QEMU in F8/9

Arthur Pemberton pemboa at gmail.com
Mon Jul 14 20:17:33 UTC 2008


On Mon, Jul 14, 2008 at 3:12 PM, Kevin Kofler <kevin.kofler at chello.at> wrote:
> Mogens Kjaer <mk <at> crc.dk> writes:
>> Before creating a virtualized process, check that the CPU does
>> virtualization AND that it is enabled in the BIOS.
>
> Actually regular QEMU doesn't use hardware virtualization, you have to use KVM
> to use it.
>
> QEMU without kqemu = pure software emulation, no hardware support required, can
> emulate other architectures (e.g. x86_64 on a 32-bit x86 host), very slow
> QEMU with kqemu = software virtualization, does not need hardware
> virtualization support, but does need kernel support (kmod-kqemu) and can only
> emulate its own architecture (e.g. no x86_64 emulation on 32-bit hosts)
> KVM (which uses QEMU) = hardware virtualization using the hardware
> virtualization support in recent CPUs, needs kernel support, but such support
> is included in current upstream and Fedora kernels, can only emulate x86 and
> x86_64 (and I'm not sure whether it's possible to run x86_64 KVM VMs on a
> 32-bit x86 host)
>
>        Kevin Kofler

That's what I thought, but had no evidence. Thanks for clarifying.

-- 
Fedora 7 : sipping some of that moonshine
( www.pembo13.com )




More information about the users mailing list