[PATCH] drivers/base, mm: move arch_numa.c to mm/

[Andrew Morton]

On Thu, 06 Aug 2026 09:58:38 +0300 "Mike Rapoport (Microsoft)" <rppt at kernel.org> wrote:

> arch_numa.c implements boot time discovery and initialization of NUMA
> topology on architectures that select GENERIC_ARCH_NUMA (currently arm64
> and riscv).
> 
> Since this is step in the initialization of the memory management
> subsystem, it's logical to have arch_numa.c in mm/ alongside numa.c,
> numa_memblks.c and numa_emulation.c.
> 
> Move arch_numa.c to mm/ and add its F: entry to "MEMBLOCK AND MEMORY
> MANAGEMENT INITIALIZATION" in MAINTAINERS.

Unclear what tree this is targeted at.  I grabbed it.


mm-stable does have this change:

--- linux-7.2-rc5/drivers/base/arch_numa.c	2026-07-27 04:44:55.000000000 -0700
+++ 25/drivers/base/arch_numa.c	2026-08-06 15:47:59.019918702 -0700
@@ -231,10 +231,6 @@ static int __init numa_init(int (*init_f
 {
 	int ret;
 
-	nodes_clear(numa_nodes_parsed);
-	nodes_clear(node_possible_map);
-	nodes_clear(node_online_map);
-
 	ret = numa_memblks_init(init_func, /* memblock_force_top_down */ false);
 	if (ret < 0)
 		goto out_free_distance;


which is easily handled either way.