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 CF52EC433E8 for ; Wed, 15 Jul 2020 20:02:49 +0000 (UTC) Received: from mother.openwall.net (mother.openwall.net [195.42.179.200]) by mail.kernel.org (Postfix) with SMTP id 3B1A82067D for ; Wed, 15 Jul 2020 20:02:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3B1A82067D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kernel-hardening-return-19330-kernel-hardening=archiver.kernel.org@lists.openwall.com Received: (qmail 15578 invoked by uid 550); 15 Jul 2020 20:02:41 -0000 Mailing-List: contact kernel-hardening-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Received: (qmail 15558 invoked from network); 15 Jul 2020 20:02:41 -0000 IronPort-SDR: tUgjGVWGFiPDxjyp0szRX/p23euK4qq+d3iia+dulHQr4ywAd19MACytcSGalqDLBELjVJH23f 3FYqFj8zpzRQ== X-IronPort-AV: E=McAfee;i="6000,8403,9683"; a="136708777" X-IronPort-AV: E=Sophos;i="5.75,356,1589266800"; d="scan'208";a="136708777" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False IronPort-SDR: MkLInbnvcc7MzlFRLFR80N9TF9i4byCNeQBBRI8k0z1B4lJxv76xTM1XavfvVhqrC+mI3YeVsJ gxdjPuQGecwA== X-IronPort-AV: E=Sophos;i="5.75,356,1589266800"; d="scan'208";a="324931027" Date: Wed, 15 Jul 2020 19:58:48 +0000 From: "Andersen, John" To: Sean Christopherson 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: <20200715195848.GE25@760745902f30> References: <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> <20200715044129.GA11248@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200715044129.GA11248@linux.intel.com> User-Agent: Mutt/1.5.24 (2015-08-30) On Tue, Jul 14, 2020 at 09:41:29PM -0700, Sean Christopherson wrote: > 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. Ah my bad. Thanks, I'll look into it.