| Message ID | 20231230161954.569267-24-michael.roth@amd.com |
|---|---|
| State | Superseded |
| Headers | show
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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by DS1PEPF00017098.mail.protection.outlook.com (10.167.18.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7159.9 via Frontend Transport; Sat, 30 Dec 2023 16:26:58 +0000 Received: from localhost (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.34; Sat, 30 Dec 2023 10:26:58 -0600 From: Michael Roth <michael.roth@amd.com> To: <x86@kernel.org> CC: <kvm@vger.kernel.org>, <linux-coco@lists.linux.dev>, <linux-mm@kvack.org>, <linux-crypto@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <tglx@linutronix.de>, <mingo@redhat.com>, <jroedel@suse.de>, <thomas.lendacky@amd.com>, <hpa@zytor.com>, <ardb@kernel.org>, <pbonzini@redhat.com>, <seanjc@google.com>, <vkuznets@redhat.com>, <jmattson@google.com>, <luto@kernel.org>, <dave.hansen@linux.intel.com>, <slp@redhat.com>, <pgonda@google.com>, <peterz@infradead.org>, <srinivas.pandruvada@linux.intel.com>, <rientjes@google.com>, <tobin@ibm.com>, <bp@alien8.de>, <vbabka@suse.cz>, <kirill@shutemov.name>, <ak@linux.intel.com>, <tony.luck@intel.com>, <sathyanarayanan.kuppuswamy@linux.intel.com>, <alpergun@google.com>, <jarkko@kernel.org>, <ashish.kalra@amd.com>, <nikunj.dadhania@amd.com>, <pankaj.gupta@amd.com>, <liam.merwick@oracle.com>, <zhi.a.wang@intel.com> Subject: [PATCH v1 23/26] x86/cpufeatures: Enable/unmask SEV-SNP CPU feature Date: Sat, 30 Dec 2023 10:19:51 -0600 Message-ID: <20231230161954.569267-24-michael.roth@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231230161954.569267-1-michael.roth@amd.com> References: <20231230161954.569267-1-michael.roth@amd.com> Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: <linux-crypto.vger.kernel.org> List-Subscribe: <mailto:linux-crypto+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:linux-crypto+unsubscribe@vger.kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF00017098:EE_|MW4PR12MB7481:EE_ X-MS-Office365-Filtering-Correlation-Id: 58f029b1-4130-45cf-1d1e-08dc0954255f X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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| Series |
Add AMD Secure Nested Paging (SEV-SNP) Initialization Support
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expand
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diff --git a/arch/x86/include/asm/disabled-features.h b/arch/x86/include/asm/disabled-features.h index a864a5b208fa..3332d2940020 100644 --- a/arch/x86/include/asm/disabled-features.h +++ b/arch/x86/include/asm/disabled-features.h @@ -117,7 +117,11 @@ #define DISABLE_IBT (1 << (X86_FEATURE_IBT & 31)) #endif +#ifdef CONFIG_KVM_AMD_SEV #define DISABLE_SEV_SNP 0 +#else +#define DISABLE_SEV_SNP (1 << (X86_FEATURE_SEV_SNP & 31)) +#endif /* * Make sure to add features to the correct mask
With all the required host changes in place, it should now be possible to initialize SNP-related MSR bits, set up RMP table enforcement, and initialize SNP support in firmware while maintaining legacy support for running SEV/SEV-ES guests. Go ahead and enable the SNP feature now. Signed-off-by: Michael Roth <michael.roth@amd.com> --- arch/x86/include/asm/disabled-features.h | 4 ++++ 1 file changed, 4 insertions(+)