From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752881AbeCETH7 (ORCPT ); Mon, 5 Mar 2018 14:07:59 -0500 Received: from mga05.intel.com ([192.55.52.43]:41707 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751462AbeCETH5 (ORCPT ); Mon, 5 Mar 2018 14:07:57 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.47,428,1515484800"; d="scan'208";a="32575331" Subject: Re: [RFC, PATCH 18/22] x86/mm: Handle allocation of encrypted pages To: "Kirill A. Shutemov" , Ingo Molnar , x86@kernel.org, Thomas Gleixner , "H. Peter Anvin" , Tom Lendacky References: <20180305162610.37510-1-kirill.shutemov@linux.intel.com> <20180305162610.37510-19-kirill.shutemov@linux.intel.com> Cc: Kai Huang , linux-kernel@vger.kernel.org, linux-mm@kvack.org From: Dave Hansen Message-ID: <6551765a-5926-8445-d867-8f7c6bf343b4@intel.com> Date: Mon, 5 Mar 2018 11:07:55 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 MIME-Version: 1.0 In-Reply-To: <20180305162610.37510-19-kirill.shutemov@linux.intel.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/05/2018 08:26 AM, Kirill A. Shutemov wrote: > kmap_atomic_keyid() would map the page with the specified KeyID. > For now it's dummy implementation that would be replaced later. I think you need to explain the tradeoffs here. We could just change the linear map around, but you don't. Why?