From nobody Mon Feb 9 19:09:15 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=gmail.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1625707279023383.4480863869651; Wed, 7 Jul 2021 18:21:19 -0700 (PDT) Received: from localhost ([::1]:34358 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m1Ij7-0006gM-U9 for importer@patchew.org; Wed, 07 Jul 2021 21:21:17 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38148) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m1IKs-0002B1-84 for qemu-devel@nongnu.org; Wed, 07 Jul 2021 20:56:17 -0400 Received: from mga03.intel.com ([134.134.136.65]:19084) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m1IKq-0007Kl-HI for qemu-devel@nongnu.org; Wed, 07 Jul 2021 20:56:14 -0400 Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jul 2021 17:55:54 -0700 Received: from ls.sc.intel.com (HELO localhost) ([143.183.96.54]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Jul 2021 17:55:54 -0700 X-IronPort-AV: E=McAfee;i="6200,9189,10038"; a="209462000" X-IronPort-AV: E=Sophos;i="5.84,222,1620716400"; d="scan'208";a="209462000" X-IronPort-AV: E=Sophos;i="5.84,222,1620716400"; d="scan'208";a="423770015" From: isaku.yamahata@gmail.com 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, erdemaktas@google.com Subject: [RFC PATCH v2 08/44] i386/kvm: Skip KVM_X86_SETUP_MCE for TDX guests Date: Wed, 7 Jul 2021 17:54:38 -0700 Message-Id: <50d3b2d8d652fccc49a6235aea77857713874bd9.1625704981.git.isaku.yamahata@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=134.134.136.65; envelope-from=isaku.yamahata@intel.com; helo=mga03.intel.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_ADSP_CUSTOM_MED=0.001, FORGED_GMAIL_RCVD=1, FREEMAIL_FORGED_FROMDOMAIN=0.25, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, NML_ADSP_CUSTOM_MED=0.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: isaku.yamahata@intel.com, isaku.yamahata@gmail.com, kvm@vger.kernel.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1625707279485100002 Content-Type: text/plain; charset="utf-8" From: Isaku Yamahata Despite advertising MCE support to the guest, TDX-SEAM doesn't support injecting #MCs into the guest. All of the associated setup is thus rejected by KVM. Signed-off-by: Isaku Yamahata --- target/i386/kvm/kvm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 27b64dedc2..c29cb420a1 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -1825,7 +1825,8 @@ int kvm_arch_init_vcpu(CPUState *cs) if (((env->cpuid_version >> 8)&0xF) >=3D 6 && (env->features[FEAT_1_EDX] & (CPUID_MCE | CPUID_MCA)) =3D=3D (CPUID_MCE | CPUID_MCA) - && kvm_check_extension(cs->kvm_state, KVM_CAP_MCE) > 0) { + && kvm_check_extension(cs->kvm_state, KVM_CAP_MCE) > 0 + && vm_type !=3D KVM_X86_TDX_VM) { uint64_t mcg_cap, unsupported_caps; int banks; int ret; --=20 2.25.1