From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brijesh Singh Subject: [RFC PATCH v1 21/28] KVM: introduce KVM_SEV_ISSUE_CMD ioctl Date: Mon, 22 Aug 2016 19:28:17 -0400 Message-ID: <147190849706.9523.17127624683768628621.stgit__2461.02315509251$1471908548$gmane$org@brijesh-build-machine> References: <147190820782.9523.4967724730957229273.stgit@brijesh-build-machine> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Received: from mail-cys01nam02on0047.outbound.protection.outlook.com ([104.47.37.47]:59383 "EHLO NAM02-CY1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932193AbcHVX20 (ORCPT ); Mon, 22 Aug 2016 19:28:26 -0400 In-Reply-To: <147190820782.9523.4967724730957229273.stgit@brijesh-build-machine> Sender: linux-crypto-owner@vger.kernel.org List-ID: The ioctl will be used by qemu to issue the Secure Encrypted Virtualization (SEV) guest commands to transition a guest into into SEV-enabled mode. a typical usage: struct kvm_sev_launch_start start; struct kvm_sev_issue_cmd data; data.cmd = KVM_SEV_LAUNCH_START; data.opaque = &start; ret = ioctl(fd, KVM_SEV_ISSUE_CMD, &data); On SEV command failure, data.ret_code will contain the firmware error code. Signed-off-by: Brijesh Singh --- arch/x86/include/asm/kvm_host.h | 3 + arch/x86/kvm/x86.c | 13 ++++ include/uapi/linux/kvm.h | 125 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 141 insertions(+) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 9b885fc..a94e37d 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1040,6 +1040,9 @@ struct kvm_x86_ops { void (*cancel_hv_timer)(struct kvm_vcpu *vcpu); void (*setup_mce)(struct kvm_vcpu *vcpu); + + int (*sev_issue_cmd)(struct kvm *kvm, + struct kvm_sev_issue_cmd __user *argp); }; struct kvm_arch_async_pf { diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index d6f2f4b..0c0adad 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3820,6 +3820,15 @@ split_irqchip_unlock: return r; } +static int kvm_vm_ioctl_sev_issue_cmd(struct kvm *kvm, + struct kvm_sev_issue_cmd __user *argp) +{ + if (kvm_x86_ops->sev_issue_cmd) + return kvm_x86_ops->sev_issue_cmd(kvm, argp); + + return -ENOTTY; +} + long kvm_arch_vm_ioctl(struct file *filp, unsigned int ioctl, unsigned long arg) { @@ -4085,6 +4094,10 @@ long kvm_arch_vm_ioctl(struct file *filp, r = kvm_vm_ioctl_enable_cap(kvm, &cap); break; } + case KVM_SEV_ISSUE_CMD: { + r = kvm_vm_ioctl_sev_issue_cmd(kvm, argp); + break; + } default: r = kvm_vm_ioctl_assigned_device(kvm, ioctl, arg); } diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 300ef25..72c18c3 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -1274,6 +1274,131 @@ struct kvm_s390_ucas_mapping { /* Available with KVM_CAP_X86_SMM */ #define KVM_SMI _IO(KVMIO, 0xb7) +/* Secure Encrypted Virtualization mode */ +enum sev_cmd { + KVM_SEV_LAUNCH_START = 0, + KVM_SEV_LAUNCH_UPDATE, + KVM_SEV_LAUNCH_FINISH, + KVM_SEV_GUEST_STATUS, + KVM_SEV_DBG_DECRYPT, + KVM_SEV_DBG_ENCRYPT, + KVM_SEV_RECEIVE_START, + KVM_SEV_RECEIVE_UPDATE, + KVM_SEV_RECEIVE_FINISH, + KVM_SEV_SEND_START, + KVM_SEV_SEND_UPDATE, + KVM_SEV_SEND_FINISH, + KVM_SEV_API_VERSION, + KVM_SEV_NR_MAX, +}; + +struct kvm_sev_issue_cmd { + __u32 cmd; + __u64 opaque; + __u32 ret_code; +}; + +struct kvm_sev_launch_start { + __u32 handle; + __u32 flags; + __u32 policy; + __u8 nonce[16]; + __u8 dh_pub_qx[32]; + __u8 dh_pub_qy[32]; +}; + +struct kvm_sev_launch_update { + __u64 address; + __u32 length; +}; + +struct kvm_sev_launch_finish { + __u32 vcpu_count; + __u32 vcpu_length; + __u64 vcpu_mask_addr; + __u32 vcpu_mask_length; + __u8 measurement[32]; +}; + +struct kvm_sev_guest_status { + __u32 policy; + __u32 state; +}; + +struct kvm_sev_dbg_decrypt { + __u64 src_addr; + __u64 dst_addr; + __u32 length; +}; + +struct kvm_sev_dbg_encrypt { + __u64 src_addr; + __u64 dst_addr; + __u32 length; +}; + +struct kvm_sev_receive_start { + __u32 handle; + __u32 flags; + __u32 policy; + __u8 policy_meas[32]; + __u8 wrapped_tek[24]; + __u8 wrapped_tik[24]; + __u8 ten[16]; + __u8 dh_pub_qx[32]; + __u8 dh_pub_qy[32]; + __u8 nonce[16]; +}; + +struct kvm_sev_receive_update { + __u8 iv[16]; + __u64 address; + __u32 length; +}; + +struct kvm_sev_receive_finish { + __u8 measurement[32]; +}; + +struct kvm_sev_send_start { + __u8 nonce[16]; + __u32 policy; + __u8 policy_meas[32]; + __u8 wrapped_tek[24]; + __u8 wrapped_tik[24]; + __u8 ten[16]; + __u8 iv[16]; + __u32 flags; + __u8 api_major; + __u8 api_minor; + __u32 serial; + __u8 dh_pub_qx[32]; + __u8 dh_pub_qy[32]; + __u8 pek_sig_r[32]; + __u8 pek_sig_s[32]; + __u8 cek_sig_r[32]; + __u8 cek_sig_s[32]; + __u8 cek_pub_qx[32]; + __u8 cek_pub_qy[32]; + __u8 ask_sig_r[32]; + __u8 ask_sig_s[32]; + __u32 ncerts; + __u32 cert_length; + __u64 certs_addr; +}; + +struct kvm_sev_send_update { + __u32 length; + __u64 src_addr; + __u64 dst_addr; +}; + +struct kvm_sev_send_finish { + __u8 measurement[32]; +}; + +#define KVM_SEV_ISSUE_CMD _IOWR(KVMIO, 0xb8, struct kvm_sev_issue_cmd) + #define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0) #define KVM_DEV_ASSIGN_PCI_2_3 (1 << 1) #define KVM_DEV_ASSIGN_MASK_INTX (1 << 2)