From patchwork Mon Mar 18 15:11:30 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Yang, Weijiang" X-Patchwork-Id: 10859073 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C3BEE6C2 for ; Tue, 19 Mar 2019 08:21:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AAEF229176 for ; Tue, 19 Mar 2019 08:21:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9F1ED295C6; Tue, 19 Mar 2019 08:21:22 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00,DATE_IN_PAST_12_24, MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 3B88D29176 for ; Tue, 19 Mar 2019 08:21:22 +0000 (UTC) Received: from localhost ([127.0.0.1]:53412 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h69zt-0001do-77 for patchwork-qemu-devel@patchwork.kernel.org; Tue, 19 Mar 2019 04:21:21 -0400 Received: from eggs.gnu.org ([209.51.188.92]:43327) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h69wV-0007bv-P6 for qemu-devel@nongnu.org; Tue, 19 Mar 2019 04:17:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1h69wU-0002om-GZ for qemu-devel@nongnu.org; Tue, 19 Mar 2019 04:17:51 -0400 Received: from mga07.intel.com ([134.134.136.100]:44381) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1h69wT-0002XS-Ng for qemu-devel@nongnu.org; Tue, 19 Mar 2019 04:17:50 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Mar 2019 01:17:42 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,497,1544515200"; d="scan'208";a="153013249" Received: from local-michael-cet-test.sh.intel.com ([10.239.159.128]) by fmsmga002.fm.intel.com with ESMTP; 19 Mar 2019 01:17:40 -0700 From: Yang Weijiang To: pbonzini@redhat.com, qemu-devel@nongnu.org, mst@redhat.com, cdupontd@redhat.com, rkrcmar@redhat.com, sean.j.christopherson@intel.com Date: Mon, 18 Mar 2019 23:11:30 +0800 Message-Id: <20190318151131.15649-5-weijiang.yang@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190318151131.15649-1-weijiang.yang@intel.com> References: <20190318151131.15649-1-weijiang.yang@intel.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 134.134.136.100 Subject: [Qemu-devel] [RFC PATCH v4 4/5] Report CPUID xsave area support for CET. X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Yang Weijiang , Zhang Yi Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP CPUID bit definition as below: CPUID.(EAX=d, ECX=1):ECX.CET_U(bit 11): user mode state CPUID.(EAX=d, ECX=1):ECX.CET_S(bit 12): kernel mode state Signed-off-by: Zhang Yi Signed-off-by: Yang Weijiang --- target/i386/cpu.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 11dbb9bcc4..ac0ceded89 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -4382,13 +4382,22 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, *edx = env->features[FEAT_XSAVE_COMP_HI]; *ebx = xsave_area_size(env->xcr0); } else if (count == 1) { + /* ebx is updated in kvm.*/ *eax = env->features[FEAT_XSAVE]; + *ecx = env->features[FEAT_XSAVE_SV_LO]; + *edx = env->features[FEAT_XSAVE_SV_HI]; } else if (count < ARRAY_SIZE(x86_ext_save_areas)) { if ((x86_cpu_xsave_components(cpu) >> count) & 1) { const ExtSaveArea *esa = &x86_ext_save_areas[count]; *eax = esa->size; *ebx = esa->offset; } + if ((x86_cpu_xsave_sv_components(cpu) >> count) & 1) { + const ExtSaveArea *esa_sv = &x86_ext_save_areas[count]; + *eax = esa_sv->size; + *ebx = 0; + *ecx = 1; + } } break; }