1 // SPDX-License-Identifier: GPL-2.0-only
2 #include <linux/highmem.h>
3 #include <linux/export.h>
4 #include <linux/swap.h> /* for totalram_pages */
5 #include <linux/memblock.h>
7 void __init set_highmem_pages_init(void)
13 * Explicitly reset zone->managed_pages because set_highmem_pages_init()
14 * is invoked before memblock_free_all()
16 reset_all_zones_managed_pages();
18 unsigned long zone_start_pfn, zone_end_pfn;
20 if (!is_highmem(zone))
23 zone_start_pfn = zone->zone_start_pfn;
24 zone_end_pfn = zone_start_pfn + zone->spanned_pages;
26 nid = zone_to_nid(zone);
27 printk(KERN_INFO "Initializing %s for node %d (%08lx:%08lx)\n",
28 zone->name, nid, zone_start_pfn, zone_end_pfn);
30 add_highpages_with_active_regions(nid, zone_start_pfn,