Re: [PATCH 0/3] Fifth MPU Series

[Harry Ramsey <harry.ramsey@xxxxxxx>]

On 06/02/2026 09:01, Harry Ramsey wrote:

> This series continues to further the ongoing work to introduce support
> for MPU systems in Xen.
>
> The patches in this series aim to implement MPU specific p2m functions.
>
> Harry Ramsey (2):
>    arm/mpu: Introduce `v8r_el1_msa` device tree property for domains
>    arm/mpu: Implement p2m tables
>
> Penny Zheng (1):
>    arm/mpu: implement setup_virt_paging for MPU system
>
>   docs/misc/arm/device-tree/booting.txt    | 11 ++++
>   xen/arch/arm/arm64/mpu/p2m.c             | 67 +++++++++++++++++++++-
>   xen/arch/arm/dom0less-build.c            | 25 +++++++++
>   xen/arch/arm/domain.c                    | 16 ++++++
>   xen/arch/arm/include/asm/arm32/mpu.h     |  2 +
>   xen/arch/arm/include/asm/arm64/mpu.h     |  2 +
>   xen/arch/arm/include/asm/arm64/sysregs.h |  4 ++
>   xen/arch/arm/include/asm/cpufeature.h    | 13 ++++-
>   xen/arch/arm/include/asm/domain.h        |  9 +++
>   xen/arch/arm/include/asm/mpu.h           |  5 ++
>   xen/arch/arm/include/asm/mpu/p2m.h       | 12 ++++
>   xen/arch/arm/include/asm/p2m.h           |  5 ++
>   xen/arch/arm/include/asm/processor.h     | 11 ++++
>   xen/arch/arm/mpu/p2m.c                   | 71 +++++++++++++++++++++++-
>   xen/include/public/arch-arm.h            |  4 ++
>   15 files changed, 250 insertions(+), 7 deletions(-)
>
> --
> 2.43.0
This is a complete rework of the previous patch: 
https://patchwork.kernel.org/project/xen-devel/patch/20260119105022.3616126-1-harry.ramsey@xxxxxxx/
v2:

- Split `implement setup_virt_paging for MPU system` into `arm/mpu: 
implement setup_virt_paging for MPU system` and `Implement p2m tables`
- Rework register setup within `setup_virt_paging` to be more concise

- Introduce v8r_el1_msa device tree parameter