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=-2.3 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 1170CC433E0 for ; Tue, 26 May 2020 15:33:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DF61F20663 for ; Tue, 26 May 2020 15:33:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729652AbgEZPdr (ORCPT ); Tue, 26 May 2020 11:33:47 -0400 Received: from mga05.intel.com ([192.55.52.43]:13369 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727898AbgEZPdq (ORCPT ); Tue, 26 May 2020 11:33:46 -0400 IronPort-SDR: hzG5JAQAcnX16NXrlVBVUYrMGunCsg3k/g4g7/kscG23i7uVb3gjFMewyI1RLJVwALABzvX4c6 tjqcrEhbaDgw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 May 2020 08:33:45 -0700 IronPort-SDR: nRnoLIoNHfPkKLn4f9P3ixflHY/LfK8O2t0bt5XrmJ3yMKcapWyMAQzjd5MjHsxypE/CTaz6dh qtXgDIX5nIwg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,437,1583222400"; d="scan'208";a="270112433" Received: from mashaikh-mobl1.amr.corp.intel.com (HELO [10.255.1.194]) ([10.255.1.194]) by orsmga006.jf.intel.com with ESMTP; 26 May 2020 08:33:36 -0700 Subject: Re: [PATCH v5] arch/x86: Update config and kernel doc for MPK feature on AMD To: Borislav Petkov , Babu Moger Cc: corbet@lwn.net, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, pbonzini@redhat.com, sean.j.christopherson@intel.com, x86@kernel.org, vkuznets@redhat.com, wanpengli@tencent.com, jmattson@google.com, joro@8bytes.org, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, mchehab+samsung@kernel.org, changbin.du@intel.com, namit@vmware.com, bigeasy@linutronix.de, yang.shi@linux.alibaba.com, asteinhauser@google.com, anshuman.khandual@arm.com, jan.kiszka@siemens.com, akpm@linux-foundation.org, steven.price@arm.com, rppt@linux.vnet.ibm.com, peterx@redhat.com, dan.j.williams@intel.com, arjunroy@google.com, logang@deltatee.com, thellstrom@vmware.com, aarcange@redhat.com, justin.he@arm.com, robin.murphy@arm.com, ira.weiny@intel.com, keescook@chromium.org, jgross@suse.com, andrew.cooper3@citrix.com, pawan.kumar.gupta@linux.intel.com, fenghua.yu@intel.com, vineela.tummalapalli@intel.com, yamada.masahiro@socionext.com, sam@ravnborg.org, acme@redhat.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org References: <158940940570.47998.17107695356894054769.stgit@naples-babu.amd.com> <20200523122149.GF27431@zn.tnic> From: Dave Hansen Autocrypt: addr=dave.hansen@intel.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <20200523122149.GF27431@zn.tnic> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/23/20 5:21 AM, Borislav Petkov wrote: >> +config X86_MEMORY_PROTECTION_KEYS >> + # Set the "INTEL_"-free option whenever the "INTEL_" one is set. >> + # The "INTEL_" one should be removed and replaced by this option >> + # after 5.10. This avoids exposing most 'oldconfig' users to this >> + # churn. >> + def_bool X86_INTEL_MEMORY_PROTECTION_KEYS > I only picked up the discussion from the sidelines but why do we need > this at all? If we don't want to have churn, then we can leave it be > called X86_INTEL_MEMORY_PROTECTION_KEYS, not change the manpage and > have this depend on CPU_SUP_AMD too so that people can select it on AMD > machines, and get on with our lives. > > So what's up? Thanks for pointing that out. I think this ended up mixing together the two alternative, which doesn't make much sense. Babu, let's just leave the config option _naming_ entirely in place. The only change should be to the dependencies and the description text.