powerpc: Increase NR_IRQS range to support more KVM guests

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

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 2b8e47d1aa917b9660f9f4b6aee796442888aa53..a5f59defa8bc5d4e580f53177fa21305aa91b420 100644 (file)
--- 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