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=-7.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,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 08EBBC04AB1 for ; Mon, 13 May 2019 08:02:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D0B242086A for ; Mon, 13 May 2019 08:02:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727875AbfEMICQ (ORCPT ); Mon, 13 May 2019 04:02:16 -0400 Received: from mx1.redhat.com ([209.132.183.28]:45032 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725928AbfEMICQ (ORCPT ); Mon, 13 May 2019 04:02:16 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 3DA3681F01; Mon, 13 May 2019 08:02:16 +0000 (UTC) Received: from localhost (ovpn-12-31.pek2.redhat.com [10.72.12.31]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7558619C6A; Mon, 13 May 2019 08:02:13 +0000 (UTC) Date: Mon, 13 May 2019 16:02:10 +0800 From: Baoquan He To: Borislav Petkov , j-nomura@ce.jp.nec.com Cc: kasong@redhat.com, dyoung@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: <20190513080210.GC16774@MiWiFi-R3L-srv> 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> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190513075006.GB20105@zn.tnic> User-Agent: Mutt/1.10.1 (2018-07-13) X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Mon, 13 May 2019 08:02:16 +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 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 > me repeat all that - you were on CC on *all* threads and messages! > > So we're going to try it again this cycle and if there's no fallout, it > will go upstream. If not, it will have to be fixed. The usual thing. > > And I don't care if Kairui's patch fixes this one problem - judging by > the fragility of this whole thing, it should be hammered on one more > cycle on as many boxes as possible to make sure there's no other SNAFUs. > > So go test it on more machines instead. I've pushed it here: > > https://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git/log/?h=next-merge-window Pingfan has got a machine to reproduce the kexec breakage issue, and applying these two patches fix it. He planned to paste the test result. I will ask him to try this branch if he has time, or I can get his machine to test. Junichi, also have a try on Boris's branch in NEC's test environment? Thanks Baoquan