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Tsirkin" , Paolo Bonzini , =?UTF-8?q?=5C=22Radim=20Kr=C4=8Dm=C3=A1=C5=99=5C=22?= , Tom Lendacky , Brijesh Singh Subject: [RFC Part2 PATCH v3 19/26] KVM: svm: Add support for SEV GUEST_STATUS command Date: Mon, 24 Jul 2017 15:02:56 -0500 Message-Id: <20170724200303.12197-20-brijesh.singh@amd.com> X-Mailer: git-send-email 2.9.4 In-Reply-To: <20170724200303.12197-1-brijesh.singh@amd.com> References: <20170724200303.12197-1-brijesh.singh@amd.com> MIME-Version: 1.0 X-Originating-IP: [165.204.78.1] X-ClientProxiedBy: DM3PR12CA0049.namprd12.prod.outlook.com (10.161.151.17) To BY2PR12MB0145.namprd12.prod.outlook.com (10.162.82.18) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 41c64db9-9e68-481d-ee1c-08d4d2cf170f X-MS-Office365-Filtering-HT: Tenant X-Microsoft-Antispam: UriScan:; BCL:0; PCL:0; RULEID:(300000500095)(300135000095)(300000501095)(300135300095)(22001)(300000502095)(300135100095)(48565401081)(300000503095)(300135400095)(201703131423075)(201703031133081)(300000504095)(300135200095)(300000505095)(300135600095)(300000506095)(300135500095); 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Signed-off-by: Brijesh Singh --- arch/x86/kvm/svm.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 7a77197..21f85e1 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -6024,6 +6024,40 @@ static int sev_launch_finish(struct kvm *kvm, struct kvm_sev_cmd *argp) return ret; } +static int sev_guest_status(struct kvm *kvm, struct kvm_sev_cmd *argp) +{ + struct kvm_sev_guest_status params; + struct sev_data_guest_status *data; + int ret; + + if (!sev_guest(kvm)) + return -ENOTTY; + + if (copy_from_user(¶ms, (void *) argp->data, + sizeof(struct kvm_sev_guest_status))) + return -EFAULT; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->handle = sev_get_handle(kvm); + ret = sev_issue_cmd(kvm, SEV_CMD_GUEST_STATUS, data, &argp->error); + if (ret) + goto e_free; + + params.policy = data->policy; + params.state = data->state; + params.handle = data->handle; + + if (copy_to_user((void *) argp->data, ¶ms, + sizeof(struct kvm_sev_guest_status))) + ret = -EFAULT; +e_free: + kfree(data); + return ret; +} + static int svm_memory_encryption_op(struct kvm *kvm, void __user *argp) { struct kvm_sev_cmd sev_cmd; @@ -6055,6 +6089,10 @@ static int svm_memory_encryption_op(struct kvm *kvm, void __user *argp) r = sev_launch_finish(kvm, &sev_cmd); break; } + case KVM_SEV_GUEST_STATUS: { + r = sev_guest_status(kvm, &sev_cmd); + break; + } default: break; }