[pve-devel] disable-efi-enable-pxe-roms.patch break livemigration from old qemu guest without pxe

[Dietmar Maurer]

> >>my tests was with qemu 2.4 (pxe) -> qemu 2.4 (efi) 
> 
> ok, thanks.
> 
> I'll try to test with different qemu version and machineconfig next week.

Also see:

https://git.proxmox.com/?p=pve-qemu-kvm.git;a=commitdiff;h=b6e85098c8b88f609d2bca5bf19fa8e85b176c15

so we can now query the exact package version with

my $res = PVE::QemuServer::vm_mon_cmd($vmid, 'query-version');
print $res->{'package'};

older version simply return '' string.