Henrik Holst wrote:
There is a boot regression in kvm-72:

scsi and virtio images will not survive a "reboot" from within the
guest. Only drives with if=ide survives a rebooting of the guest.

That is, this will create a guest that will survive any number of reboots:
    qemu-system-x86_64 -M -drive file=a,if=ide,media=disk,boot=on -boot c

While this will only survive the first boot:
    qemu-system-x86_64 -M -drive file=a,if=scsi,media=disk,boot=on -boot c OR
    qemu-system-x86_64 -M -drive file=a,if=virtio,media=disk,boot=on -boot c

What does "survive" mean?

Also the extboot work done by H. Peter Anvin finally makes the newer
isolinux menus to work but the older isolinux (for example the
installer to ubuntu 7.10)

Ubuntu doesn't use isolinux, it uses gfxboot. Older versions of gfxboot are known to be broken with KVM on Intel.

Regards,

Anthony Liguori

 still does not work. It no longer segfaults
though but instead the guest completely hangs. Much improvement
though!

/Henrik Holst
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