Re: [PATCH] riscv: Add RISC-V svpbmt extension

[Nick Kossifidis]

Στις 2021-09-23 13:04, Philipp Tomsich έγραψε:
> How if we expand this to a mmu subnode in cpu@x and add a booleans for 
> adornments like svnapot and svpbmt?
> The older mmu-type could then treated to indicate a mmu w/o any 
> adornments specified.  I am aware that this generates an additional 
> parsing-path that will be maintained, but it will allow future 
> properties to be grouped.
>
> cpu@0 {
> ...
> mmu {
> type = "riscv,sv39";
> supports-svpbmt;
> }
> ...
> }

I was about to propose the same thing, we can do this now without 
breaking backwards compatibility, we don't really use mmu-type property 
at this point, we are either sv39 or nommu.