Bug#563605: linux-image-2.6.32-trunk-amd64: Intel VT flags missing on Q45 chipset

[Pasi Kärkkäinen <pasik@iki.fi>]

On Mon, Jan 04, 2010 at 12:39:00AM +0000, Jonathan Wiltshire wrote:
> Package: linux-2.6
> Version: 2.6.32-3
> Severity: normal
> 
> I don't seem to have the CPU flags for Intel virtualisation from the processor
> to run KVM, Xen and friends. I double-checked the BIOS and virtualisation
> is enabled (it's a Q45 chipset with a Core2Duo E7400 processor, and a recent
> BIOS).
> 
> I'm happy to include other information or try things if you direct me, since my
> kernel experience is limited. I did wonder if I needed to load a module.
> 

Have you enabled VT in the BIOS? Sometimes you need to completely
power off the computer (disconnect the power cable) after enabling VT in
the BIOS, efore the VT setting gets enabled for real.

Also, Xen can run PV guests without VT. Xen needs VT only for HVM guests
(aka Windows).

KVM needs VT for all guests.

-- Pasi