Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933308AbYBNHxS (ORCPT ); Thu, 14 Feb 2008 02:53:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760398AbYBNHxE (ORCPT ); Thu, 14 Feb 2008 02:53:04 -0500 Received: from gw.goop.org ([64.81.55.164]:55661 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760170AbYBNHxC (ORCPT ); Thu, 14 Feb 2008 02:53:02 -0500 Message-ID: <47B3F2DC.8080707@goop.org> Date: Thu, 14 Feb 2008 18:50:52 +1100 From: Jeremy Fitzhardinge User-Agent: Thunderbird 2.0.0.9 (X11/20071115) MIME-Version: 1.0 To: Jeremy Fitzhardinge , Jody Belka , linux-kernel@vger.kernel.org, Ingo Molnar , Thomas Gleixner , Ian Campbell , "H. Peter Anvin" , "Eric W. Biederman" , Andi Kleen , Mika Penttila Subject: Re: 2.6.25-rc1 xen pvops regression References: <20080212235404.GY7980@pimb.org> <47B2DBA5.6030001@goop.org> <20080214022744.GA4160@mail.oracle.com> In-Reply-To: <20080214022744.GA4160@mail.oracle.com> X-Enigmail-Version: 0.95.6 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2485 Lines: 55 Joel Becker wrote: > On Wed, Feb 13, 2008 at 10:59:33PM +1100, Jeremy Fitzhardinge wrote: > >>> I thought I'd try out 2.6.25-rc1 as a xen 32-bit pae domU the other day. >>> Unfortunately, I didn't get very far very fast, as the domain just crashed >>> immediately upon booting, without any direct feedback (I did have messages >>> on the xen message buffer, which helped). This even with earlyprintk turned on. >>> >>> After a long, arduous journey, I managed to track this down to the following: >>> >>> ---------- >>> commit 551889a6e2a24a9c06fd453ea03b57b7746ffdc0 >>> > > I'm seeing the same problem, with no messages at all from xen > other than "domain crashed, restart disabled" in xend.log. I got a > different commit in my bisect, 0947b2f31ca1ea1211d3cde2dbd8fcec579ef395 > (i386 boot: replace boot_io remap with enhanced bt_ioremap - enhance > bt_ioremap). I started from yesterday's > 96b5a46e2a72dc1829370c87053e0cd558d58bc0 (WMI: initialize > wmi_blocks.list even if ACPI is disabled) and a known good > 9b73e76f3cf63379dcf45fcd4f112f5812418d0a (Merge > git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6). > > >> Although I'm on vacation, I happened to download a recent copy of >> x86.git and found that it crashes early. Here's a couple of patches to >> apply; I don't know if they apply to current git, but I hope it helps. >> > > >> Subject: x86/early_ioremap: don't assume we're using swapper_pg_dir >> Subject: xen: unpin initial Xen pagetable once we're finished with it >> > > After my bisect was done, I re-pulled from Linus and discovered > these patches. Searching for these emails, they certainly sound like my > problem. But the kernel does not boot, commit > 10270d4838bdc493781f5a1cf2e90e9c34c9142f (acpi: fix > acpi_os_read_pci_configuration() misuse of raw_pci_read()). Still no > output from Xen - pygrub selects the kernel, and then the domain just > dies back to the dom0 shell. > Attached are my latest .config and my bisect log. > Is the domain ending up in the crashed state? Do you get a register dump with xm dmesg? That would be very useful in determining what went wrong. You may need to compile Xen with debug=y in Config.mk. J -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/