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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 864E0C43603 for ; Wed, 18 Dec 2019 13:19:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 633002176D for ; Wed, 18 Dec 2019 13:19:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727071AbfLRNTH (ORCPT ); Wed, 18 Dec 2019 08:19:07 -0500 Received: from mga05.intel.com ([192.55.52.43]:36888 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726749AbfLRNTH (ORCPT ); Wed, 18 Dec 2019 08:19:07 -0500 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Dec 2019 05:19:06 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,329,1571727600"; d="scan'208";a="266886586" Received: from unknown (HELO localhost) ([10.239.159.128]) by FMSMGA003.fm.intel.com with ESMTP; 18 Dec 2019 05:19:05 -0800 Date: Wed, 18 Dec 2019 21:20:14 +0800 From: Yang Weijiang To: Sean Christopherson Cc: Yang Weijiang , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, jmattson@google.com, yu.c.zhang@linux.intel.com, yu-cheng.yu@intel.com Subject: Re: [PATCH v8 4/7] KVM: VMX: Load CET states on vmentry/vmexit Message-ID: <20191218132014.GA7926@local-michael-cet-test> References: <20191101085222.27997-1-weijiang.yang@intel.com> <20191101085222.27997-5-weijiang.yang@intel.com> <20191210212305.GM15758@linux.intel.com> <20191211015423.GC12845@local-michael-cet-test> <20191211163510.GF5044@linux.intel.com> <20191212010423.GB17570@local-michael-cet-test.sh.intel.com> <20191218003005.GO11771@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191218003005.GO11771@linux.intel.com> User-Agent: Mutt/1.11.3 (2019-02-01) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Dec 17, 2019 at 04:30:05PM -0800, Sean Christopherson wrote: > On Thu, Dec 12, 2019 at 09:04:24AM +0800, Yang Weijiang wrote: > > On Wed, Dec 11, 2019 at 08:35:10AM -0800, Sean Christopherson wrote: > > > Have you tested SMM at all? The interaction between CR0 and CR4 may be > > > problematic for em_rsm() and/or rsm_enter_protected_mode(). > > > > > Not yet, what's an easy way to test code in SMM mode? > > IIRC, SeaBIOS does SMM stuff by default. Thanks Sean. I'll check this part.