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=-8.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 26978C433DF for ; Tue, 25 Aug 2020 00:58:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0844F20882 for ; Tue, 25 Aug 2020 00:58:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728343AbgHYA6R (ORCPT ); Mon, 24 Aug 2020 20:58:17 -0400 Received: from mga12.intel.com ([192.55.52.136]:21060 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726041AbgHYA6Q (ORCPT ); Mon, 24 Aug 2020 20:58:16 -0400 IronPort-SDR: Wnm/HaDrGjET4+3aUAC4MeTygxWI2pqEh5DyOYmdh/ISSOvU/LnS0Y3lrj2nk+ypOqNB0Ho1Eb Mx/wqVYtVkdA== X-IronPort-AV: E=McAfee;i="6000,8403,9723"; a="135565434" X-IronPort-AV: E=Sophos;i="5.76,350,1592895600"; d="scan'208";a="135565434" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Aug 2020 17:58:15 -0700 IronPort-SDR: 2eKQQQwP2WrZWLeQXIWU6xAWF65uFSrWjZ16L1zEz0Bkgab5pTRE4pUh9uc2cl2TXCL6mEKJ/8 FIX6oXWkVx1g== X-IronPort-AV: E=Sophos;i="5.76,350,1592895600"; d="scan'208";a="281352562" Received: from sjchrist-ice.jf.intel.com (HELO sjchrist-ice) ([10.54.31.34]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Aug 2020 17:58:15 -0700 Date: Mon, 24 Aug 2020 17:58:13 -0700 From: Sean Christopherson To: Wanpeng Li Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Paolo Bonzini , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel Subject: Re: [PATCH v2 2/2] KVM: LAPIC: Guarantee the timer is in tsc-deadline mode when setting Message-ID: <20200825005813.GE15046@sjchrist-ice> References: <1597213838-8847-1-git-send-email-wanpengli@tencent.com> <1597213838-8847-2-git-send-email-wanpengli@tencent.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1597213838-8847-2-git-send-email-wanpengli@tencent.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Wed, Aug 12, 2020 at 02:30:38PM +0800, Wanpeng Li wrote: > From: Wanpeng Li > > Check apic_lvtt_tscdeadline() mode directly instead of apic_lvtt_oneshot() > and apic_lvtt_period() to guarantee the timer is in tsc-deadline mode when > wrmsr MSR_IA32_TSCDEADLINE. > > Signed-off-by: Wanpeng Li > --- Reviewed-by: Sean Christopherson