From nobody Mon Feb 9 16:19:33 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=1619765077; cv=none; d=zohomail.com; s=zohoarc; b=HhGSKQZe6d5Ugf+q4Lp4vVYkQnnXUKR4Bru+1UwNoIGDM4qfP/hYVhsXHP3wUAxyNEz5wwy2tocgpbwjN3d+8nMci7J28Kkc094P8qyosh1hw6iKLlkuZq/AyvGm6Iiaj5TWbTAIrSD9BoN7hdtripOqoQbOadBLHlHV7OCQmb8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1619765077; 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=CS6sl8c1CF5mSPopJfz0FcZTQyhmTmhioG6idAN8G+8=; b=Mlzkdqjd0GN5Bg/Cgln1NP7qaMe4viJTN6GzV6KubIGMlq6uJL54ZML7A3hm3jRwm/keXtxAI54BkZgGMmLcLXCBwIgtQTOtcXyr7sth1RMNs5hL+EV0mdPZytC0P7Oz/Hg9CV9H3s6vzickKOYY/FBt5/6EtgBHfY9t+GhU38c= 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 1619765077654174.7113911871877; Thu, 29 Apr 2021 23:44:37 -0700 (PDT) Received: from localhost ([::1]:48628 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lcMtA-0004hM-FK for importer@patchew.org; Fri, 30 Apr 2021 02:44:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45944) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lcMeL-0004gg-5g for qemu-devel@nongnu.org; Fri, 30 Apr 2021 02:29:18 -0400 Received: from mga11.intel.com ([192.55.52.93]:63439) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lcMeB-00016y-JK for qemu-devel@nongnu.org; Fri, 30 Apr 2021 02:29:16 -0400 Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Apr 2021 23:28:38 -0700 Received: from icx-2s.bj.intel.com ([10.240.192.119]) by orsmga003.jf.intel.com with ESMTP; 29 Apr 2021 23:28:37 -0700 IronPort-SDR: AlcbbZOiIMwMnTorQ4WE1YQcFXK5eLjlm/eZDPSw+gIm0w10aebmdW4W8nmQb6LYJaXc/o5ZZc pTHmnWkE1sBA== X-IronPort-AV: E=McAfee;i="6200,9189,9969"; a="194023076" X-IronPort-AV: E=Sophos;i="5.82,260,1613462400"; d="scan'208";a="194023076" IronPort-SDR: SpR9BkzZcP3fIFITu3MfG0p1ghNud5CLStwYAxoNxWugeIINvFxceCbV0vky98UyzZOX+c4kUT Pny/Mmej4jCw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,260,1613462400"; d="scan'208";a="387258498" From: Yang Zhong To: qemu-devel@nongnu.org Subject: [RESEND PATCH 14/32] i386: kvm: Add support for exposing PROVISIONKEY to guest Date: Fri, 30 Apr 2021 14:24:37 +0800 Message-Id: <20210430062455.8117-15-yang.zhong@intel.com> X-Mailer: git-send-email 2.29.2.334.gfaefdd61ec In-Reply-To: <20210430062455.8117-1-yang.zhong@intel.com> References: <20210430062455.8117-1-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=192.55.52.93; envelope-from=yang.zhong@intel.com; helo=mga11.intel.com X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, 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 If the guest want to fully use SGX, the guest needs to be able to access provisioning key. Add a new KVM_CAP_SGX_ATTRIBUTE to KVM to support provisioning key to KVM guests. Signed-off-by: Sean Christopherson Signed-off-by: Yang Zhong --- target/i386/cpu.c | 5 ++++- target/i386/kvm/kvm.c | 29 +++++++++++++++++++++++++++++ target/i386/kvm/kvm_i386.h | 2 ++ 3 files changed, 35 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index e630e57f03..63253bf606 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -6015,7 +6015,10 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index,= uint32_t count, *ecx |=3D XSTATE_FP_MASK | XSTATE_SSE_MASK; =20 /* Access to PROVISIONKEY requires additional credentials. */ - *eax &=3D ~(1U << 4); + if ((*eax & (1U << 4)) && + !kvm_enable_sgx_provisioning(cs->kvm_state)) { + *eax &=3D ~(1U << 4); + } } #endif break; diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index fa495a6f9e..c2fba39bd4 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -4555,6 +4555,35 @@ void kvm_arch_update_guest_debug(CPUState *cpu, stru= ct kvm_guest_debug *dbg) } } =20 +static bool has_sgx_provisioning; + +static bool __kvm_enable_sgx_provisioning(KVMState *s) +{ + int fd, ret; + + if (!kvm_vm_check_extension(s, KVM_CAP_SGX_ATTRIBUTE)) { + return false; + } + + fd =3D qemu_open_old("/dev/sgx_provision", O_RDONLY); + if (fd < 0) { + return false; + } + + ret =3D kvm_vm_enable_cap(s, KVM_CAP_SGX_ATTRIBUTE, 0, fd); + if (ret) { + error_report("Could not enable SGX PROVISIONKEY: %s", strerror(-re= t)); + exit(1); + } + close(fd); + return true; +} + +bool kvm_enable_sgx_provisioning(KVMState *s) +{ + return MEMORIZE(__kvm_enable_sgx_provisioning(s), has_sgx_provisioning= ); +} + static bool host_supports_vmx(void) { uint32_t ecx, unused; diff --git a/target/i386/kvm/kvm_i386.h b/target/i386/kvm/kvm_i386.h index dc72508389..7bab91aecb 100644 --- a/target/i386/kvm/kvm_i386.h +++ b/target/i386/kvm/kvm_i386.h @@ -50,4 +50,6 @@ bool kvm_hv_vpindex_settable(void); =20 uint64_t kvm_swizzle_msi_ext_dest_id(uint64_t address); =20 +bool kvm_enable_sgx_provisioning(KVMState *s); + #endif --=20 2.29.2.334.gfaefdd61ec