Re: [PATCH v10 05/12] task_isolation: support CONFIG_TASK_ISOLATION_ALL

[Andi Kleen]

Chris Metcalf <cmetcalf@xxxxxxxxxx> writes:
>  
> +config TASK_ISOLATION_ALL
> +	bool "Provide task isolation on all CPUs by default (except CPU 0)"
> +	depends on TASK_ISOLATION
> +	help
> +	 If the user doesn't pass the task_isolation boot option to
> +	 define the range of task isolation CPUs, consider that all
> +	 CPUs in the system are task isolation by default.
> +	 Note the boot CPU will still be kept outside the range to
> +	 handle timekeeping duty, etc.

That seems like a very dangerous Kconfig option.
"CONFIG_BREAK_EVERYTHING"
If someone sets that by default they will have a lot of trouble.

I wouldn't add that, make it a run time option only.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only