1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * NUMA support for s390
 4 *
 5 * Implement NUMA core code.
 6 *
 7 * Copyright IBM Corp. 2015
 8 */
 9
10#include <linux/kernel.h>
11#include <linux/mmzone.h>
12#include <linux/cpumask.h>
13#include <linux/memblock.h>
14#include <linux/node.h>
15#include <asm/numa.h>
16
17void __init numa_setup(void)
18{
19	int nid;
20
21	nodes_clear(node_possible_map);
22	node_set(0, node_possible_map);
23	node_set_online(0);
24	for (nid = 0; nid < MAX_NUMNODES; nid++) {
25		NODE_DATA(nid) = memblock_alloc(sizeof(pg_data_t), 8);
26		if (!NODE_DATA(nid))
27			panic("%s: Failed to allocate %zu bytes align=0x%x\n",
28			      __func__, sizeof(pg_data_t), 8);
29	}
30	NODE_DATA(0)->node_spanned_pages = memblock_end_of_DRAM() >> PAGE_SHIFT;
31	NODE_DATA(0)->node_id = 0;
32}