Re: [Qemu-devel] About qemu emulation speed (a question) and supported OS

[Jim C. Brown]

On Tue, Sep 13, 2005 at 11:27:39PM -0500, Anthony Liguori wrote:
> I reckon kqemu has this same problem... Technically, even in ring 3, if 
> you run natively, you violate the Popek/Goldberg requirements because of 
> cpuid.  It's just not possible to trap it but it shouldn't matter for 
> most software.
> 

It is possible to trap it, in a sense. You just read ahead and replace the
cpuid instruction with something else.

Ugly, but doable.

-- 
Infinite complexity begets infinite beauty.
Infinite precision begets infinite perfection.