[wellylug] Xen and Windows

[Andrew Tarr]

Daniel Pittman <daniel at rimspace.net> wrote: 

> > *) paravirtualisatation is providing a virtual 'almost the real thing'
> >    environment.
> 
> I think you mean "paravirtualization is *NOT* providing", or "normal
> virtualization is providing" here...

No, I meant to write what I wrote, and it seems right in my head, but I guess it wasn't clear enough because I think you think it means something different to what I meant it to mean :-]

By 'almost the real thing' I mean that for example a paravirtual x86 environment (such as what Xen provides on a hardware platform without hardware support for virtualization) doesn't implement the full x86 instruction set (and may provide additional instructions), whereas a fully virtual x86 environment(like I believe VMWare can provide) implements all of the x86 instructions.  One is 'almost the real thing' and the other is 'the real thing' in terms of being an implementation of the x86 instruction set.  Obviously neither is the real thing in terms of actually being a piece of silicon that implements the x86 instruction set.

-Andrew. 

 



 
-- 
Jetzt kostenlos herunterladen: Internet Explorer 8 und Mozilla Firefox 3 -
sicherer, schneller und einfacher! http://portal.gmx.net/de/go/chbrowser