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> 6 7 void __init set_highmem_pages_init(void) 8 { 9 struct zone *zone; 10 int nid; 11 12 /* 13 * Explicitly reset zone->managed_pages because set_highmem_pages_init() 14 * is invoked before memblock_free_all() 15 */ 16 reset_all_zones_managed_pages(); 17 for_each_zone(zone) { 18 unsigned long zone_start_pfn, zone_end_pfn; 19 20 if (!is_highmem(zone)) 21 continue; 22 23 zone_start_pfn = zone->zone_start_pfn; 24 zone_end_pfn = zone_start_pfn + zone->spanned_pages; 25 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); 29 30 add_highpages_with_active_regions(nid, zone_start_pfn, 31 zone_end_pfn); 32 } 33 } 34