Re: [PATCH v6 22/23] xen/riscv: add initial dom0less infrastructure support

On 20.07.2026 18:00, Oleksii Kurochko wrote:
> Enable dom0less support for RISC-V by selecting HAS_DOM0LESS and
> providing the minimal architecture hooks required by the common
> dom0less infrastructure.
> 
> Add stub implementations for architecture-specific helpers used when
> building domains from the device tree. These allow the generic
> dom0less code to build and let a basic DomU be constructed on RISC-V.
> construct_hwdom() and make_hypervisor_node() are still stubs returning
> an error: Dom0/hwdom construction isn't supported yet, and the
> hypervisor node generation (needed by domains with
> DOM0LESS_ENHANCED_NO_XS set) is not implemented. Both are marked with
> a TODO and are not reached by the currently supported configurations.
> 
> Provide missing helpers and definitions required by the domain
> construction code, including domain bitness helpers and the
> p2m_set_allocation() prototype.
> 
> Additionally define the guest magic memory region (GUEST_MAGIC_BASE /
> GUEST_MAGIC_SIZE) in asm/guest-layout.h. The base is arbitrary; the
> only constraint is that the region must not overlap guest RAM or the
> emulated device regions. It is placed in the unused gap below
> GUEST_RAM0_BASE (0x80000000); the constraints are documented next to
> the #define-s.
> 
> A separate region for grant tables will be introduced at the same time as
> the introduction of the grant table for RISC-V.
> 
> Signed-off-by: Oleksii Kurochko <[email protected]>
> ---
> Changes in v6:
>  - Acked-by: Jan Beulich <[email protected]>.

Except that once you again you didn't really add the tag.

Jan