From patchwork Tue Feb 16 02:13:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Isaku Yamahata X-Patchwork-Id: 12089455 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 11A93C433E9 for ; Tue, 16 Feb 2021 02:19:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E14136186A for ; Tue, 16 Feb 2021 02:19:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230049AbhBPCTd (ORCPT ); Mon, 15 Feb 2021 21:19:33 -0500 Received: from mga06.intel.com ([134.134.136.31]:39372 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229959AbhBPCQy (ORCPT ); Mon, 15 Feb 2021 21:16:54 -0500 IronPort-SDR: IjRTl7wD7qCUKrvBqpruMdHhPwMxxc2cvVyz2VU5E6OBhCbuSZqTrwIL+wK7EjCanWOP1/v/we okvzxx9/uKSw== X-IronPort-AV: E=McAfee;i="6000,8403,9896"; a="244270208" X-IronPort-AV: E=Sophos;i="5.81,182,1610438400"; d="scan'208";a="244270208" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Feb 2021 18:14:52 -0800 IronPort-SDR: Y6imeHbdVjt4iWTEtlhYSAY/R8lUn0PatpDmvm2NovtK0pGt/ubFeuhTG21WBjzITGlRdpAbt3 IhudWp4Evskw== X-IronPort-AV: E=Sophos;i="5.81,182,1610438400"; d="scan'208";a="591705426" Received: from ls.sc.intel.com (HELO localhost) ([143.183.96.54]) by fmsmga005-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Feb 2021 18:14:52 -0800 From: Isaku Yamahata To: qemu-devel@nongnu.org, pbonzini@redhat.com, alistair@alistair23.me, ehabkost@redhat.com, marcel.apfelbaum@gmail.com, mst@redhat.com, cohuck@redhat.com, mtosatti@redhat.com, xiaoyao.li@intel.com, seanjc@google.com Cc: kvm@vger.kernel.org, isaku.yamahata@gmail.com, isaku.yamahata@intel.com, Sean Christopherson Subject: [RFC PATCH 14/23] i386/tdx: Frame in the call for KVM_TDX_INIT_VCPU Date: Mon, 15 Feb 2021 18:13:10 -0800 Message-Id: <623e79930a5a49734676f9aeb17e32aa737e7fbd.1613188118.git.isaku.yamahata@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Signed-off-by: Sean Christopherson --- include/sysemu/tdx.h | 1 + target/i386/kvm/kvm.c | 8 ++++++++ target/i386/kvm/tdx-stub.c | 4 ++++ target/i386/kvm/tdx.c | 20 ++++++++++++++++---- 4 files changed, 29 insertions(+), 4 deletions(-) diff --git a/include/sysemu/tdx.h b/include/sysemu/tdx.h index 36a901e723..03461b6ae8 100644 --- a/include/sysemu/tdx.h +++ b/include/sysemu/tdx.h @@ -8,5 +8,6 @@ bool kvm_has_tdx(KVMState *s); #endif void tdx_pre_create_vcpu(CPUState *cpu); +void tdx_post_init_vcpu(CPUState *cpu); #endif diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index e6f7015be8..52dbccedb5 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -4034,6 +4034,14 @@ int kvm_arch_put_registers(CPUState *cpu, int level) assert(cpu_is_stopped(cpu) || qemu_cpu_is_self(cpu)); + /* + * level == KVM_PUT_FULL_STATE is only set by + * kvm_cpu_synchronize_post_init() after initialization + */ + if (vm_type == KVM_X86_TDX_VM && level == KVM_PUT_FULL_STATE) { + tdx_post_init_vcpu(cpu); + } + /* TODO: Allow accessing guest state for debug TDs. */ if (vm_type == KVM_X86_TDX_VM) { return 0; diff --git a/target/i386/kvm/tdx-stub.c b/target/i386/kvm/tdx-stub.c index 93d5913c89..93afe07ddb 100644 --- a/target/i386/kvm/tdx-stub.c +++ b/target/i386/kvm/tdx-stub.c @@ -12,3 +12,7 @@ bool kvm_has_tdx(KVMState *s) void tdx_pre_create_vcpu(CPUState *cpu) { } + +void tdx_post_init_vcpu(CPUState *cpu) +{ +} diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 9d4195a705..d095dab662 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -36,7 +36,7 @@ bool kvm_has_tdx(KVMState *s) return !!(kvm_check_extension(s, KVM_CAP_VM_TYPES) & BIT(KVM_X86_TDX_VM)); } -static void __tdx_ioctl(int ioctl_no, const char *ioctl_name, +static void __tdx_ioctl(void *state, int ioctl_no, const char *ioctl_name, __u32 metadata, void *data) { struct kvm_tdx_cmd tdx_cmd; @@ -49,17 +49,21 @@ static void __tdx_ioctl(int ioctl_no, const char *ioctl_name, tdx_cmd.data = (__u64)(unsigned long)data; if (ioctl_no == KVM_TDX_CAPABILITIES) { - r = kvm_ioctl(kvm_state, KVM_MEMORY_ENCRYPT_OP, &tdx_cmd); + r = kvm_ioctl(state, KVM_MEMORY_ENCRYPT_OP, &tdx_cmd); + } else if (ioctl_no == KVM_TDX_INIT_VCPU) { + r = kvm_vcpu_ioctl(state, KVM_MEMORY_ENCRYPT_OP, &tdx_cmd); } else { - r = kvm_vm_ioctl(kvm_state, KVM_MEMORY_ENCRYPT_OP, &tdx_cmd); + r = kvm_vm_ioctl(state, KVM_MEMORY_ENCRYPT_OP, &tdx_cmd); } if (r) { error_report("%s failed: %s", ioctl_name, strerror(-r)); exit(1); } } +#define _tdx_ioctl(cpu, ioctl_no, metadata, data) \ + __tdx_ioctl(cpu, ioctl_no, stringify(ioctl_no), metadata, data) #define tdx_ioctl(ioctl_no, metadata, data) \ - __tdx_ioctl(ioctl_no, stringify(ioctl_no), metadata, data) + _tdx_ioctl(kvm_state, ioctl_no, metadata, data) static void tdx_finalize_vm(Notifier *notifier, void *unused) { @@ -202,6 +206,14 @@ out: qemu_mutex_unlock(&tdx->lock); } +void tdx_post_init_vcpu(CPUState *cpu) +{ + CPUX86State *env = &X86_CPU(cpu)->env; + + _tdx_ioctl(cpu, KVM_TDX_INIT_VCPU, 0, + (void *)(unsigned long)env->regs[R_ECX]); +} + static bool tdx_guest_get_debug(Object *obj, Error **errp) { TdxGuest *tdx = TDX_GUEST(obj);