When hugepages are enabled, each custom NUMA node must be bound to a single host node. This was checked with a regex that only accepts a single digit, so any host node from 10 upwards was rejected with a misleading "more than 1 hostnode value" error, making hugepages unusable on hosts with more than ten NUMA nodes. Accept any single node number instead. Ranges and lists are still rejected as before. Signed-off-by: Michal Fox <me@dualfroz.com> Reviewed-by: Max R. Carrara <m.carrara@proxmox.com> Tested-by: Max R. Carrara <m.carrara@proxmox.com> Link: https://lore.proxmox.com/20260926084115.7-1-me@dualfroz.com [TL: add a multi-digit host node case to the memory tests] Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>