[Xen-bugs] [Bug 622] New: FreeBSD bootloader stops with BTX halted in hvm domU

[bugzilla-daemon@xxxxxxxxxxxxxxxxxxx]

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=622

           Summary: FreeBSD bootloader stops with BTX halted in hvm domU
           Product: Xen
           Version: 3.0.1
          Platform: x86
        OS/Version: FreeBSD
            Status: NEW
          Severity: major
          Priority: P2
         Component: Guest-OS
        AssignedTo: xen-bugs@xxxxxxxxxxxxxxxxxxx
        ReportedBy: xen.nospam@xxxxxxxxxx


I am running Xen 3.0.2-2 with Ubuntu 5.10.  VT hardware is a Pentium D 920
running on an Asus P5WDG2-WS (975X chipset).

I have tried several different versions of FreeBSD as hvm guests, all with a
similar result of BTX halted during the intitial bootloader process.  One of
the versions tested was the FreeBSD 4.11 based m0n0wall, which would serve as a
nice lightweight test case.  GRUB can be used to successfully boot the kernel,
although then drives are not detected instead giving an interrupt error.  If
GRUB loads /boot/loader, a similar BTX halted error as described below occurs.

The error happens every time, in three different situations, so hopefully it is
easily reproducible.  As noted before m0n0wall is an easy ~5 meg download and
should make for a nice test case <http://m0n0.ch/wall/>.

Thanks,
Andy


----

Relevant info is as follows:


- FreeBSD 5.3

An already working FreeBSD 5.3 install (tested standalone without xen) was
attempted as an hvm guest.

-- `freebsdhd` xen config

<standard arch/lib dir stuff>

kernel = "/usr/lib/xen/boot/hvmloader"
builder='hvm'
memory = 128
name = "FreeBSD-HD"
acpi=0  # Tried all combinations of acpi off, apic off; apic on, acpi off; ...
apic=0
vif = [ 'type=ioemu, bridge=xenbr0' ]
disk = [ 'phy:/dev/hda,ioemu:hda,w' ]
device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm'
sdl=0
vnc=1
vncviewer=0

-- Boot Output (copied by hand--as seen through vnc--so hopefully no typos)

Plex86/Bochs VGABios current-cvs 13 Apr 2006
This VGA/VBE Bios is released under the GNU LGPL

Please visit :
 . ...

cirrus-compatible VGA is detected

HVMAssist BIOS, 1 cpu, $Revision: 1.138 $ $Date: 2005/05/07 15:55:26 $

ata0 master: QEMU HARDDISK ATA-2 Hard-Disk (-13826 MBytes)
ata0  slave: Unknown Device

Booting from Hard Disk...

F1    FreeBSD

Default: F1


int=0000000d  err=00000000  efl=00010046  eip=000090db
eax=00050033  ebx=00002820  ecx=00000000  edx=0000a000
esi=00009701  edi=000d1f98  ebp=000d7bea  esp=00001800
cs=0008  ds=0000  es=0000    fs=0000  gs=0000  ss=0010
cs:eip=0f 01 15 d0 96 00 00 66-ea e8 90 18 00 b1 20 8e
       d1 8e d9 8e c1 8e e1 8e-e9 48 0f 22 c0 ea fd 90
ss:esp=0a 69 6e 74 3d 30 30 30-30 30 30 30 64 20 20 65
       72 72 3d 30 30 30 30 30-30 30 30 20 20 65 66 6c
BTX halted

<This message, from int= to BTX halted, then repeats indefinitely>

-- Relevant qemu-dm file will be attached



########################


- FreeBSD 4.11 (m0n0wall) -- LVM Backed FS

Standard PC harddrive install of m0n0wall was performed as per
http://m0n0.ch/wall/installation_generic.php on a LVM logical volume.

-- `m0n0wall` xen config

<standard arch/lib dir stuff>

kernel = "/usr/lib/xen/boot/hvmloader"
builder='hvm'
memory = 64
name = "m0n0wall"
acpi=0  # Tried all combinations of acpi off, apic off; apic on, acpi off; ...
apic=0
vif = [ 'type=ioemu, bridge=xenbr0' ]
disk = [ 'phy:/dev/xendisks/m0n0wall,ioemu:hda,w' ]
device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm.debug'
sdl=0
vnc=1
vncviewer=0

-- Boot Output (copied by hand--as seen through vnc--so hopefully no typos)

Plex86/Bochs VGABios current-cvs 13 Apr 2006
This VGA/VBE Bios is released under the GNU LGPL

Please visit :
 . ...

cirrus-compatible VGA is detected

HVMAssist BIOS, 1 cpu, $Revision: 1.138 $ $Date: 2005/05/07 15:55:26 $

ata0 master: QEMU HARDDISK ATA-2 Hard-Disk (512 MBytes)
ata0  slave: Unknown Device

Booting from Hard Disk...

int=0000000d  err=00000000  efl=00010006  eip=000090ac
eax=00094c00  ebx=00002820  ecx=00000033  edx=0000a000
esi=000096c1  edi=000d1f98  ebp=000d7bea  esp=000017f0
cs=0008  ds=0000  es=0000    fs=0000  gs=0000  ss=0010
cs:eip=ff 35 0c 90 00 00 51 51-51 51 52 b1 07 6a 00 e2
ss:esp=2b 00 00 00 02 02 00 00-00 4c 09 00 33 00 00 00
BTX halted

<Stops and does not repeat>

-- Relevant qemu-dm file will be attached




########################


- FreeBSD 4.11 (m0n0wall) -- CD-ROM iso Image

-- `m0n0walliso` xen config

<standard arch/lib dir stuff>

kernel = "/usr/lib/xen/boot/hvmloader"
builder='hvm'
memory = 64
name = "m0n0wall"
acpi=0  # Tried all combinations of acpi off, apic off; apic on, acpi off; ...
apic=0
vif = [ 'type=ioemu, bridge=xenbr0' ]
cdrom='/home/q3aiml/cdrom-1.22.iso'
boot='d'
device_model = '/usr/' + arch_libdir + '/xen/bin/qemu-dm.debug'
sdl=0
vnc=1
vncviewer=0

-- Boot Output (copied by hand--as seen through vnc--so hopefully no typos)

Plex86/Bochs VGABios current-cvs 13 Apr 2006
This VGA/VBE Bios is released under the GNU LGPL

Please visit :
 . ...

cirrus-compatible VGA is detected

HVMAssist BIOS, 1 cpu, $Revision: 1.138 $ $Date: 2005/05/07 15:55:26 $

ata0 master: QEMU CD-ROM ATAPI-4 CD-Rom/DVD-Rom
ata0  slave: Unknown Device

Booting from CD-Rom...
CD Loader 1.2

Building the boot loader arguments
Looking up /BOOT/LOADER... Found
Relocating the loader and the BTX
Starting the BTX loader

int=0000000d  err=00000000  efl=00010006  eip=000090ac
eax=00094c00  ebx=00032820  ecx=00000033  edx=0000a000
esi=002096c1  edi=000d1f98  ebp=000d0000  esp=000017f0
cs=0008  ds=0000  es=0000    fs=0000  gs=0000  ss=0010
cs:eip=ff 35 0c 90 00 00 51 51-51 51 52 b1 07 6a 00 e2
ss:esp=2b 00 00 00 02 02 00 00-00 4c 09 00 33 00 00 00
BTX halted

<Stops and does not repeat>

-- Relevant qemu-dm file will be attached


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