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Mon, 22 Aug 2016 23:29:13 +0000 Subject: [RFC PATCH v1 25/28] KVM: SVM: add KVM_SEV_GUEST_STATUS command From: Brijesh Singh To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Date: Mon, 22 Aug 2016 19:29:09 -0400 Message-ID: <147190854977.9523.2458628974170220401.stgit@brijesh-build-machine> In-Reply-To: <147190820782.9523.4967724730957229273.stgit@brijesh-build-machine> References: <147190820782.9523.4967724730957229273.stgit@brijesh-build-machine> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Originating-IP: [165.204.77.1] X-ClientProxiedBy: MWHPR07CA0020.namprd07.prod.outlook.com (10.172.94.30) To SN1PR12MB0670.namprd12.prod.outlook.com (10.163.208.28) X-MS-Office365-Filtering-Correlation-Id: 4eca610d-7e50-4bd5-1199-08d3cae4233f X-Microsoft-Exchange-Diagnostics: 1; SN1PR12MB0670; 2:m1disKBGy6sQ015iO/Noc1vEaJ0IvYKl6c1yt0fI5l0p0Amnpz7CiLEYGlctV+8sEMbTSeNa5+j6mgNcFhTG2Y6y0VIBzKtaA0izlhQkKuhKtQgAn/VpIYw+ydFIbg9xp7YMCAhMxuyW/QngJZGZX2Ff4gxD4u6gYSvnZXIKM713kaFV0WzvNweJsZFtO8VJ; 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For more information see [1], section 6.10 [1] http://support.amd.com/TechDocs/55766_SEV-KM%20API_Spec.pdf Signed-off-by: Brijesh Singh --- arch/x86/kvm/svm.c | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 60cc0f7..63e7d15 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -5570,6 +5570,42 @@ err_1: return ret; } +static int sev_guest_status(struct kvm *kvm, + struct kvm_sev_guest_status __user *argp, + int *psp_ret) +{ + int ret; + struct kvm_sev_guest_status params; + struct psp_data_guest_status *status; + + if (!kvm_sev_guest()) + return -ENOTTY; + + if (copy_from_user(¶ms, argp, sizeof(*argp))) + return -EFAULT; + + status = kzalloc(sizeof(*status), GFP_KERNEL); + if (!status) + return -ENOMEM; + + status->hdr.buffer_len = sizeof(*status); + status->handle = kvm_sev_handle(); + ret = psp_guest_status(status, psp_ret); + if (ret) { + printk(KERN_ERR "SEV: GUEST_STATUS ret=%d (%#010x)\n", + ret, *psp_ret); + goto err_1; + } + params.policy = status->policy; + params.state = status->state; + + if (copy_to_user(argp, ¶ms, sizeof(*argp))) + ret = -EFAULT; +err_1: + kfree(status); + return ret; +} + static int amd_sev_issue_cmd(struct kvm *kvm, struct kvm_sev_issue_cmd __user *user_data) { @@ -5595,6 +5631,11 @@ static int amd_sev_issue_cmd(struct kvm *kvm, &arg.ret_code); break; } + case KVM_SEV_GUEST_STATUS: { + r = sev_guest_status(kvm, (void *)arg.opaque, + &arg.ret_code); + break; + } default: break; }