[PATCH 08/13] powerpc: Increase NR_IRQS range to support more KVM guests
Greg Kurz
groug at kaod.org
Wed Dec 9 04:23:57 AEDT 2020
On Tue, 8 Dec 2020 16:11:19 +0100
Cédric Le Goater <clg at kaod.org> wrote:
> 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.
>
> Signed-off-by: Cédric Le Goater <clg at kaod.org>
> ---
Reviewed-by: Greg Kurz <groug 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
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