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=-5.5 required=3.0 tests=BAYES_00, 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 7167FC433E1 for ; Wed, 15 Jul 2020 04:41:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5A3CA206F4 for ; Wed, 15 Jul 2020 04:41:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726890AbgGOEla (ORCPT ); Wed, 15 Jul 2020 00:41:30 -0400 Received: from mga02.intel.com ([134.134.136.20]:62528 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725770AbgGOEla (ORCPT ); Wed, 15 Jul 2020 00:41:30 -0400 IronPort-SDR: 12fOklgYhmPLyeChR9kPLnlROqNds6tjyEVEu3JgxyKgt2a6P4TLBibmDNAuMwj1E4bHNA2dbS TiZdQs3/MgKg== X-IronPort-AV: E=McAfee;i="6000,8403,9682"; a="137210660" X-IronPort-AV: E=Sophos;i="5.75,354,1589266800"; d="scan'208";a="137210660" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jul 2020 21:41:30 -0700 IronPort-SDR: tPAxt0Zb++8MhxgPdx85urOug4eGehmIUtSsXwHJnIU25SvJTEXBjkPDzwgnNFwqot1XcoyHDU qgn6I8SLpFow== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,354,1589266800"; d="scan'208";a="326050554" Received: from sjchrist-coffee.jf.intel.com (HELO linux.intel.com) ([10.54.74.152]) by orsmga007.jf.intel.com with ESMTP; 14 Jul 2020 21:41:29 -0700 Date: Tue, 14 Jul 2020 21:41:29 -0700 From: Sean Christopherson To: "Andersen, John" Cc: Andy Lutomirski , Arvind Sankar , Dave Hansen , Paolo Bonzini , Jonathan Corbet , Thomas Gleixner , Ingo Molnar , Borislav Petkov , X86 ML , "H. Peter Anvin" , Shuah Khan , Liran Alon , Andrew Jones , Rick Edgecombe , Kristen Carlson Accardi , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Mauro Carvalho Chehab , Greg KH , "Paul E. McKenney" , Pawan Gupta , Juergen Gross , Mike Kravetz , Oliver Neukum , Peter Zijlstra , Fenghua Yu , reinette.chatre@intel.com, vineela.tummalapalli@intel.com, Dave Hansen , Arjan van de Ven , caoj.fnst@cn.fujitsu.com, Baoquan He , Kees Cook , Dan Williams , eric.auger@redhat.com, aaronlewis@google.com, Peter Xu , makarandsonare@google.com, "open list:DOCUMENTATION" , LKML , kvm list , "open list:KERNEL SELFTEST FRAMEWORK" , Kernel Hardening Subject: Re: [PATCH 2/4] KVM: x86: Introduce paravirt feature CR0/CR4 pinning Message-ID: <20200715044129.GA11248@linux.intel.com> References: <124a59a3-a603-701b-e3bb-61e83d70b20d@intel.com> <20200707211244.GN20096@linux.intel.com> <19b97891-bbb0-1061-5971-549a386f7cfb@intel.com> <31eb5b00-9e2a-aa10-0f20-4abc3cd35112@redhat.com> <20200709154412.GA25@64c96d3be97b> <6040c3b3-cac9-cc0e-f0de-baaa274920a2@intel.com> <20200714053930.GC25@760745902f30> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200714053930.GC25@760745902f30> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Tue, Jul 14, 2020 at 05:39:30AM +0000, Andersen, John wrote: > With regards to FSGSBASE, are we open to validating and adding that to the > DEFAULT set as a part of a separate patchset? This patchset is focused on > replicating the functionality we already have natively. Kees added FSGSBASE pinning in commit a13b9d0b97211 ("x86/cpu: Use pinning mask for CR4 bits needing to be 0"), so I believe it's a done deal already.