How does qemu detect the CPU type?  I'm running a 64-bit ArchLinux (without KVM) on an Intel Xeon E5420 processor.  I'm able to boot qemu's small test image (http://wiki.qemu.org/download/linux-0.2.img.bz2) and the libguestfs iso image test passes, but the make-{debian,fedora,ubuntu,windows}-img.sh scripts all fail with the CPU mismatch bios error.

I added "-v" to guestfish in images/guest-aux/make-debian-img.sh, ran "make check" and got the output listed below.  I got the same results running as root and as non-root.

$ mcp:/enolte/libguestfs/src/libguestfs-1.12.7> make check

Making check in gnulib/lib

make[1]: Entering directory `/home/enolte/libguestfs/src/libguestfs-1.12.7/gnulib/lib'

  GEN    configmake.h

make  check-recursive

make[2]: Entering directory `/home/enolte/libguestfs/src/libguestfs-1.12.7/gnulib/lib'

make[3]: Entering directory `/home/enolte/libguestfs/src/libguestfs-1.12.7/gnulib/lib'

  GEN    configmake.h

make[3]: Leaving directory `/home/enolte/libguestfs/src/libguestfs-1.12.7/gnulib/lib'

make[2]: Leaving directory `/home/enolte/libguestfs/src/libguestfs-1.12.7/gnulib/lib'

make[1]: Leaving directory `/home/enolte/libguestfs/src/libguestfs-1.12.7/gnulib/lib'

Making check in images

make[1]: Entering directory `/home/enolte/libguestfs/src/libguestfs-1.12.7/images'

ln -sf /10klines abssymlink

rm -f test.iso test.iso-t

mkdir -p directory

/usr/bin/genisoimage -J -r -graft-points \

  -o test.iso-t \

  ./helloworld.tar ./helloworld.tar.gz ./helloworld.tar.xz ./empty ./known-1 ./known-2 ./known-3 ./known-4 ./known-5 ./bin-i586-dynamic ./bin-sparc-dynamic ./bin-win32.exe ./bin-win64.exe ./bin-x86_64-dynamic ./lib-i586.so ./lib-sparc.so ./lib-win32.dll ./lib-win64.dll ./lib-x86_64.so ./test-grep.txt ./100kallzeroes ./100kallnewlines ./100kallspaces ./100krandom ./10klines ./abssymlink ./hello.b64 ./initrd ./initrd-x86_64.img ./initrd-x86_64.img.gz ./test-grep.txt.gz /directory=directory

Total translation table size: 0

Total rockridge attributes bytes: 3010

Total directory bytes: 2048

Path table size(bytes): 26

Max brk space used 0

635 extents written (1 MB)

rmdir directory

mv test.iso-t test.iso

make  debian.img fedora.img ubuntu.img windows.img

make[2]: Entering directory `/home/enolte/libguestfs/src/libguestfs-1.12.7/images'

TMPDIR=.. \

SRCDIR=. \

bash guest-aux/make-debian-img.sh

libguestfs: [00000ms] febootstrap-supermin-helper --verbose -f checksum '/home/enolte/libguestfs/src/libguestfs-1.12.7/appliance/supermin.d' x86_64

supermin helper [00000ms] whitelist = (not specified), host_cpu = x86_64, kernel = (null), initrd = (null), appliance = (null)

supermin helper [00000ms] inputs[0] = /home/enolte/libguestfs/src/libguestfs-1.12.7/appliance/supermin.d

supermin helper [00000ms] finished creating kernel

supermin helper [00000ms] visiting /home/enolte/libguestfs/src/libguestfs-1.12.7/appliance/supermin.d

supermin helper [00000ms] visiting /home/enolte/libguestfs/src/libguestfs-1.12.7/appliance/supermin.d/base.img

supermin helper [00000ms] visiting /home/enolte/libguestfs/src/libguestfs-1.12.7/appliance/supermin.d/daemon.img

supermin helper [00000ms] visiting /home/enolte/libguestfs/src/libguestfs-1.12.7/appliance/supermin.d/hostfiles

supermin helper [00020ms] visiting /home/enolte/libguestfs/src/libguestfs-1.12.7/appliance/supermin.d/init.img

supermin helper [00052ms] finished creating appliance

libguestfs: [00055ms] begin testing qemu features

libguestfs: [00068ms] finished testing qemu features

libguestfs: accept_from_daemon: 0x1625140 g->state = 1

[00069ms] /usr/bin/qemu \

    -drive file=debian.img.tmp,cache=off,format=raw,if=virtio \

    -nodefconfig \

    -machine pc,accel=kvm:tcg \

    -nodefaults \

    -nographic \

    -m 500 \

    -no-reboot \

    -no-hpet \

    -device virtio-serial \

    -serial stdio \

    -chardev socket,path=/home/enolte/libguestfs/src/libguestfs-1.12.7/libguestfsCMM14k/guestfsd.sock,id=channel0 \

    -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \

    -kernel /home/enolte/libguestfs/src/libguestfs-1.12.7/.guestfs-1004/kernel.26205 \

    -initrd /home/enolte/libguestfs/src/libguestfs-1.12.7/.guestfs-1004/initrd.26205 \

    -append 'panic=1 console=ttyS0 udevtimeout=300 noapic acpi=off printk.time=1 cgroup_disable=memory selinux=0 guestfs_verbose=1 TERM=xterm-256color ' \

    -drive file=/home/enolte/libguestfs/src/libguestfs-1.12.7/.guestfs-1004/root.26205,snapshot=on,if=virtio,cache=unsafeCould not access KVM kernel module: No such file or directory

failed to initialize KVM: No such file or directory

Back to tcg accelerator.

\x1b[1;256r\x1b[256;256H\x1b[6n

Google, Inc.

Serial Graphics Adapter 09/23/11

SGABIOS $Id: sgabios.S 8 2010-04-22 00:03:40Z nlaredo $ (root@saltdev) Fri Sep 23 18:55:38 UTC 2011

Term: 80x24

4 0

SeaBIOS (version pre-0.6.3-20110315_112143-titi)

Booting from ROM...

This kernel requires an x86-64 CPU, but only detected an i686 CPU.

Unable to boot - please use a kernel appropriate for your CPU.

^Cmake[2]: *** [debian.img] Interrupt

make[1]: *** [check-am] Interrupt

make: *** [check-recursive] Interrupt