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=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 2329BC04AA7 for ; Tue, 14 May 2019 03:23:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E3F12208C3 for ; Tue, 14 May 2019 03:23:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726663AbfENDWQ (ORCPT ); Mon, 13 May 2019 23:22:16 -0400 Received: from mx1.redhat.com ([209.132.183.28]:51390 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726379AbfENDWQ (ORCPT ); Mon, 13 May 2019 23:22:16 -0400 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id E13A1C057F8F; Tue, 14 May 2019 03:22:15 +0000 (UTC) Received: from dhcp-128-65.nay.redhat.com (ovpn-12-131.pek2.redhat.com [10.72.12.131]) by smtp.corp.redhat.com (Postfix) with ESMTPS id EDAE71001DD5; Tue, 14 May 2019 03:22:11 +0000 (UTC) Date: Tue, 14 May 2019 11:22:08 +0800 From: Dave Young To: Baoquan He Cc: Borislav Petkov , j-nomura@ce.jp.nec.com, 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 Subject: Re: [PATCH v6 1/2] x86/kexec: Build identity mapping for EFI systab and ACPI tables Message-ID: <20190514032208.GA25875@dhcp-128-65.nay.redhat.com> 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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190513080653.GD16774@MiWiFi-R3L-srv> User-Agent: Mutt/1.11.3 (2019-02-01) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Tue, 14 May 2019 03:22:16 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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) So I think these 3 patches are good, but there could be other issues which is not related to the problem we saw. Another thing is we can move the get rsdp after console_init, but that can be done later as separate patch. Thanks Dave