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,NICE_REPLY_A,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 35898C433E4 for ; Tue, 14 Jul 2020 18:56:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1783122B2B for ; Tue, 14 Jul 2020 18:56:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731021AbgGNS4n (ORCPT ); Tue, 14 Jul 2020 14:56:43 -0400 Received: from mga01.intel.com ([192.55.52.88]:49953 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730999AbgGNS4f (ORCPT ); Tue, 14 Jul 2020 14:56:35 -0400 IronPort-SDR: snGeDQgmVWJMp5Fd4iWp+X+iE7IP8ko+KX4rCf228/RKrBt3yAhE9iTiJvFI2kxQn36/2t6Gaz lfu3lyONKQiA== X-IronPort-AV: E=McAfee;i="6000,8403,9682"; a="167126375" X-IronPort-AV: E=Sophos;i="5.75,352,1589266800"; d="scan'208";a="167126375" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jul 2020 11:56:35 -0700 IronPort-SDR: IBWiob855Z3wYeyY46vW1ObsQ+wys7Mln78uQlOhp2EiQ01Fsay7tpG8V8Gs0Tggk8AaRJWFha eaz80B1wi4fw== X-IronPort-AV: E=Sophos;i="5.75,352,1589266800"; d="scan'208";a="459796243" Received: from calinapo-mobl.amr.corp.intel.com (HELO [10.255.6.204]) ([10.255.6.204]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jul 2020 11:56:32 -0700 Subject: Re: [RFC PATCH 04/15] x86/pks: Preserve the PKRS MSR on context switch To: Ira Weiny , Peter Zijlstra Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Fenghua Yu , x86@kernel.org, Dave Hansen , Dan Williams , Vishal Verma , Andrew Morton , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvdimm@lists.01.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org References: <20200714070220.3500839-1-ira.weiny@intel.com> <20200714070220.3500839-5-ira.weiny@intel.com> <20200714082701.GO10769@hirez.programming.kicks-ass.net> <20200714185322.GB3008823@iweiny-DESK2.sc.intel.com> From: Dave Hansen Autocrypt: addr=dave.hansen@intel.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200714185322.GB3008823@iweiny-DESK2.sc.intel.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 7/14/20 11:53 AM, Ira Weiny wrote: >>> The PKRS MSR is defined as a per-core register. Just to be clear, PKRS is a per-logical-processor register, just like PKRU. The "per-core" thing here is a typo.