Re: [PATCH v2] arm64: NUMA: Kconfig: Increase NODES_SHIFT to 4

2020-10-30 Thread Catalin Marinas
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

[PATCH v2] arm64: NUMA: Kconfig: Increase NODES_SHIFT to 4

2020-10-29 Thread Vanshidhar Konda
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: