Message ID | 20230904095347.14994-11-manali.shukla@amd.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Mon, 4 Sep 2023 09:57:10 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; 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 DS2PEPF0000343A.mail.protection.outlook.com (10.167.18.37) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6768.25 via Frontend Transport; Mon, 4 Sep 2023 09:57:10 +0000 Received: from brahmaputra.amd.com (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 15.1.2507.27; Mon, 4 Sep 2023 04:57:06 -0500 From: Manali Shukla <manali.shukla@amd.com> To: <kvm@vger.kernel.org>, <seanjc@google.com> CC: <linux-doc@vger.kernel.org>, <linux-perf-users@vger.kernel.org>, <x86@kernel.org>, <pbonzini@redhat.com>, <peterz@infradead.org>, <bp@alien8.de>, <santosh.shukla@amd.com>, <ravi.bangoria@amd.com>, <thomas.lendacky@amd.com>, <nikunj@amd.com>, <manali.shukla@amd.com> Subject: [PATCH 10/13] x86/cpufeatures: Add CPUID feature bit for VIBS in SEV-ES guest Date: Mon, 4 Sep 2023 09:53:44 +0000 Message-ID: <20230904095347.14994-11-manali.shukla@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230904095347.14994-1-manali.shukla@amd.com> References: <20230904095347.14994-1-manali.shukla@amd.com> 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-TrafficTypeDiagnostic: DS2PEPF0000343A:EE_|CY8PR12MB7339:EE_ X-MS-Office365-Filtering-Correlation-Id: 9926ec71-319f-476f-cb60-08dbad2d4e93 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Series |
Implement support for IBS virtualization
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expand
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diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h index 8f92fa6d8319..022ccee197e2 100644 --- a/arch/x86/include/asm/cpufeatures.h +++ b/arch/x86/include/asm/cpufeatures.h @@ -439,6 +439,7 @@ #define X86_FEATURE_SEV_ES (19*32+ 3) /* AMD Secure Encrypted Virtualization - Encrypted State */ #define X86_FEATURE_V_TSC_AUX (19*32+ 9) /* "" Virtual TSC_AUX */ #define X86_FEATURE_SME_COHERENT (19*32+10) /* "" AMD hardware-enforced cache coherency */ +#define X86_FEATURE_SEV_ES_VIBS (19*32+19) /* "" IBS virtualization for SEV-ES guests */ /* AMD-defined Extended Feature 2 EAX, CPUID level 0x80000021 (EAX), word 20 */ #define X86_FEATURE_NO_NESTED_DATA_BP (20*32+ 0) /* "" No Nested Data Breakpoints */
VIBS feature allows the guest to collect IBS samples without exiting. Presence of the VIBS feature for SEV-ES guests is indicated via CPUID function 0x8000001F_EAX[19]. Signed-off-by: Manali Shukla <manali.shukla@amd.com> --- arch/x86/include/asm/cpufeatures.h | 1 + 1 file changed, 1 insertion(+)