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Tue, 25 Aug 2020 19:06:29 +0000 From: Tom Lendacky To: qemu-devel@nongnu.org, kvm@vger.kernel.org Subject: [PATCH 4/4] sev/i386: Enable an SEV-ES guest based on SEV policy Date: Tue, 25 Aug 2020 14:05:43 -0500 Message-Id: <8390c20d2f7e638d166f7b771c3e11363a7852f6.1598382343.git.thomas.lendacky@amd.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: References: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: DM5PR13CA0065.namprd13.prod.outlook.com (2603:10b6:3:117::27) To DM5PR12MB1355.namprd12.prod.outlook.com (2603:10b6:3:6e::7) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from 255.255.255.255 (255.255.255.255) by DM5PR13CA0065.namprd13.prod.outlook.com (2603:10b6:3:117::27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3326.10 via Frontend Transport; Tue, 25 Aug 2020 19:06:29 +0000 X-Mailer: git-send-email 2.28.0 X-Originating-IP: [165.204.77.1] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: bf206588-4478-40b8-1fdd-08d84929f930 X-MS-TrafficTypeDiagnostic: DM5PR1201MB0219: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:9508; 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envelope-from=Thomas.Lendacky@amd.com; helo=NAM10-BN7-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/08/25 15:06:39 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: 4 X-Spam_score: 0.4 X-Spam_bar: / X-Spam_report: (0.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FORGED_SPF_HELO=1, MSGID_FROM_MTA_HEADER=0.001, RCVD_ILLEGAL_IP=1.3, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_NONE=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Eduardo Habkost , "Michael S . Tsirkin" , Marcelo Tosatti , Paolo Bonzini , Jiri Slaby , Richard Henderson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Tom Lendacky Update the sev_es_enabled() function return value to be based on the SEV policy that has been specified. SEV-ES is enabled if SEV is enabled and the SEV-ES policy bit is set in the policy object. Signed-off-by: Tom Lendacky --- target/i386/sev.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/target/i386/sev.c b/target/i386/sev.c index 5146b788fb..153c2cba2c 100644 --- a/target/i386/sev.c +++ b/target/i386/sev.c @@ -70,6 +70,8 @@ struct SevGuestState { #define DEFAULT_GUEST_POLICY 0x1 /* disable debug */ #define DEFAULT_SEV_DEVICE "/dev/sev" +#define GUEST_POLICY_SEV_ES_BIT (1 << 2) + /* SEV Information Block GUID = 00f771de-1a7e-4fcb-890e-68c77e2fb44e */ #define SEV_INFO_BLOCK_GUID "\xde\x71\xf7\x00\x7e\x1a\xcb\x4f\x89\x0e\x68\xc7\x7e\x2f\xb4\x4e" @@ -374,7 +376,7 @@ sev_enabled(void) bool sev_es_enabled(void) { - return false; + return (sev_enabled() && (sev_guest->policy & GUEST_POLICY_SEV_ES_BIT)); } uint64_t -- 2.28.0