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=-2.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 BE44EC33CB1 for ; Wed, 15 Jan 2020 14:36:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 93F9C222C3 for ; Wed, 15 Jan 2020 14:36:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729044AbgAOOgb (ORCPT ); Wed, 15 Jan 2020 09:36:31 -0500 Received: from foss.arm.com ([217.140.110.172]:38312 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726418AbgAOOgb (ORCPT ); Wed, 15 Jan 2020 09:36:31 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 11C2931B; Wed, 15 Jan 2020 06:36:31 -0800 (PST) Received: from [10.1.196.105] (eglon.cambridge.arm.com [10.1.196.105]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id D2FBC3F68E; Wed, 15 Jan 2020 06:36:28 -0800 (PST) Subject: Re: [PATCH v8 00/25] arm64: MMU enabled kexec relocation To: Pavel Tatashin Cc: Will Deacon , James Morris , Sasha Levin , "Eric W. Biederman" , kexec mailing list , LKML , Jonathan Corbet , Catalin Marinas , Linux ARM , Marc Zyngier , Vladimir Murzin , Matthias Brugger , Bhupesh Sharma , linux-mm , Mark Rutland , steve.capper@arm.com, rfontana@redhat.com, Thomas Gleixner References: <20191204155938.2279686-1-pasha.tatashin@soleen.com> <20200108173225.GA21242@willie-the-truck> From: James Morse Message-ID: <033681cb-9fd2-673d-d282-e7c0973e4523@arm.com> Date: Wed, 15 Jan 2020 14:36:27 +0000 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Pavel, On 08/01/2020 17:59, Pavel Tatashin wrote: > On Wed, Jan 8, 2020 at 12:32 PM Will Deacon wrote: >> On Wed, Dec 04, 2019 at 10:59:13AM -0500, Pavel Tatashin wrote: >>> Many changes compared to version 6, so I decided to send it out now. >>> James Morse raised an important issue to which I do not have a solution >>> yet. But would like to discuss it. (Christmas was badly timed relative to my holiday, so its taken a while for me to catch up) The memory out of range of the idmap? I've posted an RFC here[0] that makes hibernate idmap is ttbr0 page. This should let you reuse that code and test it without a machine with a funny memory layout. Thanks, James [0] https://lore.kernel.org/linux-arm-kernel/20200115143322.214247-1-james.morse@arm.com/