Release 4.11 arch/mips/mm/pgtable-32.c

/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 *
 * Copyright (C) 2003 by Ralf Baechle
 */
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
#include <linux/highmem.h>
#include <asm/fixmap.h>
#include <asm/pgtable.h>
#include <asm/pgalloc.h>



void pgd_init(unsigned long page)
{
	unsigned long *p = (unsigned long *) page;
	int i;

	for (i = 0; i < USER_PTRS_PER_PGD; i+=8) {
		p[i + 0] = (unsigned long) invalid_pte_table;
		p[i + 1] = (unsigned long) invalid_pte_table;
		p[i + 2] = (unsigned long) invalid_pte_table;
		p[i + 3] = (unsigned long) invalid_pte_table;
		p[i + 4] = (unsigned long) invalid_pte_table;
		p[i + 5] = (unsigned long) invalid_pte_table;
		p[i + 6] = (unsigned long) invalid_pte_table;
		p[i + 7] = (unsigned long) invalid_pte_table;
	}
}

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void __init pagetable_init(void)
{
	unsigned long vaddr;
	pgd_t *pgd_base;
#ifdef CONFIG_HIGHMEM
	pgd_t *pgd;
	pud_t *pud;
	pmd_t *pmd;
	pte_t *pte;
#endif

	/* Initialize the entire pgd.  */
	pgd_init((unsigned long)swapper_pg_dir);
	pgd_init((unsigned long)swapper_pg_dir
		 + sizeof(pgd_t) * USER_PTRS_PER_PGD);

	pgd_base = swapper_pg_dir;

	/*
         * Fixed mappings:
         */
	vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
	fixrange_init(vaddr, vaddr + FIXADDR_SIZE, pgd_base);

#ifdef CONFIG_HIGHMEM
	/*
         * Permanent kmaps:
         */
	vaddr = PKMAP_BASE;
	fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, pgd_base);

	pgd = swapper_pg_dir + __pgd_offset(vaddr);
	pud = pud_offset(pgd, vaddr);
	pmd = pmd_offset(pud, vaddr);
	pte = pte_offset_kernel(pmd, vaddr);
	pkmap_page_table = pte;
#endif
}
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Ralf Bächle
150
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3
1.96%
1
25.00%
Total
153
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4
100.00%

Overall Contributors
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Ralf Bächle
307
96.24%
4
57.14%
Andrew Morton
6
1.88%
1
14.29%
Kevin Cernekee
3
0.94%
1
14.29%
Atsushi Nemoto
3
0.94%
1
14.29%
Total
319
100.00%
7
100.00%
Directory: arch/mips/mm

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