From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 A010FC4338F for ; Tue, 24 Aug 2021 07:41:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8487761026 for ; Tue, 24 Aug 2021 07:41:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235355AbhHXHlx (ORCPT ); Tue, 24 Aug 2021 03:41:53 -0400 Received: from mga04.intel.com ([192.55.52.120]:59076 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234876AbhHXHls (ORCPT ); Tue, 24 Aug 2021 03:41:48 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10085"; a="215413445" X-IronPort-AV: E=Sophos;i="5.84,346,1620716400"; d="scan'208";a="215413445" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Aug 2021 00:41:01 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,346,1620716400"; d="scan'208";a="473402141" Received: from michael-optiplex-9020.sh.intel.com ([10.239.159.182]) by orsmga008.jf.intel.com with ESMTP; 24 Aug 2021 00:40:58 -0700 From: Yang Weijiang To: pbonzini@redhat.com, jmattson@google.com, seanjc@google.com, like.xu.linux@gmail.com, vkuznets@redhat.com, wei.w.wang@intel.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Sean Christopherson , Yang Weijiang Subject: [PATCH v8 08/15] KVM: x86: Report XSS as an MSR to be saved if there are supported features Date: Tue, 24 Aug 2021 15:56:10 +0800 Message-Id: <1629791777-16430-9-git-send-email-weijiang.yang@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1629791777-16430-1-git-send-email-weijiang.yang@intel.com> References: <1629791777-16430-1-git-send-email-weijiang.yang@intel.com> Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Sean Christopherson Add MSR_IA32_XSS to the list of MSRs reported to userspace if supported_xss is non-zero, i.e. KVM supports at least one XSS based feature. Signed-off-by: Sean Christopherson Signed-off-by: Yang Weijiang Message-Id: <20210203113421.5759-2-weijiang.yang@intel.com> Signed-off-by: Paolo Bonzini --- arch/x86/kvm/x86.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 08a58ef8bec2..2ebb05212652 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1328,6 +1328,7 @@ static const u32 msrs_to_save_all[] = { MSR_ARCH_PERFMON_EVENTSEL0 + 14, MSR_ARCH_PERFMON_EVENTSEL0 + 15, MSR_ARCH_PERFMON_EVENTSEL0 + 16, MSR_ARCH_PERFMON_EVENTSEL0 + 17, MSR_ARCH_LBR_CTL, MSR_ARCH_LBR_DEPTH, + MSR_IA32_XSS, }; static u32 msrs_to_save[ARRAY_SIZE(msrs_to_save_all)]; @@ -6238,6 +6239,10 @@ static void kvm_init_msr_list(void) if (!kvm_cpu_cap_has(X86_FEATURE_ARCH_LBR)) continue; break; + case MSR_IA32_XSS: + if (!supported_xss) + continue; + break; default: break; } -- 2.25.1