On 08.09.14 13:44:48, Robert Richter wrote: > From: Robert Richter <[email protected]> > > Raising the current maximum limit to 64. This is needed for Cavium's > Thunder systems that will have at least 48 cores per die. > > The change keeps the current memory footprint in cpu mask structures. > It does not break existing code. Setting the maximum to 64 cpus still > boots systems with less cpus. > > Mark's Juno happily booted with a NR_CPUS=64 kernel. > > Tested on our Thunder system with 48 cores. We could see interrupts to > all cores.
Catalin, Will, please consider applying this patch. Thanks, -Robert > > Cc: Radha Mohan Chintakuntla <[email protected]> > Cc: Mark Rutland <[email protected]> > Signed-off-by: Robert Richter <[email protected]> > --- > arch/arm64/Kconfig | 6 +++--- > 1 file changed, 3 insertions(+), 3 deletions(-) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index fd4e81a4e1ce..67fca2ea81a7 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -252,11 +252,11 @@ config SCHED_SMT > places. If unsure say N here. > > config NR_CPUS > - int "Maximum number of CPUs (2-32)" > - range 2 32 > + int "Maximum number of CPUs (2-64)" > + range 2 64 > depends on SMP > # These have to remain sorted largest to smallest > - default "8" > + default "64" > > config HOTPLUG_CPU > bool "Support for hot-pluggable CPUs" > -- > 2.0.1 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
