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[23.128.96.18]) by mx.google.com with ESMTP id bz23si10638736ejc.195.2020.07.14.11.57.43; Tue, 14 Jul 2020 11:58:07 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731017AbgGNS4l (ORCPT + 99 others); Tue, 14 Jul 2020 14:56:41 -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.