On Wed, 27 Mar 2024, Andrew Morton wrote:
In order to fix the bug, the patch introduces early_numa_node_init() which is called after smp_prepare_boot_cpu() in start_kernel. early_numa_node_init will initialize the "numa_node" as soon as the early_cpu_to_node() is ready, before the cpu_to_node() is called at the first time.What are the userspace-visible runtime effects of this bug?
Performance is reduced since there is increase in off node accesses.
