From nobody Mon Feb 9 09:34:42 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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1625829544214959.5920304798581; Fri, 9 Jul 2021 04:19:04 -0700 (PDT) Received: from localhost ([::1]:32992 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m1oX8-0006Lf-Tc for importer@patchew.org; Fri, 09 Jul 2021 07:19:02 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38344) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m1oTS-0007hp-1n for qemu-devel@nongnu.org; Fri, 09 Jul 2021 07:15:14 -0400 Received: from mga06.intel.com ([134.134.136.31]:37176) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m1oTO-0005Av-N1 for qemu-devel@nongnu.org; Fri, 09 Jul 2021 07:15:13 -0400 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jul 2021 04:14:44 -0700 Received: from icx-2s.bj.intel.com ([10.240.192.119]) by orsmga002.jf.intel.com with ESMTP; 09 Jul 2021 04:14:42 -0700 X-IronPort-AV: E=McAfee;i="6200,9189,10039"; a="270800810" X-IronPort-AV: E=Sophos;i="5.84,226,1620716400"; d="scan'208";a="270800810" X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,226,1620716400"; d="scan'208";a="428730228" From: Yang Zhong To: qemu-devel@nongnu.org Subject: [PATCH v3 16/33] hw/i386/fw_cfg: Set SGX bits in feature control fw_cfg accordingly Date: Fri, 9 Jul 2021 19:09:38 +0800 Message-Id: <20210709110955.73256-17-yang.zhong@intel.com> X-Mailer: git-send-email 2.29.2.334.gfaefdd61ec In-Reply-To: <20210709110955.73256-1-yang.zhong@intel.com> References: <20210709110955.73256-1-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, seanjc@google.com, kai.huang@intel.com, jarkko@kernel.org, pbonzini@redhat.com, eblake@redhat.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1625829545885100002 Content-Type: text/plain; charset="utf-8" From: Sean Christopherson Request SGX an SGX Launch Control to be enabled in FEATURE_CONTROL when the features are exposed to the guest. Our design is the SGX Launch Control bit will be unconditionally set in FEATURE_CONTROL, which is unlike host bios. Signed-off-by: Sean Christopherson Signed-off-by: Yang Zhong --- hw/i386/fw_cfg.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/hw/i386/fw_cfg.c b/hw/i386/fw_cfg.c index 4e68d5dea4..f6d036dfbe 100644 --- a/hw/i386/fw_cfg.c +++ b/hw/i386/fw_cfg.c @@ -159,7 +159,7 @@ void fw_cfg_build_feature_control(MachineState *ms, FWC= fgState *fw_cfg) { X86CPU *cpu =3D X86_CPU(ms->possible_cpus->cpus[0].cpu); CPUX86State *env =3D &cpu->env; - uint32_t unused, ecx, edx; + uint32_t unused, ebx, ecx, edx; uint64_t feature_control_bits =3D 0; uint64_t *val; =20 @@ -174,6 +174,14 @@ void fw_cfg_build_feature_control(MachineState *ms, FW= CfgState *fw_cfg) feature_control_bits |=3D FEATURE_CONTROL_LMCE; } =20 + cpu_x86_cpuid(env, 0x7, 0, &unused, &ebx, &ecx, &unused); + if (ebx & CPUID_7_0_EBX_SGX) { + feature_control_bits |=3D FEATURE_CONTROL_SGX; + } + if (ecx & CPUID_7_0_ECX_SGX_LC) { + feature_control_bits |=3D FEATURE_CONTROL_SGX_LC; + } + if (!feature_control_bits) { return; } --=20 2.29.2.334.gfaefdd61ec