[Xen-users] Convert Debian 6 from HVM to PV

[James Pifer <jep@xxxxxxxxxxxxxxxx>]

I have a couple Debian 6 HVM VMs. From what I've read, Debian 6's 
standard kernels have pv_ops already enabled. I'd like to convert these 
to pv for the following reasons (Assuming both of are valid expectations):
1) so the VMs use pv for the NICs
2) so the VMs properly respond to shutdown/reboot commands from xm

I'm having trouble converting them. I believe need to convert the menu 
from something like this:
        root (hd0,0)
        kernel /xen.gz-2.6.18-53.1.14.el5
        module /vmlinuz-2.6.18-53.1.14.el5xen ro root=LABEL=/
        module /myinitrd.img

to something like this:
        root (hd0,0)
        kernel /vmlinuz-2.6.18-53.1.14.el5xen ro root=LABEL=/
        initrd /myinitrd.img

The Debian 6 VMs I have appear to use grub2, which is a pain in the rear 
as far as I can tell. I expect there are good reasons for it, but being 
able to modify a menu.lst makes this transition much easier. The top of 
the file says to use /etc/grub.d and settings from /etc/default/grub to 
update grub.cfg, but I can't figure out how they build the menu section.
Here's the menu section of grub.cfg. Can anyone give me some help on 
changing this to the proper form for booting pv?
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-686' --class debian 
--class gnu-linux --class gnu --class os {
        insmod part_msdos
        insmod ext2
        set root='(hd0,msdos1)'
        search --no-floppy --fs-uuid --set 
8d0d1b45-e312-49ee-9213-50651e18f259
        echo    'Loading Linux 2.6.32-5-686 ...'
        linux   /boot/vmlinuz-2.6.32-5-686 
root=UUID=8d0d1b45-e312-49ee-9213-50651e18f259 ro  quiet
        echo    'Loading initial ramdisk ...'
        initrd  /boot/initrd.img-2.6.32-5-686
}

Any help is appreciated.

Thanks,
James

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