cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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highmem_32.c (839B)

      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
      7void __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}