Contributors: 11
Author Tokens Token Proportion Commits Commit Proportion
Ralf Baechle 255 46.11% 5 18.52%
Linus Torvalds (pre-git) 128 23.15% 12 44.44%
David Daney 95 17.18% 2 7.41%
Alex Belits 43 7.78% 1 3.70%
Feiyang Chen 18 3.25% 1 3.70%
James Hogan 5 0.90% 1 3.70%
Kevin Cernekee 3 0.54% 1 3.70%
Arnaldo Carvalho de Melo 2 0.36% 1 3.70%
Arnd Bergmann 2 0.36% 1 3.70%
Paul Gortmaker 1 0.18% 1 3.70%
Matthew Wilcox 1 0.18% 1 3.70%
Total 553 27 
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/*
 * 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) 1999, 2000 by Silicon Graphics
 * Copyright (C) 2003 by Ralf Baechle
 */
#include <linux/export.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <asm/fixmap.h>
#include <asm/pgalloc.h>
#include <asm/tlbflush.h>

void pgd_init(void *addr)
{
	unsigned long *p, *end;
	unsigned long entry;

#if !defined(__PAGETABLE_PUD_FOLDED)
	entry = (unsigned long)invalid_pud_table;
#elif !defined(__PAGETABLE_PMD_FOLDED)
	entry = (unsigned long)invalid_pmd_table;
#else
	entry = (unsigned long)invalid_pte_table;
#endif

	p = (unsigned long *) addr;
	end = p + PTRS_PER_PGD;

	do {
		p[0] = entry;
		p[1] = entry;
		p[2] = entry;
		p[3] = entry;
		p[4] = entry;
		p += 8;
		p[-3] = entry;
		p[-2] = entry;
		p[-1] = entry;
	} while (p != end);
}

#ifndef __PAGETABLE_PMD_FOLDED
void pmd_init(void *addr)
{
	unsigned long *p, *end;
	unsigned long pagetable = (unsigned long)invalid_pte_table;

	p = (unsigned long *)addr;
	end = p + PTRS_PER_PMD;

	do {
		p[0] = pagetable;
		p[1] = pagetable;
		p[2] = pagetable;
		p[3] = pagetable;
		p[4] = pagetable;
		p += 8;
		p[-3] = pagetable;
		p[-2] = pagetable;
		p[-1] = pagetable;
	} while (p != end);
}
EXPORT_SYMBOL_GPL(pmd_init);
#endif

#ifndef __PAGETABLE_PUD_FOLDED
void pud_init(void *addr)
{
	unsigned long *p, *end;
	unsigned long pagetable = (unsigned long)invalid_pmd_table;

	p = (unsigned long *)addr;
	end = p + PTRS_PER_PUD;

	do {
		p[0] = pagetable;
		p[1] = pagetable;
		p[2] = pagetable;
		p[3] = pagetable;
		p[4] = pagetable;
		p += 8;
		p[-3] = pagetable;
		p[-2] = pagetable;
		p[-1] = pagetable;
	} while (p != end);
}
#endif

#ifdef CONFIG_TRANSPARENT_HUGEPAGE
pmd_t mk_pmd(struct page *page, pgprot_t prot)
{
	pmd_t pmd;

	pmd_val(pmd) = (page_to_pfn(page) << PFN_PTE_SHIFT) | pgprot_val(prot);

	return pmd;
}

void set_pmd_at(struct mm_struct *mm, unsigned long addr,
		pmd_t *pmdp, pmd_t pmd)
{
	*pmdp = pmd;
}
#endif

void __init pagetable_init(void)
{
	unsigned long vaddr;
	pgd_t *pgd_base;

	/* Initialize the entire pgd.  */
	pgd_init(swapper_pg_dir);
#ifndef __PAGETABLE_PUD_FOLDED
	pud_init(invalid_pud_table);
#endif
#ifndef __PAGETABLE_PMD_FOLDED
	pmd_init(invalid_pmd_table);
#endif
	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);
}