[virt-tools-list] Windows XP 32 guest - i686 or x86_64

Daniel P. Berrange berrange at redhat.com
Tue Sep 21 08:38:34 UTC 2010


On Tue, Sep 21, 2010 at 06:06:54PM +1000, Justin Clift wrote:
> On 09/20/2010 05:22 PM, Grant Williamson wrote:
> >Hi,
> >if I install a 32 bit Windows XP Guest using virt-manager, the default
> >arch is set to x86_64.
> >Is there any advantage using x86_64 or should I switch to i686?.
> >Or does it make no difference.
> 
> Hi Grant,
> 
> If you switch the vm to 32-bit mode, it will use the qemu emulator 
> without hardware acceleration.

It shouldn't do that. It should just be using KVM with a 32-bit
CPU model specified. Much older libvirt used to drop back to QEMU
in this case, but we fixed that.

Daniel
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