From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mx1.redhat.com ([209.132.183.28]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hQOCH-0007Hu-0Y for kexec@lists.infradead.org; Tue, 14 May 2019 03:33:46 +0000 Date: Tue, 14 May 2019 11:33:38 +0800 From: Baoquan He Subject: Re: [PATCH v6 1/2] x86/kexec: Build identity mapping for EFI systab and ACPI tables Message-ID: <20190514033338.GA6612@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> <20190513080653.GD16774@MiWiFi-R3L-srv> <20190514032208.GA25875@dhcp-128-65.nay.redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190514032208.GA25875@dhcp-128-65.nay.redhat.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Dave Young , dirk.vandermerwe@netronome.com, j-nomura@ce.jp.nec.com Cc: fanc.fnst@cn.fujitsu.com, kasong@redhat.com, x86@kernel.org, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Borislav Petkov , hpa@zytor.com, tglx@linutronix.de 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. > > Another thing is we can move the get rsdp after console_init, but that > can be done later as separate patch. Yes, agree. _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec