Re: [Syllable-kernel] Syllable security and "trusted computing"

[Daniel G. <da...@fp...>]

On Fri, 2005-04-29 at 17:09 +0100, Mark Williamson wrote:
> Of course non-Intel architectures have a range of different numbers and kinds 
> of protection rings, so it's worth bearing in mind portability whilst 
> architecting a system to use the rings.  Even on x86, a port to something 
> like Xen (or L4) would restrict the rings available for use.
> 

There's a reason why Unix systems only use 2 rings. :)  Minimal subset
makes porting much easier.

Daniel