Message ID | 73021b2cae2341c6cdefdf268f39611e476af0a3.1605632857.git.thomas.lendacky@amd.com (mailing list archive) |
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State | New, archived |
Headers | show
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Tue, 17 Nov 2020 17:09:53 +0000 From: Tom Lendacky <thomas.lendacky@amd.com> To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, x86@kernel.org Cc: Paolo Bonzini <pbonzini@redhat.com>, Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>, Sean Christopherson <sean.j.christopherson@intel.com>, Vitaly Kuznetsov <vkuznets@redhat.com>, Wanpeng Li <wanpengli@tencent.com>, Borislav Petkov <bp@alien8.de>, Ingo Molnar <mingo@redhat.com>, Thomas Gleixner <tglx@linutronix.de>, Brijesh Singh <brijesh.singh@amd.com> Subject: [PATCH v4 16/34] KVM: SVM: Add support for SEV-ES GHCB MSR protocol function 0x100 Date: Tue, 17 Nov 2020 11:07:19 -0600 Message-Id: <73021b2cae2341c6cdefdf268f39611e476af0a3.1605632857.git.thomas.lendacky@amd.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <cover.1605632857.git.thomas.lendacky@amd.com> References: <cover.1605632857.git.thomas.lendacky@amd.com> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Originating-IP: [165.204.77.1] X-ClientProxiedBy: DM5PR05CA0002.namprd05.prod.outlook.com (2603:10b6:3:d4::12) To DM5PR12MB1355.namprd12.prod.outlook.com (2603:10b6:3:6e::7) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from tlendack-t1.amd.com (165.204.77.1) by DM5PR05CA0002.namprd05.prod.outlook.com (2603:10b6:3:d4::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3589.15 via Frontend Transport; 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SEV-ES hypervisor support
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diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index 53bf3ff1d9cc..c2cc38e7400b 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -1574,6 +1574,19 @@ static int sev_handle_vmgexit_msr_protocol(struct vcpu_svm *svm) GHCB_MSR_INFO_POS); break; } + case GHCB_MSR_TERM_REQ: { + u64 reason_set, reason_code; + + reason_set = get_ghcb_msr_bits(svm, + GHCB_MSR_TERM_REASON_SET_MASK, + GHCB_MSR_TERM_REASON_SET_POS); + reason_code = get_ghcb_msr_bits(svm, + GHCB_MSR_TERM_REASON_MASK, + GHCB_MSR_TERM_REASON_POS); + pr_info("SEV-ES guest requested termination: %#llx:%#llx\n", + reason_set, reason_code); + fallthrough; + } default: ret = -EINVAL; } diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h index 0df18bdef4ef..7e3f8e3e0722 100644 --- a/arch/x86/kvm/svm/svm.h +++ b/arch/x86/kvm/svm/svm.h @@ -542,6 +542,12 @@ void svm_vcpu_unblocking(struct kvm_vcpu *vcpu); #define GHCB_MSR_CPUID_REG_POS 30 #define GHCB_MSR_CPUID_REG_MASK 0x3 +#define GHCB_MSR_TERM_REQ 0x100 +#define GHCB_MSR_TERM_REASON_SET_POS 12 +#define GHCB_MSR_TERM_REASON_SET_MASK 0xf +#define GHCB_MSR_TERM_REASON_POS 16 +#define GHCB_MSR_TERM_REASON_MASK 0xff + extern unsigned int max_sev_asid; static inline bool svm_sev_enabled(void)