diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0075-KVM-SVM-Add-support-for-KVM_SEV_LAUNCH_MEASURE-comma.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0075-KVM-SVM-Add-support-for-KVM_SEV_LAUNCH_MEASURE-comma.patch | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0075-KVM-SVM-Add-support-for-KVM_SEV_LAUNCH_MEASURE-comma.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0075-KVM-SVM-Add-support-for-KVM_SEV_LAUNCH_MEASURE-comma.patch new file mode 100644 index 00000000..2a9ccbd7 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0075-KVM-SVM-Add-support-for-KVM_SEV_LAUNCH_MEASURE-comma.patch @@ -0,0 +1,125 @@ +From ff79313c254df3bc3ca79168e30a75d15e39439a Mon Sep 17 00:00:00 2001 +From: Brijesh Singh <brijesh.singh@amd.com> +Date: Mon, 4 Dec 2017 10:57:36 -0600 +Subject: [PATCH 75/95] KVM: SVM: Add support for KVM_SEV_LAUNCH_MEASURE + command +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The command is used to retrieve the measurement of contents encrypted +through the KVM_SEV_LAUNCH_UPDATE_DATA command. + +Cc: Thomas Gleixner <tglx@linutronix.de> +Cc: Ingo Molnar <mingo@redhat.com> +Cc: "H. Peter Anvin" <hpa@zytor.com> +Cc: Paolo Bonzini <pbonzini@redhat.com> +Cc: "Radim Krčmář" <rkrcmar@redhat.com> +Cc: Joerg Roedel <joro@8bytes.org> +Cc: Borislav Petkov <bp@suse.de> +Cc: Tom Lendacky <thomas.lendacky@amd.com> +Cc: x86@kernel.org +Cc: kvm@vger.kernel.org +Cc: linux-kernel@vger.kernel.org +Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> +Reviewed-by: Borislav Petkov <bp@suse.de> +Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com> +--- + arch/x86/kvm/svm.c | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ + 1 file changed, 74 insertions(+) + +diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c +index bdc08e2..86e255b 100755 +--- a/arch/x86/kvm/svm.c ++++ b/arch/x86/kvm/svm.c +@@ -6148,6 +6148,77 @@ static int sev_launch_update_data(struct kvm *kvm, struct kvm_sev_cmd *argp) + return ret; + } + ++static int sev_launch_measure(struct kvm *kvm, struct kvm_sev_cmd *argp) ++{ ++ struct kvm_sev_info *sev = &kvm->arch.sev_info; ++ struct sev_data_launch_measure *data; ++ struct kvm_sev_launch_measure params; ++ void *blob = NULL; ++ int ret; ++ ++ if (!sev_guest(kvm)) ++ return -ENOTTY; ++ ++ if (copy_from_user(¶ms, (void __user *)(uintptr_t)argp->data, sizeof(params))) ++ return -EFAULT; ++ ++ data = kzalloc(sizeof(*data), GFP_KERNEL); ++ if (!data) ++ return -ENOMEM; ++ ++ /* User wants to query the blob length */ ++ if (!params.len) ++ goto cmd; ++ ++ if (params.uaddr) { ++ if (params.len > SEV_FW_BLOB_MAX_SIZE) { ++ ret = -EINVAL; ++ goto e_free; ++ } ++ ++ if (!access_ok(VERIFY_WRITE, params.uaddr, params.len)) { ++ ret = -EFAULT; ++ goto e_free; ++ } ++ ++ ret = -ENOMEM; ++ blob = kmalloc(params.len, GFP_KERNEL); ++ if (!blob) ++ goto e_free; ++ ++ data->address = __psp_pa(blob); ++ data->len = params.len; ++ } ++ ++cmd: ++ data->handle = sev->handle; ++ ret = sev_issue_cmd(kvm, SEV_CMD_LAUNCH_MEASURE, data, &argp->error); ++ ++ /* ++ * If we query the session length, FW responded with expected data. ++ */ ++ if (!params.len) ++ goto done; ++ ++ if (ret) ++ goto e_free_blob; ++ ++ if (blob) { ++ if (copy_to_user((void __user *)(uintptr_t)params.uaddr, blob, params.len)) ++ ret = -EFAULT; ++ } ++ ++done: ++ params.len = data->len; ++ if (copy_to_user((void __user *)(uintptr_t)argp->data, ¶ms, sizeof(params))) ++ ret = -EFAULT; ++e_free_blob: ++ kfree(blob); ++e_free: ++ kfree(data); ++ return ret; ++} ++ + static int svm_mem_enc_op(struct kvm *kvm, void __user *argp) + { + struct kvm_sev_cmd sev_cmd; +@@ -6171,6 +6242,9 @@ static int svm_mem_enc_op(struct kvm *kvm, void __user *argp) + case KVM_SEV_LAUNCH_UPDATE_DATA: + r = sev_launch_update_data(kvm, &sev_cmd); + break; ++ case KVM_SEV_LAUNCH_MEASURE: ++ r = sev_launch_measure(kvm, &sev_cmd); ++ break; + default: + r = -EINVAL; + goto out; +-- +2.7.4 + |