8?B?anNpaDVoZDdIVjh6elZiak03WS9wZDVjK25DazNMeXdFdVZ4YUJkeXl6djhm?= =?utf-8?B?MUpncFJ6UElPSWxxTkFGellWMGgwSTBIY3Zacmt6R3FZYXdwckp3SjFiV1hp?= =?utf-8?B?Z3ZCZm05ME9ZRVVnSkIvY0YxdUJ6TEhiaHBaSEpza2RWNFdvQ2djWE5vZWho?= =?utf-8?B?byszaW5iM0Mzaytpd1NDeHYvNXdRdEtCcWVGUnN6QlhxanVvNEovamt4ZWFp?= =?utf-8?B?VnJIVFZkN0Z3dXRJNXZnd1U3VDFubGh6eHFSL1d6bGhXMSt5d3BCd3lsSmlt?= =?utf-8?B?aXlmUmJJTFlFMGp5eWw3NVBIMkVwRVAvTElCV3hXV3BPZjIyVWJXbFBJalhJ?= =?utf-8?B?SVEzK21FZDUxK1ZsVVFUWEYyZnF4QWk4K0dJYkZWYmQvNXZONFJNa0dZaVFk?= =?utf-8?B?VDk5MlVmSjh5YzdBUDJKQmtDUXpKNjBXd3dFOXVsMEF6Ty83TTdBYmtrZW9M?= =?utf-8?B?K2dyZjdUdncrWkM2NlYrQmIwY3JjN25EdFpxWFFxajBsTVpxNktRSlhtWUNP?= =?utf-8?B?Y3dtNjN2NklucmZzdmpqQ0p6MDFzc3RTYmlCV3o2UURzNUhnNnY1cklQbDBF?= =?utf-8?B?Vi9wRENNbktmV1VSTGJyMnlwRzl6WnVUODNpSnU1N215bGcybFpweE00MHBS?= =?utf-8?B?Z1Z4NGFWOXc9PQ==?= X-Forefront-PRVS: 0361212EA8 X-Forefront-Antispam-Report: SFV:NSPM; SFS:(10009020)(4630300001)(6009001)(39840400002)(39860400002)(39450400003)(39850400002)(39400400002)(39410400002)(5660300001)(50466002)(23676002)(230700001)(305945005)(7406005)(66066001)(81166006)(7736002)(478600001)(8676002)(2906002)(47776003)(7416002)(83506001)(97746001)(53416004)(6666003)(575784001)(54356999)(2950100002)(42186005)(103116003)(4326008)(6116002)(6506006)(25786009)(55016002)(1076002)(50986999)(189998001)(3846002)(54906002)(86362001)(72206003)(9686003)(33646002)(53936002)(76176999)(38730400002)(110136004)(921003)(1121003); DIR:OUT; SFP:1101; SCL:1; SRVR:CY4PR12MB1141; H:tlendack-t1.amdoffice.net; FPR:; SPF:None; MLV:sfv; LANG:en; X-Microsoft-Exchange-Diagnostics: =?utf-8?B?MTtDWTRQUjEyTUIxMTQxOzIzOnJ6QStleHJhaVdieVJTUGVzVmsyYldZMmJS?= =?utf-8?B?OURxblZIdk5KSktaRTJNZGdNMCtMYXpBRUsxc1VyYldVZkt4YmU5VUtGWkcx?= =?utf-8?B?dUdHeGNSMmFyNkpsN3ZKYnhPUndaTXNWV1VyOWZlN1FYb1J5dDVGaXErNVJR?= =?utf-8?B?bFl2VzZ5TG9yczMvMVIvbGd1aFNJbmZKWnp4N011WW1Wb2xUWVhIVzU5Wmh2?= =?utf-8?B?SmZ4VXRUOHNyUXhQYWdsMlhzWmZMOGdWbDA4dGR0dHpnenY1OEdFUnNOZk5s?= =?utf-8?B?TVBLU2wyK2dBV09PQXIyZ2w2TTZSbzdUVFNEZXV5Tm1WbGlkdUMvSEpLbVNr?= =?utf-8?B?bmpnenlRekhwTmNmdzVMRVhTNUtmUEVhajNYbzV1SzlDSFFtbnNUR2k4N29N?= =?utf-8?B?dXBnQ041Lytod1dFcmpqcnV5ZzRISTVadlE2ai9LVUR0K1M4UHhlbFpSNEQy?= =?utf-8?B?a081elNwZE0vaFI0UHhVT2xpOGhPcHJJRkpyMmp6QWkybjRScGVvcEdScWgv?= =?utf-8?B?QXR3eC9xZDJFcldzM1lGSk1nTlBuUittalN5Y3N6dFgwN3F6NVJVbE1QOVpO?= =?utf-8?B?WTlSaVBrV2R5WmF1VFErUVdQeURXTFhseVpZUHlWWTJIcEZnWVc0dW5raUN1?= =?utf-8?B?TS8vSTNMRlh6UGZvaHIvTk0zMXpCNFR5bW9tMzB3NFJGTEtjMGJzaTRtV3Jj?= =?utf-8?B?d0JHQ0Vad3BSelBQSTBDTHlWK3R1d0RDRnZsM1Y2ZkhGYXFnd1RiT29iY3NS?= =?utf-8?B?MERhNlQydjJFaXdwOUE4Znpna0dGcnVqSGRUS2lCOHRYaUEzd1k4RUZZRzJl?= =?utf-8?B?dkZEUWd3Y1pNK1Z0bnhGNG8xNjVCU2ZMTDh4cEMwMGZYVGRwOUNZRTZJMkJw?= =?utf-8?B?WTlGMlBCaDhrOXBUZThIM2lnbXVXOE8wVEowZUZyTzJzcmhUbVpYWnFpcUdR?= =?utf-8?B?bWxUc3R5enRmU0lrRHJXZlA5K2dsczdLaWYzZUY3R0RPaVAzNTMvYS9LRzg4?= =?utf-8?B?NGZsZkxJbklBRWVKUzBzK0xyVWYxaWlYTTlRbEpHbHRUUzZtTWxteWxwS3lp?= =?utf-8?B?OU11SzEyTzZRbjJFcjZVd1pTY05Dd1diTTk2ZWZORkdDNm9ZOGhvWEJ4OHc2?= =?utf-8?B?b2F5VDNLTmVsSURnMG52bExwMEgzMGE1UmlkVU8zOW10U2ZBdlNudHdja2tr?= =?utf-8?B?WlZiTHdLczFUdEFYNjlXQUlxTGRqbC9iQm9kbmgvRXQ5SW5BdGlXSjZ6aDhr?= =?utf-8?B?ejI0Q0pyU0JaWHBURlN0WWF3T0V6VDdpNWdUMm8wMi9zMjhhaHpvVlgyMUdh?= =?utf-8?B?ZDd5bU9GbThsdmhMbnUzck1OK2dENVhaakRFK2oyMkhHR1VSbkFUMkw2QU5m?= =?utf-8?B?cXl6eVdCbGx5ODhJMDBLaFRTNFlKL0pJbHdVTm9ZT0ppK29UazNvQ3lXUUc0?= =?utf-8?B?cGx6Mys0Qkk3Z3o4WDNKQy85OXNoeTlYNnBZTGFPSVlJTDlMSytOTWFuTDl0?= =?utf-8?B?YzIweVpSU1ZpYy9lbWwvUTVyVVB5UVJxckwwc2U5MHovVkNEaVRxUGo3UUQy?= =?utf-8?B?OXlldUY2eDlSZkNPNXBGSFhlR1hWVmxYVHdmT1p1TEY4N1JMZmpYTVVlS0F1?= =?utf-8?B?UWpDMzVheDlGTitMb2IvRUJkbC9ZZG1YVVNFL3BoUlA0OVd0SktWYWJVZUJy?= =?utf-8?Q?FuM3ck6Nyv+FB1cbic=3D?= X-Microsoft-Exchange-Diagnostics: =?utf-8?B?MTtDWTRQUjEyTUIxMTQxOzY6ZWlCZHZHWjRzcGordXcvOHhsNnQ3MmJHR2Jl?= =?utf-8?B?RjZYNUpYTk1GWlBNVWNaSDFqSUZMdE5SNmcrWUUya3FvcHYxRmZMQ3hUYkdq?= =?utf-8?B?TzhQYzZEdnV4SnI5dHFDOWZ2cUFGY0g2Um1yaVJkczc2RHljTnR0dlNYQlBO?= =?utf-8?B?QnZkTEEyYTZBb2IyZzI0d2ZlRXRETGxHTEhmYnZPdWV1NXZQT2ZHeHM4cHY5?= =?utf-8?B?ZXQwanB5L1dRQnBOdW1NQVo5K1A0MzBwR205bDdyUkwwdWdRZFFTSGY1aCsy?= =?utf-8?B?NUduU1Njck9ud1F2d21aN3hwU2lSLzJaTFhVVzNpSzJuTlJiTUowNjM2Q242?= =?utf-8?B?N3NtREJPR291L2pXVVNLTmlkK2x1d1pUMWZueTU5UHhmaXdvMDlFRHJzSVpK?= =?utf-8?B?aGJWVElHRy82UGNNMUI0ZFNwc1h3WmM0MHZFbVZIVUxvOEx5eFl0S0cxQ3c0?= =?utf-8?B?cUVFZ3FYQ3Y5bUtvc04xNWcvVTdhankrVEF0TVZOYzVoRlZXMzdua0k2MXlw?= =?utf-8?B?ODduYmR0OTJsdG5KbWEzM0Y2SVJ1UmFXWDRQcTFHSU82YXJnaHB5OVVGRVln?= =?utf-8?B?cHgrekN3bEVaY2NZTU5pcm5ZWVVWV3kxOGFZVVVXNW55Y1ZDbHFWTWE1Vko4?= =?utf-8?B?UzZNQmFxQlFPRVNtQW4rb2c4Yk1Jc1RlY0ViUmJsVXBXTlZMOVlFRFlXMUM1?= =?utf-8?B?YytYaUl5RFZwYUhoUTZHRnVJTDMxVGtraitxcStFOEtSMVlmZ2FrY2lSYUhm?= =?utf-8?B?Mis5QVFLa1JMLzEvNnV0VzJtUUkremphQ0ZzUmtqejVaaHkyRWdKa1lPZUtC?= =?utf-8?B?cW5USkxJVXI3alprL1JhUnBHL28xbzl4UTVCSGlGL1VYbEpxbmRoVS9xMmNw?= =?utf-8?B?VjJmNFRqQnVmOTAybFJnbEl4cXh0ejgrelJ4MS9GbTRkaGp4UmRDdlE2bXZK?= =?utf-8?B?eENnZXRSZmowV1M5eHZ6VW1FUlQ0c3VkUFd6N2RwWngvN0JTeDF6NmxyenJj?= =?utf-8?B?TUoxTDBBNmJ5QmExUkRVUTFUYy9ZY05MVkV4WlVsR0NrU0RVRkcyWHVjdTFJ?= =?utf-8?B?ME5peENaZTdHdW1mNGVYYkRXUXh1ME9welBWZ0kzbGxuSEwrNjN3dXVwRHdy?= =?utf-8?B?bThjT2VCdzB5LzhneDZGYks1VUNDSmloNVZFVWpCZysyNnNuc09nMGVtOXF3?= =?utf-8?B?UzJOTkdSNXg1OGNKTk8xNE1IcVF2Yk5xdUtINTNsRlE2K3gwdWJsN2kxZEZp?= =?utf-8?B?UFU3YmxFWEpHbGZ5NGZRRk0rMVZaa1VJdDMrdWtCUHppdk84N2RRV2hsbHVL?= =?utf-8?B?UkRrNVlMeVRQNVp5bWp5b0ZFa252MVA2NXUzb3V0dzE2THJ4Mm1heTZnRWFO?= =?utf-8?Q?3ctZyFE?= X-Microsoft-Exchange-Diagnostics: 1; CY4PR12MB1141; 5:emxthGXleuulYnmq3LzBujH65SBpDHw7xuMVGXJ4GxK9B9HGmnd+3hwWsQUDi2MRSSnI+sAtq5NYrl5E9hKmqplm5h1Iq4cNbvBFWR/859Lmt1Wv4lLO8+ZBGx1gMxdez7rmreSN7SpjJzDdSRyHMul7hfSvks0Uh3k2ubcfEJdh1XjhAr0anf5NWIlHvNc1+g/3keP5S8jlCBLuQL/g0AjxOk6FCTnbeUeKpnYHx2wRMyScshATXd4RpVTHp7ZH8RlucOLng64LrDUjaheltBbEDZTfxw8beAiqB2NpjTyWL2u9X0GM/E5JrODfWx/jtQ1Zt6PtwnBVkyM7xTPAuas3Yau8HSVPotIpRdA2nbbPICXnBpLzk9zSiC1wS1Y2zH/80eM7gAXLBJZTkTsuB1zyWchhFNIO3gk2Khqrvow4lUTYVlB+2b5HH0cgEy9dTJ+DELpIsumGTLDCQb72XwfZsR3QAvWYBSUfYFfX4MUa6OZGhY4aYDXq4OdbLkfq; 24:ifARW2u7W/d2TOaSevwkuJHfUImbi/cnF3zt791oD2ezTh2xP6QmlykJJLqGKzauyWLfH29sQBm02uc7cvjzSlyySDlEsXY7xE3LVxG1P1M= SpamDiagnosticOutput: 1:99 SpamDiagnosticMetadata: NSPM X-Microsoft-Exchange-Diagnostics: 1; CY4PR12MB1141; 7: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 X-Microsoft-Exchange-Diagnostics: 1; CY4PR12MB1141; 20:BRcQFI3pHwhrHMPuBKATy1mu2Wt09C00FHK9quFACGx+baTXjrQydVvBDztRQyKRPXhl5t0PO5I/gtIt2OeNOC6qNm2ObkWlo121XzEC0ahwtBpXt9G2SmE8KMQ/n/amAT/95Wpi67f5hUbA8ZQLJYuTi6sXGKsIW55Xh5xoRyYwOEKdPUn6uxGo45oJwzkNQobmmvw1xrXuMk2f1kPW8qFlhfXSNafLL38OepJjEm39ul8xazbSHIy/ZjarUyMO X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Jul 2017 13:39:39.4540 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY4PR12MB1141 Cc: Brijesh Singh , Toshimitsu Kani , "Michael S. Tsirkin" , Matt Fleming , Alexander Potapenko , "H. Peter Anvin" , Boris Ostrovsky , Jonathan Corbet , Joerg Roedel , Radim =?utf-8?b?S3LEjW3DocWZ?= , Larry Woodman , Ingo Molnar , Andrey Ryabinin , Dave Young , Rik van Riel , Arnd Bergmann , Borislav Petkov , Andy Lutomirski , Thomas Gleixner , Dmitry Vyukov , Juergen Gross , Paolo Bonzini Subject: [Xen-devel] [PATCH v9 08/38] x86/mm: Add support to enable SME in early boot processing X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add support to the early boot code to use Secure Memory Encryption (SME). Since the kernel has been loaded into memory in a decrypted state, encrypt the kernel in place and update the early pagetables with the memory encryption mask so that new pagetable entries will use memory encryption. The routines to set the encryption mask and perform the encryption are stub routines for now with functionality to be added in a later patch. Signed-off-by: Tom Lendacky --- arch/x86/include/asm/mem_encrypt.h | 8 +++++ arch/x86/kernel/head64.c | 53 +++++++++++++++++++++++++++++------- arch/x86/kernel/head_64.S | 20 ++++++++++++-- arch/x86/mm/mem_encrypt.c | 9 ++++++ include/linux/mem_encrypt.h | 5 +++ 5 files changed, 82 insertions(+), 13 deletions(-) diff --git a/arch/x86/include/asm/mem_encrypt.h b/arch/x86/include/asm/mem_encrypt.h index a105796..475e34f 100644 --- a/arch/x86/include/asm/mem_encrypt.h +++ b/arch/x86/include/asm/mem_encrypt.h @@ -15,14 +15,22 @@ #ifndef __ASSEMBLY__ +#include + #ifdef CONFIG_AMD_MEM_ENCRYPT extern unsigned long sme_me_mask; +void __init sme_encrypt_kernel(void); +void __init sme_enable(void); + #else /* !CONFIG_AMD_MEM_ENCRYPT */ #define sme_me_mask 0UL +static inline void __init sme_encrypt_kernel(void) { } +static inline void __init sme_enable(void) { } + #endif /* CONFIG_AMD_MEM_ENCRYPT */ #endif /* __ASSEMBLY__ */ diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c index 46c3c73..1f0ddcc 100644 --- a/arch/x86/kernel/head64.c +++ b/arch/x86/kernel/head64.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include @@ -45,9 +46,10 @@ static void __head *fixup_pointer(void *ptr, unsigned long physaddr) return ptr - (void *)_text + (void *)physaddr; } -void __head __startup_64(unsigned long physaddr) +unsigned long __head __startup_64(unsigned long physaddr) { unsigned long load_delta, *p; + unsigned long pgtable_flags; pgdval_t *pgd; p4dval_t *p4d; pudval_t *pud; @@ -68,6 +70,12 @@ void __head __startup_64(unsigned long physaddr) if (load_delta & ~PMD_PAGE_MASK) for (;;); + /* Activate Secure Memory Encryption (SME) if supported and enabled */ + sme_enable(); + + /* Include the SME encryption mask in the fixup value */ + load_delta += sme_get_me_mask(); + /* Fixup the physical addresses in the page table */ pgd = fixup_pointer(&early_top_pgt, physaddr); @@ -94,28 +102,30 @@ void __head __startup_64(unsigned long physaddr) pud = fixup_pointer(early_dynamic_pgts[next_early_pgt++], physaddr); pmd = fixup_pointer(early_dynamic_pgts[next_early_pgt++], physaddr); + pgtable_flags = _KERNPG_TABLE + sme_get_me_mask(); if (IS_ENABLED(CONFIG_X86_5LEVEL)) { p4d = fixup_pointer(early_dynamic_pgts[next_early_pgt++], physaddr); i = (physaddr >> PGDIR_SHIFT) % PTRS_PER_PGD; - pgd[i + 0] = (pgdval_t)p4d + _KERNPG_TABLE; - pgd[i + 1] = (pgdval_t)p4d + _KERNPG_TABLE; + pgd[i + 0] = (pgdval_t)p4d + pgtable_flags; + pgd[i + 1] = (pgdval_t)p4d + pgtable_flags; i = (physaddr >> P4D_SHIFT) % PTRS_PER_P4D; - p4d[i + 0] = (pgdval_t)pud + _KERNPG_TABLE; - p4d[i + 1] = (pgdval_t)pud + _KERNPG_TABLE; + p4d[i + 0] = (pgdval_t)pud + pgtable_flags; + p4d[i + 1] = (pgdval_t)pud + pgtable_flags; } else { i = (physaddr >> PGDIR_SHIFT) % PTRS_PER_PGD; - pgd[i + 0] = (pgdval_t)pud + _KERNPG_TABLE; - pgd[i + 1] = (pgdval_t)pud + _KERNPG_TABLE; + pgd[i + 0] = (pgdval_t)pud + pgtable_flags; + pgd[i + 1] = (pgdval_t)pud + pgtable_flags; } i = (physaddr >> PUD_SHIFT) % PTRS_PER_PUD; - pud[i + 0] = (pudval_t)pmd + _KERNPG_TABLE; - pud[i + 1] = (pudval_t)pmd + _KERNPG_TABLE; + pud[i + 0] = (pudval_t)pmd + pgtable_flags; + pud[i + 1] = (pudval_t)pmd + pgtable_flags; pmd_entry = __PAGE_KERNEL_LARGE_EXEC & ~_PAGE_GLOBAL; + pmd_entry += sme_get_me_mask(); pmd_entry += physaddr; for (i = 0; i < DIV_ROUND_UP(_end - _text, PMD_SIZE); i++) { @@ -136,9 +146,30 @@ void __head __startup_64(unsigned long physaddr) pmd[i] += load_delta; } - /* Fixup phys_base */ + /* + * Fixup phys_base - remove the memory encryption mask to obtain + * the true physical address. + */ p = fixup_pointer(&phys_base, physaddr); - *p += load_delta; + *p += load_delta - sme_get_me_mask(); + + /* Encrypt the kernel (if SME is active) */ + sme_encrypt_kernel(); + + /* + * Return the SME encryption mask (if SME is active) to be used as a + * modifier for the initial pgdir entry programmed into CR3. + */ + return sme_get_me_mask(); +} + +unsigned long __startup_secondary_64(void) +{ + /* + * Return the SME encryption mask (if SME is active) to be used as a + * modifier for the initial pgdir entry programmed into CR3. + */ + return sme_get_me_mask(); } /* Wipe all early page tables except for the kernel symbol map */ diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S index 6225550..ec5d5e9 100644 --- a/arch/x86/kernel/head_64.S +++ b/arch/x86/kernel/head_64.S @@ -73,12 +73,19 @@ startup_64: /* Sanitize CPU configuration */ call verify_cpu + /* + * Perform pagetable fixups. Additionally, if SME is active, encrypt + * the kernel and retrieve the modifier (SME encryption mask if SME + * is active) to be added to the initial pgdir entry that will be + * programmed into CR3. + */ leaq _text(%rip), %rdi pushq %rsi call __startup_64 popq %rsi - movq $(early_top_pgt - __START_KERNEL_map), %rax + /* Form the CR3 value being sure to include the CR3 modifier */ + addq $(early_top_pgt - __START_KERNEL_map), %rax jmp 1f ENTRY(secondary_startup_64) /* @@ -98,7 +105,16 @@ ENTRY(secondary_startup_64) /* Sanitize CPU configuration */ call verify_cpu - movq $(init_top_pgt - __START_KERNEL_map), %rax + /* + * Retrieve the modifier (SME encryption mask if SME is active) to be + * added to the initial pgdir entry that will be programmed into CR3. + */ + pushq %rsi + call __startup_secondary_64 + popq %rsi + + /* Form the CR3 value being sure to include the CR3 modifier */ + addq $(init_top_pgt - __START_KERNEL_map), %rax 1: /* Enable PAE mode, PGE and LA57 */ diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c index b99d469..3ac6f99 100644 --- a/arch/x86/mm/mem_encrypt.c +++ b/arch/x86/mm/mem_encrypt.c @@ -11,6 +11,7 @@ */ #include +#include /* * Since SME related variables are set early in the boot process they must @@ -19,3 +20,11 @@ */ unsigned long sme_me_mask __section(.data) = 0; EXPORT_SYMBOL_GPL(sme_me_mask); + +void __init sme_encrypt_kernel(void) +{ +} + +void __init sme_enable(void) +{ +} diff --git a/include/linux/mem_encrypt.h b/include/linux/mem_encrypt.h index 59769f7..570f4fc 100644 --- a/include/linux/mem_encrypt.h +++ b/include/linux/mem_encrypt.h @@ -30,6 +30,11 @@ static inline bool sme_active(void) return !!sme_me_mask; } +static inline unsigned long sme_get_me_mask(void) +{ + return sme_me_mask; +} + #endif /* __ASSEMBLY__ */ #endif /* __MEM_ENCRYPT_H__ */