On Tue, May 16, 2023 at 11:59:07AM +0000, Yajun Deng wrote: > If we have '/sys/devices/system/node/node0/mc0', by comparing the number > of dimm and MemTotal in meminfo. It is easy to know that the dimm didn't > recognized whether it belonged to this NUMA node or not. mc != NUMA node. In any case, EDAC's purpose is not for finding lost memory. Fix your system's configuration so that no DIMMs remain unrecognized at boot. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette