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,URIBL_BLOCKED,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 A282FC433DF for ; Wed, 13 May 2020 22:44:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A4B3D204EF for ; Wed, 13 May 2020 22:44:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731599AbgEMWon (ORCPT ); Wed, 13 May 2020 18:44:43 -0400 Received: from mga02.intel.com ([134.134.136.20]:33959 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726383AbgEMWon (ORCPT ); Wed, 13 May 2020 18:44:43 -0400 IronPort-SDR: NA3XLF+amzUZbJK32dm1deaHAZJOL5uSGf+W1FTmSro/fOZoPHnMlI9Q3T7pk1ZRKqwmsQTWTN 0ihmTtpF45sw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 May 2020 15:44:42 -0700 IronPort-SDR: 75n+clq3trnDGuYXadCYxuJGexTpomyQemp5V3sL9ffnUSGV7nOhB5jzvlWTyzIGYeWlj7n4pb AkMIJkg4ysRQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,389,1583222400"; d="scan'208";a="266036069" Received: from cwward1-mobl.amr.corp.intel.com (HELO [10.254.205.248]) ([10.254.205.248]) by orsmga006.jf.intel.com with ESMTP; 13 May 2020 15:44:32 -0700 Subject: Re: [PATCH v5] arch/x86: Update config and kernel doc for MPK feature on AMD To: Babu Moger , corbet@lwn.net, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, pbonzini@redhat.com, sean.j.christopherson@intel.com Cc: 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> 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: <158940940570.47998.17107695356894054769.stgit@naples-babu.amd.com> 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 5/13/20 3:39 PM, Babu Moger wrote: > AMD's next generation of EPYC processors support the MPK (Memory > Protection Keys) feature. > > Add a generic X86_MEMORY_PROTECTION_KEYS config shadowing > X86_INTEL_MEMORY_PROTECTION_KEYS and update the kernel > documentation. > > No functional changes. Thanks for making all those changes: Reviewed-by: Dave Hansen BTW, I'd certainly classify the dependency change as a functional change. I usually save the "No functional changes" blurb for where literally no effect should be noticeable. The folks that don't set CPU_SUP_INTEL will obviously see a functional change here!