arch/x86/mm/highmem_32.c

   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 }