From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aurelien Jarno Subject: Re: FreeBSD image hangs during boot Date: Tue, 02 Oct 2007 19:25:57 +0200 Message-ID: <47027F25.80001@aurel32.net> References: <47022E7E.3030509@aurel32.net> <470234DF.6030802@qumranet.com> <470237DC.5060008@aurel32.net> <47027161.50004@qumranet.com> <47027586.9020508@aurel32.net> <47027A01.5080903@aurel32.net> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org To: Avi Kivity Return-path: In-Reply-To: <47027A01.5080903-rXXEIb44qovR7s880joybQ@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: kvm-devel-bounces-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: kvm.vger.kernel.org Aurelien Jarno a =E9crit : > Aurelien Jarno a =E9crit : >> Avi Kivity a =E9crit : >>> Aurelien Jarno wrote: >>>> Avi Kivity a =E9crit : >>>> = >>>>> Aurelien Jarno wrote: >>>>> = >>>>>> Hi all, >>>>>> >>>>>> That's not something new, but I never seen the problem mentioned her= e. >>>>>> FreeBSD does not work on KVM, approximately since the lapic merge. >>>>>> >>>>>> However, that does not seem related to lapic, as using -no-kvm-irqch= ip >>>>>> does not help. With -no-kvm I get a page fault in kernel mode, while= the >>>>>> normal QEMU (0.9.0 or CVS) does not have this problem. >>>>>> >>>>>> This can be easily reproduced with the latest installation CD: >>>>>> ftp://ftp.freebsd.org/pub/FreeBSD/ISO-IMAGES-i386/6.2/6.2-RELEASE-i3= 86-bootonly.iso >>>>>> >>>>>> = >>>>>> = >>>>> It complains about the RSDT checksum. Running with -no-acpi works = >>>>> around the problem (it gets to some country selection screen). So it = >>>>> looks like the ACPI tables are messed up. >>>>> = >>>> The RSDT checksum problem is not new, but it was harmless on previous >>>> versions (like kvm-37). >>>> >>>> Using -no-acpi, I am able to boot the machine with -no-kvm, but the >>>> guest still hang with -no-acpi and with -no-kvm-irqchip or lapic >>>> enabled. At least on AMD64, I haven't tested yet on an Intel machine. >>>> >>>> = >>> Looks like there is a compiler problem that's interfering here. A bios = >>> compiled on one machine will boot fine on Intel, but on other machines = >>> (unfortunately my work machines) will not. >>> >>> There is a separate issue with -no-acpi on AMD. Is there some version = >>> where -no-acpi worked on AMD? >> It was working correctly before, up to kvm version 37. >> >> I also confirm that using -no-acpi fixes the problem. However, I have >> seen strange data corruption, even on Intel. >> >> Basically, booting a recently installed FreeBSD leads to the following >> message from the bootloader: "No kernel found". And the next time, I get >> from the *BIOS*: "Boot from Hard Disk failed: not a bootable disk". >> >> Looking at the disk image, the partition table (and maybe more?) has >> disappeared. This is with a raw image disk. >> >> If I pass either -no-kvm or -no-kvm-irqchip, the problem disappear. > = > I have just got the problem with -no-kvm-irqchip, though it seems to > happen less often. The data corruption seems to come from the userspace part, as I am not able to reproduce it with the kvm-45 module, and the kvm-44 userspace. -- = .''`. Aurelien Jarno | GPG: 1024D/F1BCDB73 : :' : Debian developer | Electrical Engineer `. `' aurel32-8fiUuRrzOP0dnm+yROfE0A@public.gmane.org | aurelien-rXXEIb44qovR7s880joybQ@public.gmane.org `- people.debian.org/~aurel32 | www.aurel32.net ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/