[PATCH v2 07/13] powerpc: Increase NR_IRQS range to support more KVM guests

[Michael Ellerman]

Cédric Le Goater <clg at kaod.org> writes:
> PowerNV systems can handle up to 4K guests and 1M interrupt numbers
> per chip. Increase the range of allowed interrupts to support a larger
> number of guests.
>
> Reviewed-by: Greg Kurz <groug at kaod.org>
> Signed-off-by: Cédric Le Goater <clg at kaod.org>
> ---
>  arch/powerpc/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 5181872f9452..c250fbd430d1 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -66,7 +66,7 @@ config NEED_PER_CPU_PAGE_FIRST_CHUNK
>  
>  config NR_IRQS
>  	int "Number of virtual interrupt numbers"
> -	range 32 32768
> +	range 32 1048576
>  	default "512"
>  	help
>  	  This defines the number of virtual interrupt numbers the kernel

We should really do what other arches do, and size this appropriately
based on the config, rather than asking users to guess what size they
need.

But I guess I'll take this for now, and we can do something fancier
later.

cheers