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 564D5C4363D for ; Thu, 24 Sep 2020 19:42:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1FE0A2399A for ; Thu, 24 Sep 2020 19:42:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726267AbgIXTmz (ORCPT ); Thu, 24 Sep 2020 15:42:55 -0400 Received: from mga18.intel.com ([134.134.136.126]:31793 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725208AbgIXTmz (ORCPT ); Thu, 24 Sep 2020 15:42:55 -0400 IronPort-SDR: zLJCHE2dhFIe648NZH7wi5uvD7Ci/ZSZKiXFKBDDB0lz3Vz71W9Tsoqq8oRVQpWQt6bHtZ4cbY J177IJYOOQnw== X-IronPort-AV: E=McAfee;i="6000,8403,9754"; a="149076387" X-IronPort-AV: E=Sophos;i="5.77,299,1596524400"; d="scan'208";a="149076387" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Sep 2020 12:42:52 -0700 IronPort-SDR: dsuICRaW7RQs8ixQFzR01Icla57G8r4Ce37vrZK30G2Ghw6iTDvDUFeX/G1xSzG9IMvlTeZKyn dEYtQEt/7ZOA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,299,1596524400"; d="scan'208";a="347953045" Received: from sjchrist-coffee.jf.intel.com ([10.54.74.160]) by FMSMGA003.fm.intel.com with ESMTP; 24 Sep 2020 12:42:52 -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 v3 1/5] KVM: VMX: Use precomputed MAXPHYADDR for RTIT base MSR check Date: Thu, 24 Sep 2020 12:42:46 -0700 Message-Id: <20200924194250.19137-2-sean.j.christopherson@intel.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200924194250.19137-1-sean.j.christopherson@intel.com> References: <20200924194250.19137-1-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 Use cpuid_maxphyaddr() instead of cpuid_query_maxphyaddr() for the RTIT base MSR check. There is no reason to recompute MAXPHYADDR as the precomputed version is synchronized with CPUID updates, and MSR_IA32_RTIT_OUTPUT_BASE is not written between stuffing CPUID and refreshing vcpu->arch.maxphyaddr. Signed-off-by: Sean Christopherson --- arch/x86/kvm/vmx/vmx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 6f9a0c6d5dc5..be82da055fc4 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -147,7 +147,7 @@ module_param_named(preemption_timer, enable_preemption_timer, bool, S_IRUGO); RTIT_STATUS_BYTECNT)) #define MSR_IA32_RTIT_OUTPUT_BASE_MASK \ - (~((1UL << cpuid_query_maxphyaddr(vcpu)) - 1) | 0x7f) + (~((1UL << cpuid_maxphyaddr(vcpu)) - 1) | 0x7f) /* * These 2 parameters are used to config the controls for Pause-Loop Exiting: -- 2.28.0