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Re: [PATCH v4 6/6] xen/arm: mpu: Implement a dummy enable_secondary_cpu_mm


  • To: Ayan Kumar Halder <ayan.kumar.halder@xxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Mon, 28 Oct 2024 13:55:50 +0100
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  • Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
  • Delivery-date: Mon, 28 Oct 2024 12:55:55 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 28.10.2024 13:45, Ayan Kumar Halder wrote:
> --- a/xen/arch/Kconfig
> +++ b/xen/arch/Kconfig
> @@ -6,11 +6,13 @@ config PHYS_ADDR_T_32
>  
>  config NR_CPUS
>       int "Maximum number of CPUs"
> +     range 1 1 if ARM && MPU
>       range 1 16383
>       default "256" if X86
>       default "8" if ARM && RCAR3
>       default "4" if ARM && QEMU
>       default "4" if ARM && MPSOC
> +     default "1" if ARM && MPU
>       default "128" if ARM
>       help
>         Controls the build-time size of various arrays and bitmaps

I'm afraid I can't easily tell whether MPU can be used together with any of
RCAR3, QEMU, or MPSOC. If it can, the new default line would need to move
up, as it's the first one that has a match on its condition which is being
used.

Jan



 


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