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=-1.0 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 1C531C072B5 for ; Tue, 21 May 2019 21:55:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D626D2184C for ; Tue, 21 May 2019 21:55:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=netronome-com.20150623.gappssmtp.com header.i=@netronome-com.20150623.gappssmtp.com header.b="O3J3IiZh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727559AbfEUVzC (ORCPT ); Tue, 21 May 2019 17:55:02 -0400 Received: from mail-pf1-f195.google.com ([209.85.210.195]:39236 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727174AbfEUVzB (ORCPT ); Tue, 21 May 2019 17:55:01 -0400 Received: by mail-pf1-f195.google.com with SMTP id z26so137124pfg.6 for ; Tue, 21 May 2019 14:55:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=netronome-com.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-transfer-encoding:content-language; bh=rVLanPSf7IgKvhY0KijI1QM75WnUf0t3XqlmcH7VqBQ=; b=O3J3IiZhKiNxPSSKsaEdABEJjWCDGtEge+p5Bv74A40Lguj1fFzMPlOXMAqvdGm2Sn 96tz8ynCDv+EKT3VBuviPObPWoOWkpQySevpTXsDTVzFRPnFYZ6iIuOwBRFqwIkv9c7q DcIIQa46zUIiAX8Tjig2AZUBAdLgv4+JgXIzYlBS98mcRRI2GxtedH+UGshTaeQ1eYSQ 2KbHx0tzpNY1qQVoKdvb8pNUZaF+It3zigxRJJxBlVFyKbANJ7vlODMFdaSjjp947B0k q3eihZtS9A2lLpMPgLLKQ6IAvwcEQl9O/zhZpzUOn3uBzI1gEcR/1WrhPwqY7+hVN/kT npbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding :content-language; bh=rVLanPSf7IgKvhY0KijI1QM75WnUf0t3XqlmcH7VqBQ=; b=Q9BhgXkvZ6Z6jRK3h+I6Ky4NaFiH/VhQSrFEZ/Q2+CANaGxBWwg15oKn04Z9/1vt0i zB10b8Umb2/3AI/cg264U2Cdp19o+pn3ZMkIMRQ8PNH9nsY7psg9Bxk6XqqOu8gXtv1g AJSIYNJMkXyDV7/cdyg4RsnF+NRVO8yrR3KFZP5RFmPJrItub7r9sqrVqY7e/foJhH5u tmTO/JffVPY626FQ2K3mYd+vR6aXaFT9L4K2z9XfXb4cmUfVBe6o1zLl3PvoN9aqCdCm g9YZmwEccSCd3BpGLy9NPyXghXjeWsTA+Ic1IDTlbB5HKhk0NvC8sIG4wSa5CeXCmUIq CwVA== X-Gm-Message-State: APjAAAWmgPqS64gFxftNREu4qVZbVZcU7MxgnKiwUd0BA9uI9yGIgFqM HQ+Eo6qWmSilVqRvxUdjLBqb9w== X-Google-Smtp-Source: APXvYqwy+hWodtg/yBs57pbUzk7WR6gHqZkb8c+GchzFI7Z2aIjZQmIP00cGHUzuXzTP8/Q/wEkm7Q== X-Received: by 2002:a65:610a:: with SMTP id z10mr85831747pgu.54.1558475700862; Tue, 21 May 2019 14:55:00 -0700 (PDT) Received: from [172.22.3.235] ([66.60.152.14]) by smtp.gmail.com with ESMTPSA id i12sm27186257pfd.33.2019.05.21.14.54.59 (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Tue, 21 May 2019 14:54:59 -0700 (PDT) Subject: Re: [PATCH v6 1/2] x86/kexec: Build identity mapping for EFI systab and ACPI tables To: Baoquan He , Dave Young , j-nomura@ce.jp.nec.com Cc: Borislav Petkov , kasong@redhat.com, fanc.fnst@cn.fujitsu.com, x86@kernel.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, hpa@zytor.com, tglx@linutronix.de References: <20190424092944.30481-1-bhe@redhat.com> <20190424092944.30481-2-bhe@redhat.com> <20190429002318.GA25400@MiWiFi-R3L-srv> <20190429135536.GC2324@zn.tnic> <20190513014248.GA16774@MiWiFi-R3L-srv> <20190513070725.GA20105@zn.tnic> <20190513073254.GB16774@MiWiFi-R3L-srv> <20190513075006.GB20105@zn.tnic> <20190513080653.GD16774@MiWiFi-R3L-srv> <20190514032208.GA25875@dhcp-128-65.nay.redhat.com> <20190514033338.GA6612@MiWiFi-R3L-srv> From: Dirk van der Merwe Message-ID: Date: Tue, 21 May 2019 14:53:52 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.5.1 MIME-Version: 1.0 In-Reply-To: <20190514033338.GA6612@MiWiFi-R3L-srv> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 5/13/19 8:33 PM, Baoquan He wrote: > On 05/14/19 at 11:22am, Dave Young wrote: >> On 05/13/19 at 04:06pm, Baoquan He wrote: >>> Hi Dave, >>> >>> On 05/13/19 at 09:50am, Borislav Petkov wrote: >>>> On Mon, May 13, 2019 at 03:32:54PM +0800, Baoquan He wrote: >>>>> This is a critical bug which breaks memory hotplug, >>>> Please concentrate and stop the blabla: >>>> >>>> 36f0c423552d ("x86/boot: Disable RSDP parsing temporarily") >>>> >>>> already explains what the deal is. This code was *purposefully* disabled >>>> because we ran out of time and it broke a couple of machines. Don't make >>> I remember your machine is the one on whihc the issue is reported. Could >>> you also test it and confirm if these all things found ealier are >>> cleared out? >>> >> I did some tests on the laptop, thing is: >> 1. apply the 3 patches (two you posted + Boris's revert commit 52b922c3d49c) >> on latest Linus master branch, everything works fine. >> >> 2. build and test the tip/next-merge-window branch, kernel hangs early >> without output, (both 1st boot and kexec boot) > Thanks, Dave. > > Yeah, I also tested on a HP machine, problem reprodued on the current > master branch when revert commit 52b922c3d49c. > > Then apply these two patches, problem solved. > > Tried boris's next-merge-window branch too, kexec works very well. > > Dirk, Junichi, feel free to add your test result if you have time. I tested this with the patches (plus revert of the workaround) applied against stable 5.1 and it works fine for me there. Thanks! Where can I find the next-merge-window tree? I can test against that too. Best regards Dirk