From nobody Mon Feb 9 11:51:36 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=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1620715230; cv=none; d=zohomail.com; s=zohoarc; b=L+nSkirN6T+D3NuoxOAvk/6TEh4JAl/iRdVP/6DE7/sj9qvqYUEUOPz+jqXHXyo7OpNBQsetenbFdtS6dYH3sCtNqn6spa4jzfiAJU8NCUhpSlfuri/tqDWSZhpXMvbGVuZVDOVOSisJmpU/uKIE4lZfs4d9fiZk1HafDz2OSj4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1620715230; h=Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=/5jp5xQt4AbLjdH3QkXMWXia0njO/ekVfNLyJEHBOj8=; b=OeanI3C7keDTlsNygGpYhp67dV6/2rSbOZx+iVj90jC7vezlsJSpouaV9b1pmnMwLFGwe457C+cAfIYCSF10SXiqc/3bSMbyZDBRB2kGus/Fc+4REZwVr9x2FtHWNS1dzc956KmnZXoO3NVu7p+f8lINTnKOlGbBwW2dfAnaLSY= ARC-Authentication-Results: i=1; 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 header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1620715230410857.2276423162901; Mon, 10 May 2021 23:40:30 -0700 (PDT) Received: from localhost ([::1]:56056 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lgM4D-0005VA-5e for importer@patchew.org; Tue, 11 May 2021 02:40:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40600) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lgLsR-0006L2-W0 for qemu-devel@nongnu.org; Tue, 11 May 2021 02:28:20 -0400 Received: from mga06.intel.com ([134.134.136.31]:46437) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lgLsO-0004hV-IK for qemu-devel@nongnu.org; Tue, 11 May 2021 02:28:19 -0400 Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 May 2021 23:27:58 -0700 Received: from icx-2s.bj.intel.com ([10.240.192.119]) by orsmga003.jf.intel.com with ESMTP; 10 May 2021 23:27:55 -0700 IronPort-SDR: ym0Or6Yj4DMxNNbOZYB4hoCjRLeLNU5Qiq+7QXFGv+IPtEJZYNWaw2om2FW3O7ltWtbMUjn0KJ YjNlzwrcxSfQ== X-IronPort-AV: E=McAfee;i="6200,9189,9980"; a="260631524" X-IronPort-AV: E=Sophos;i="5.82,290,1613462400"; d="scan'208";a="260631524" IronPort-SDR: UKsJWAhxglHanICvHzRzhpn75RwtMdgCwdvZ64HCJXrCPFOgd6pM1qTdwEH8rzunZ7KIJShDPQ XjVzrJCZLv4A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,290,1613462400"; d="scan'208";a="391281221" From: Yang Zhong To: qemu-devel@nongnu.org Subject: [PATCH v2 15/32] i386: Propagate SGX CPUID sub-leafs to KVM Date: Tue, 11 May 2021 14:20:34 +0800 Message-Id: <20210511062051.41948-16-yang.zhong@intel.com> X-Mailer: git-send-email 2.29.2.334.gfaefdd61ec In-Reply-To: <20210511062051.41948-1-yang.zhong@intel.com> References: <20210511062051.41948-1-yang.zhong@intel.com> 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=134.134.136.31; envelope-from=yang.zhong@intel.com; helo=mga06.intel.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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: yang.zhong@intel.com, pbonzini@redhat.com, kai.huang@intel.com, seanjc@google.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" From: Sean Christopherson The SGX sub-leafs are enumerated at CPUID 0x12. Indices 0 and 1 are always present when SGX is supported, and enumerate SGX features and capabilities. Indices >=3D2 are directly correlated with the platform's EPC sections. Because the number of EPC sections is dynamic and user defined, the number of SGX sub-leafs is "NULL" terminated. Signed-off-by: Sean Christopherson Signed-off-by: Yang Zhong --- target/i386/kvm/kvm.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index c2fba39bd4..ecb5f56d95 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -1615,6 +1615,25 @@ int kvm_arch_init_vcpu(CPUState *cs) } break; case 0x7: + case 0x12: + for (j =3D 0; ; j++) { + c->function =3D i; + c->flags =3D KVM_CPUID_FLAG_SIGNIFCANT_INDEX; + c->index =3D j; + cpu_x86_cpuid(env, i, j, &c->eax, &c->ebx, &c->ecx, &c->ed= x); + + if (j > 1 && (c->eax & 0xf) !=3D 1) { + break; + } + + if (cpuid_i =3D=3D KVM_MAX_CPUID_ENTRIES) { + fprintf(stderr, "cpuid_data is full, no space for " + "cpuid(eax:0x12,ecx:0x%x)\n", j); + abort(); + } + c =3D &cpuid_data.entries[cpuid_i++]; + } + break; case 0x14: { uint32_t times; =20 --=20 2.29.2.334.gfaefdd61ec