Received: by 2002:a05:6a10:9848:0:0:0:0 with SMTP id x8csp109385pxf; Wed, 31 Mar 2021 18:21:22 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxniR6YpncWapnG4tvyvbad/TjW6W6eFtGP8pCe4n4kkeQbMPDFAtymQfPE/TVFFdDd0wIx X-Received: by 2002:a17:906:3643:: with SMTP id r3mr6463363ejb.527.1617240081884; Wed, 31 Mar 2021 18:21:21 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1617240081; cv=none; d=google.com; s=arc-20160816; b=AYk7kQbOOyHVFPnhY+d7Y2PMHGoatlxNWL/ifUz2FZYR139QfwyDiza4vkgevwPfES UCoXzdPcn0Z5aQJOpvfTtyBMFpXS6uYaejVxqvr7yU7iuZXbw/dqANsqhygU7reLEKrx TT4YVUZJbAj+Wz/gm2Sevhg271wLLbnT/aTYOU2mzQ8HaE3h79fCNzKZKbF5Y8BbBVe3 wjZFxKK45Mv0UWpFvEagOsyWiAUdouM1SonF/fnxSnA2vrv2KLuyjM1B0ydwx5mHI2my Pf/zVi2KcAiwFHd9bh3ZU2qTppcgCCQby5tYfop2RhSIIcmaoDSH8HRfqM2Q/Bv9KSHm dXhg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :ironport-sdr:ironport-sdr; bh=PDx8vB4xclFGIKsQhcx6DHUo3IXt4XDX8iXaXsdGgIQ=; b=feynLDtK0iqpTrQI/DGFUVHBc8OFDVelRq64npOpubSgjTVpy1MUAqSWxzU8z9A4A/ v23p8UzkC1e0lqeb4a+mNhZBO71Ll0gTwEevjNZNzLi4QIRVfbTniQwVfow2koyNTLm9 PKmjZ3kTOOOa9ac9Fay64cpRRMBO2CKhxBm11pFGLpWbFAUSz0scW+92EkfoH6sgchGu B7c3Rp4uDDDxVRjZooc8Ra8AW3ePciggyj6tWZsPk8RBB7M8K7/JGLkLb4lOnyyhRW42 1l82M+zsuktSlz/YzmE93OMVqzqiWoQAaTPOmAxs4Y3tNuI/VwMy2/MZ4DRe55Ws1UqD sq1g== ARC-Authentication-Results: i=1; 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 Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id u26si3093731ejx.30.2021.03.31.18.20.59; Wed, 31 Mar 2021 18:21:21 -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 S232491AbhDABQM (ORCPT + 99 others); Wed, 31 Mar 2021 21:16:12 -0400 Received: from mga06.intel.com ([134.134.136.31]:54039 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229959AbhDABPl (ORCPT ); Wed, 31 Mar 2021 21:15:41 -0400 IronPort-SDR: J+amwlH/HUZNX2Mb1pdkbMJ7pQU1UN0Aed8+3vZrnt6gS0cmA6r9JqI+d1rzCT8wdWVNCfb8nT jyi1HlYPGKdg== X-IronPort-AV: E=McAfee;i="6000,8403,9940"; a="253462895" X-IronPort-AV: E=Sophos;i="5.81,295,1610438400"; d="scan'208";a="253462895" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Mar 2021 18:15:40 -0700 IronPort-SDR: q84Mbr6GTdcqrEw1OcK8lUatWI/ngVamlhNwOzmHE5VQlQZnfhRDRwcd6YNeZKNJF1V/wnQcuL D5mtcElaznLg== X-IronPort-AV: E=Sophos;i="5.81,295,1610438400"; d="scan'208";a="455748644" Received: from iweiny-desk2.sc.intel.com (HELO localhost) ([10.3.52.147]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 31 Mar 2021 18:15:40 -0700 Date: Wed, 31 Mar 2021 18:15:40 -0700 From: Ira Weiny To: Dave Hansen Cc: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Andy Lutomirski , Peter Zijlstra , Dave Hansen , Dan Williams , x86@kernel.org, linux-kernel@vger.kernel.org, Fenghua Yu , linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH V5 08/10] x86/entry: Preserve PKRS MSR across exceptions Message-ID: <20210401011540.GG3014244@iweiny-DESK2.sc.intel.com> References: <20210331191405.341999-1-ira.weiny@intel.com> <20210331191405.341999-9-ira.weiny@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.11.1 (2018-12-01) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Mar 31, 2021 at 12:31:56PM -0700, Dave Hansen wrote: > On 3/31/21 12:14 PM, ira.weiny@intel.com wrote: > > + * To protect against exceptions having access to this memory we save the > > + * current running value and sets the PKRS value to be used during the > > + * exception. > > This series seems to have grown some "we's". I suppose it has... > > The preexisting pkey code was not innocent in this regard, either. But, > please fix this up across the series in the next submission. Literally > removing "we" from this sentence doesn't change the meaning at all. Sure I can audit the series for this... Waiting a day for other comments. Thanks, Ira