powerpc: Increase NR_IRQS range to support more KVM guests

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

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@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201210171450.1933725-8-clg@kaod.org

authored by

Cédric Le Goater and committed by

Michael Ellerman 5 years ago 7b3b3de3 a5021abc

+1 -1

1 changed file

expand all

arch

powerpc

Kconfig

+1 -1

arch/powerpc/Kconfig

··· 66 66 67 67 config NR_IRQS 68 68 int "Number of virtual interrupt numbers" 69 - range 32 32768 69 + range 32 1048576 70 70 default "512" 71 71 help 72 72 This defines the number of virtual interrupt numbers the kernel