It's unclear why normally CPUMASK_OFFSTACK can only be manually configured "if DEBUG_PER_CPU_MAPS" which is not an option meant to be enabled on enterprise arm64 kernels. The default enterprise kernels NR_CPUS is 4096 which is fairly large. So it'll save some RAM and it'll increase reliability to select CPUMASK_OFFSET at least when NUMA is selected and a large NR_CPUS is to be expected. Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx> --- arch/arm64/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 0b30e884e088..882887e65394 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -955,6 +955,7 @@ config NUMA bool "Numa Memory Allocation and Scheduler Support" select ACPI_NUMA if ACPI select OF_NUMA + select CPUMASK_OFFSTACK help Enable NUMA (Non Uniform Memory Access) support.
