[Info-vax] Intel proposal to simplify x86-64

[Simon Clubley]

On 2023-06-03, John Dallman <jgd at cix.co.uk> wrote:
> Intel are considering a simplification of x86-64, removing the 16-bit and
> 32-bit modes, and changing the booting process, but retaining the ability
> to run 32-bit applications under a 64-bit OS. 
>
><https://www.intel.com/content/www/us/en/developer/articles/technical/envi
> sioning-future-simplified-architecture.html>
>
> Ring 0 will no longer be available to 32-bit code, and rings 1 and 2 will
> no longer be available at all. I don't know much about how VMS on x86-64
> emulates the four ring-equivalents that were available on VAX, Alpha and
> Itanium, but it seemed worth raising the issue, while Intel are taking
> comments on the plan. 
>

>From what I can tell, VSI have completely ignored ring 1 and 2, unless
there's something going on which they have not made public yet.

Simon.

-- 
Simon Clubley, clubley at remove_me.eisner.decus.org-Earth.UFP
Walking destinations on a map are further away than they appear.