Re: [PATCH v3 0/6] Enable early bootup of AArch64 MPU systems

[oleksii.kurochko@xxxxxxxxx]

Hello Ayan,

I think that we have to mention in CHANGELOG.md that experimental
support of Xen with MPU for Arm is added. ( if I understand correctly
what is this patch series about ).

Thanks.

~ Oleksii
On Thu, 2024-10-10 at 15:03 +0100, Ayan Kumar Halder wrote:
> We have enabled early booting of R82.
> 
> Changes from v2 :-
> 1. Added a new patch "xen/arm: Skip initializing the BSS section when
> it is empty".
> 2. Split "xen/arm: mpu: Create boot-time MPU protection regions" into
> 2 patches.
> 
> Ayan Kumar Halder (6):
>   xen/arm: Skip initializing the BSS section when it is empty
>   xen/arm: mpu: Introduce choice between MMU and MPU
>   xen/arm: mpu: Define Xen start address for MPU systems
>   xen/arm: mpu: Create boot-time MPU protection regions
>   xen/arm: mpu: Enable MPU
>   xen/arm: mpu: Implement a dummy enable_secondary_cpu_mm
> 
>  SUPPORT.md                                   |   1 +
>  xen/arch/Kconfig                             |   2 +
>  xen/arch/arm/Kconfig                         |  27 ++-
>  xen/arch/arm/Makefile                        |   1 +
>  xen/arch/arm/arm64/head.S                    |   2 +
>  xen/arch/arm/arm64/mpu/Makefile              |   1 +
>  xen/arch/arm/arm64/mpu/head.S                | 165
> +++++++++++++++++++
>  xen/arch/arm/include/asm/arm64/mpu/sysregs.h |  30 ++++
>  xen/arch/arm/include/asm/config.h            |   4 +-
>  xen/arch/arm/include/asm/mm.h                |   2 +
>  xen/arch/arm/include/asm/mpu/arm64/mm.h      |  22 +++
>  xen/arch/arm/include/asm/mpu/layout.h        |  33 ++++
>  xen/arch/arm/include/asm/mpu/mm.h            |  20 +++
>  xen/arch/arm/platforms/Kconfig               |   2 +-
>  xen/arch/arm/setup.c                         |  13 ++
>  xen/arch/arm/xen.lds.S                       |   7 +
>  16 files changed, 329 insertions(+), 3 deletions(-)
>  create mode 100644 xen/arch/arm/arm64/mpu/Makefile
>  create mode 100644 xen/arch/arm/arm64/mpu/head.S
>  create mode 100644 xen/arch/arm/include/asm/arm64/mpu/sysregs.h
>  create mode 100644 xen/arch/arm/include/asm/mpu/arm64/mm.h
>  create mode 100644 xen/arch/arm/include/asm/mpu/layout.h
>  create mode 100644 xen/arch/arm/include/asm/mpu/mm.h
>