From patchwork Sun May 10 01:42:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Yang, Weijiang" X-Patchwork-Id: 283073 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B9743C47255 for ; Sun, 10 May 2020 01:42:29 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 805E9208DB for ; Sun, 10 May 2020 01:42:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 805E9208DB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:57288 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jXaz6-0005oe-Mh for qemu-devel@archiver.kernel.org; Sat, 09 May 2020 21:42:28 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:36706) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jXay8-0003oU-Tv for qemu-devel@nongnu.org; Sat, 09 May 2020 21:41:28 -0400 Received: from mga09.intel.com ([134.134.136.24]:59849) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jXay8-0006cQ-0a for qemu-devel@nongnu.org; Sat, 09 May 2020 21:41:28 -0400 IronPort-SDR: F7JXl7uP9UfrxvJ3ggL4alHLKEMoW71ULGQYWaphKKjkg0TEdlrW2ka9AKPcr/YB7oEMXSO+8y rYCFsRir9Ifg== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 May 2020 18:41:21 -0700 IronPort-SDR: cinDRlfI2mB7SBOmzz/Lwzu/cfAxMoVQzslMMWibGFDHzmAhquNfGzh6xGbN4m/JkBAjKU8Z0E ORf6DHVvYc8w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,373,1583222400"; d="scan'208";a="264783135" Received: from unknown (HELO local-michael-cet-test.sh.intel.com) ([10.239.159.128]) by orsmga006.jf.intel.com with ESMTP; 09 May 2020 18:41:20 -0700 From: Yang Weijiang To: qemu-devel@nongnu.org, pbonzini@redhat.com Subject: [Qemu-devel][PATCH v5 3/4] x86/cpuid: Add support for XSAVES dependent feature enumeration Date: Sun, 10 May 2020 09:42:49 +0800 Message-Id: <20200510014250.28111-4-weijiang.yang@intel.com> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20200510014250.28111-1-weijiang.yang@intel.com> References: <20200510014250.28111-1-weijiang.yang@intel.com> Received-SPF: pass client-ip=134.134.136.24; envelope-from=weijiang.yang@intel.com; helo=mga09.intel.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/09 21:41:17 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] 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, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN 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 Weijiang Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Currently XSAVES dependent features are not supported in CPUID enumeration, update CPUID(0xD,n>=1) to enable it. CET XSAVES related enumeration includes: CPUID(0xD,1):ECX[bit 11]: user mode CET state, controls bit 11 in XSS. CPUID(0xD,1):ECX[bit 12]: supervisor mode CET state, controls bit 12 in XSS. CPUID(0xD,11): user mode CET state sub-leaf, reports the state size. CPUID(0xD,12): supervisor mode CE state sub-leaf, reports the state size. Signed-off-by: Zhang Yi Signed-off-by: Yang Weijiang --- target/i386/cpu.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 3174e05482..881c84a3b3 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1513,6 +1513,12 @@ static inline uint64_t x86_cpu_xsave_components(X86CPU *cpu) cpu->env.features[FEAT_XSAVE_COMP_LO]; } +static inline uint64_t x86_cpu_xsave_sv_components(X86CPU *cpu) +{ + return ((uint64_t)cpu->env.features[FEAT_XSAVES_HI]) << 32 | + cpu->env.features[FEAT_XSAVES_LO]; +} + const char *get_register_name_32(unsigned int reg) { if (reg >= CPU_NB_REGS32) { @@ -5722,13 +5728,22 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, */ *ebx = kvm_enabled() ? *ecx : xsave_area_size(env->xcr0); } else if (count == 1) { + /* ebx is updated in kvm.*/ *eax = env->features[FEAT_XSAVE]; + *ecx = env->features[FEAT_XSAVES_LO]; + *edx = env->features[FEAT_XSAVES_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; } @@ -6280,8 +6295,10 @@ static void x86_cpu_enable_xsave_components(X86CPU *cpu) } } - env->features[FEAT_XSAVE_COMP_LO] = mask; + env->features[FEAT_XSAVE_COMP_LO] = mask & CPUID_XSTATE_USER_MASK; env->features[FEAT_XSAVE_COMP_HI] = mask >> 32; + env->features[FEAT_XSAVES_LO] = mask & CPUID_XSTATE_KERNEL_MASK; + env->features[FEAT_XSAVES_HI] = mask >> 32; } /***** Steps involved on loading and filtering CPUID data