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Peter Anvin" , Kees Cook , "Kirill A . Shutemov" , Tony Luck , "Nick Desaulniers" , Kuppuswamy Sathyanarayanan , Tom Lendacky , Venu Busireddy , "Joerg Roedel" , Tianyu Lan Subject: [PATCH v3 0/2] x86/sev: Fix AP Jump Table handling for SNP guests Date: Fri, 22 Apr 2022 08:56:22 -0500 Message-ID: <20220422135624.114172-1-michael.roth@amd.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: e9d1866b-dd7b-42e8-96ff-08da2467f495 X-MS-TrafficTypeDiagnostic: CH2PR12MB4072:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230001)(4636009)(36840700001)(40470700004)(46966006)(36860700001)(426003)(82310400005)(6916009)(54906003)(40460700003)(70206006)(81166007)(356005)(316002)(36756003)(336012)(2906002)(508600001)(83380400001)(70586007)(5660300002)(26005)(7416002)(16526019)(186003)(6666004)(47076005)(1076003)(44832011)(86362001)(4744005)(8676002)(8936002)(4326008)(2616005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Apr 2022 13:56:52.8928 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e9d1866b-dd7b-42e8-96ff-08da2467f495 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT015.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR12MB4072 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series is based on tip/master (commit 1912a07f8a) SNP guests should only retrieve the AP Jump Table address from the secrets page, not via a GHCB request as with SEV-ES guests. This series reworks the handling accordingly, and fixes up some __init annotations for some of the SEV routines touched by that rework. v3: - Address missing __init annotations (Boris) v2: - add handling for memremap()/ioremap() failures (Boris) - don't mix function calls with declarations (Boris) arch/x86/include/asm/sev.h | 35 +++++++++++++++++++++++++++++++++++ arch/x86/kernel/sev.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++++-------------------------- arch/x86/realmode/init.c | 2 +- drivers/virt/coco/sev-guest/sev-guest.h | 35 ----------------------------------- 4 files changed, 90 insertions(+), 62 deletions(-)