On Thu, Oct 29, 2020 at 01:37:52PM -0700, Vanshidhar Konda wrote: > The current arm64 default config limits max NUMA nodes available on > system to 4 (NODES_SHIFT = 2). Today's arm64 systems can reach or > exceed 16 NUMA nodes. To accomodate current hardware and to fit > NODES_SHIFT within page flags on arm64, increase NODES_SHIFT to 4. > > Discussion on v1 of the patch: > https://lkml.org/lkml/2020/10/20/767
Better use a stable link to refer to the past discussion: Link: https://lore.kernel.org/r/20201020173409.1266576-1-vanshiko...@os.amperecomputing.com > Signed-off-by: Vanshidhar Konda <vanshiko...@os.amperecomputing.com> > --- > arch/arm64/Kconfig | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > index f858c352f72a..cffcc677011f 100644 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@ -982,7 +982,7 @@ config NUMA > config NODES_SHIFT > int "Maximum NUMA Nodes (as a power of 2)" > range 1 10 > - default "2" > + default "4" > depends on NEED_MULTIPLE_NODES > help > Specify the maximum number of NUMA Nodes available on the target Acked-by: Catalin Marinas <catalin.mari...@arm.com>