[PATCH v2 0/9] Add RISC-V Worlds ISA support to OpenSBI

[Krzysztof Kozlowski]

On 17/08/2026 11:04, Yu-Chien Peter Lin wrote:
> This patch series adds support for RISC-V Worlds ISA extensions,
> enabling hardware-enforced isolation boundaries based on World IDs
> by extending the OpenSBI domain framework.
> 
> Trust Model and Boot-time Roles
> --------------------------------
> 
> The implementation follows the two-phase M-mode trust model:
> 
> - RoT M-mode phase: Prior boot stage (ROM/SPL) that may program mwid and
>   mlwidlist and lock mwid before handing off to OpenSBI.
> 
> - Regular M-mode phase (OpenSBI): Treats pmwid/pmwidlist/pmlwidlist as
>   input policy from hardware/RoT. Locks mwid to prevent later M-mode code
>   from changing its own WID. Programs per-domain mlwid/mwiddeleg based on
>   DT configuration.
> 
> Device Tree Bindings
> ---------------------
> 
> Per-hart properties defined in linux kernel DT bindings v3 [1]:
> - riscv,pmwid: M-mode World ID
> - riscv,pmwidlist: M-mode permitted WID bitmap
> - riscv,pmlwidlist: S/U-mode permitted WID bitmap>
> Per-domain properties (see domain_support.md):
> - wid: S-mode WID for this domain
> - widdeleg: WID delegation bitmap for this domain


I don't understand why I am cc-ed here, why DT is described here but not
in the bindings and why do you reference some RFC (which means: not
READY for review) patchset in a different patchset which is ready for
review.

Best regards,
Krzysztof