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=-17.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 7B739C07E9C for ; Fri, 9 Jul 2021 09:51:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6571F613E4 for ; Fri, 9 Jul 2021 09:51:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232210AbhGIJyL (ORCPT ); Fri, 9 Jul 2021 05:54:11 -0400 Received: from mga05.intel.com ([192.55.52.43]:54438 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232171AbhGIJyJ (ORCPT ); Fri, 9 Jul 2021 05:54:09 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10039"; a="295316520" X-IronPort-AV: E=Sophos;i="5.84,226,1620716400"; d="scan'208";a="295316520" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Jul 2021 02:51:26 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.84,226,1620716400"; d="scan'208";a="498856333" Received: from michael-optiplex-9020.sh.intel.com ([10.239.159.182]) by fmsmga002.fm.intel.com with ESMTP; 09 Jul 2021 02:51:24 -0700 From: Yang Weijiang To: pbonzini@redhat.com, seanjc@google.com, vkuznets@redhat.com, jmattson@google.com, wei.w.wang@intel.com, like.xu.linux@gmail.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Sean Christopherson , Yang Weijiang Subject: [PATCH v5 09/13] KVM: x86: Report XSS as an MSR to be saved if there are supported features Date: Fri, 9 Jul 2021 18:05:07 +0800 Message-Id: <1625825111-6604-10-git-send-email-weijiang.yang@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1625825111-6604-1-git-send-email-weijiang.yang@intel.com> References: <1625825111-6604-1-git-send-email-weijiang.yang@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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 5f2e13c9f507..c225260c949e 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1299,6 +1299,7 @@ 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)]; @@ -6058,6 +6059,10 @@ 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; } -- 2.21.1