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=-12.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 0AACCC2D0A8 for ; Wed, 23 Sep 2020 18:05:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B89E02075B for ; Wed, 23 Sep 2020 18:05:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726960AbgIWSFV (ORCPT ); Wed, 23 Sep 2020 14:05:21 -0400 Received: from mga02.intel.com ([134.134.136.20]:16542 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726600AbgIWSEP (ORCPT ); Wed, 23 Sep 2020 14:04:15 -0400 IronPort-SDR: chf+stAV9PLR/PM6FHkVhP1JZpAXxuYiNK7LcsLB3kKVF9kRSpfBy9FKKfdiY5JW/+81ikg0p6 KG4e5ptSKKNQ== X-IronPort-AV: E=McAfee;i="6000,8403,9753"; a="148637138" X-IronPort-AV: E=Sophos;i="5.77,293,1596524400"; d="scan'208";a="148637138" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Sep 2020 11:04:12 -0700 IronPort-SDR: q1WeNgmHjf5+QY7p//TdKZzQvlT8meVf0Ubk5TISC/rm/33xll1ExtYt62+Rq9jlVfIpwEuRev rOie6SPhJKRg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,293,1596524400"; d="scan'208";a="322670288" Received: from sjchrist-coffee.jf.intel.com ([10.54.74.160]) by orsmga002.jf.intel.com with ESMTP; 23 Sep 2020 11:04:11 -0700 From: Sean Christopherson To: Paolo Bonzini Cc: Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 09/15] KVM: VMX: Check guest support for RDTSCP before processing MSR_TSC_AUX Date: Wed, 23 Sep 2020 11:04:03 -0700 Message-Id: <20200923180409.32255-10-sean.j.christopherson@intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200923180409.32255-1-sean.j.christopherson@intel.com> References: <20200923180409.32255-1-sean.j.christopherson@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Check for RDTSCP support prior to checking if MSR_TSC_AUX is in the uret MSRs array so that the array lookup and manipulation are back-to-back. This paves the way toward adding a helper to wrap the lookup and manipulation. No functional change intended. Signed-off-by: Sean Christopherson --- arch/x86/kvm/vmx/vmx.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index ca41ee8fac5d..ed9ce25d3807 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -1722,9 +1722,11 @@ static void setup_msrs(struct vcpu_vmx *vmx) index = __vmx_find_uret_msr(vmx, MSR_EFER); if (index >= 0 && update_transition_efer(vmx, index)) move_msr_up(vmx, index, nr_active_uret_msrs++); - index = __vmx_find_uret_msr(vmx, MSR_TSC_AUX); - if (index >= 0 && guest_cpuid_has(&vmx->vcpu, X86_FEATURE_RDTSCP)) - move_msr_up(vmx, index, nr_active_uret_msrs++); + if (guest_cpuid_has(&vmx->vcpu, X86_FEATURE_RDTSCP)) { + index = __vmx_find_uret_msr(vmx, MSR_TSC_AUX); + if (index >= 0) + move_msr_up(vmx, index, nr_active_uret_msrs++); + } index = __vmx_find_uret_msr(vmx, MSR_IA32_TSX_CTRL); if (index >= 0) move_msr_up(vmx, index, nr_active_uret_msrs++); -- 2.28.0