Hello,
On Fri, Jul 01, 2011 at 03:34:42PM -0600, Petrus de Calguarium wrote:
> My physical system is a Fedora 15 x86_64 system with an Intel Core2
> Duo E6320 processor that supports virtualization.
>
> I have Windows Xp installed onto a qcow2 virtual machine. I call it
> like so:
>
> qemu-kvm -enable-kvm -cpu core2duo -m 1024 -boot c -vga std -soundhw
> pcspk,es1370 -localtime -hda win-c.img -hdb win-e.img -cdrom /dev/sr0
>
> 1. Do I need the -enable-kvm argument in the line above?
I think you don't need it, if you start qemu with qemu-kvm command.
May be it's useful for qemu command.
> 2. qemu-kvm -cpu ? mentions the arguments -cpu core2duo, kvm64, qemu64
> and others, but, from the list provided, it is unclear which I am to
> use. I have been using core2duo. Does this refer to my physical or
> virtual computer? Which should I choose? I want my virtual machine to
You can't change host (physical) computer processor by software.
-cpu option tells qemu, which CPU you need to emulate. For some software,
you need a special CPU.
Also there are software, which need license after processor change
or are allowed to run only on specific CPU, then this parameter is useful.
> be as close as possible to a clone of my real machine, for the
> purposes of running the virtual machine.
You don't need to specify -cpu parameter. It will be chosen automatically.
> 3. I read about getting better performance using the virtio driver.
> Can it be used with qemu-kvm or only with libvirt? If I can use it,
You can use it with qemu-kvm directly and also with libvirt.
> how would I do so? I don't see any mention of it in the qemu
> documentation, nor does there appear to be anywhere in the virtual
> system's device manager where I can select a different driver for the
> hard drive.
For paravirtualized disk drivers, see at -drive definition's "if" parameter.
If you define your disk as:
-drive file=...,if=virtio
Your disk drive will be known for your host as paravirtualized virtio drive.
Similar parameter for network driver:
-net ...,model=virtio
You need to install virtio drivers in windows. They are not a part of system
installation. Search this mailinglist archives for URLs, where you can find
them.
SAL
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