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82 lines
1.3 KiB
82 lines
1.3 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* arch/sh/mm/hugetlbpage.c |
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* |
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* SuperH HugeTLB page support. |
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* |
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* Cloned from sparc64 by Paul Mundt. |
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* |
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* Copyright (C) 2002, 2003 David S. Miller ([email protected]) |
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*/ |
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#include <linux/init.h> |
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#include <linux/fs.h> |
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#include <linux/mm.h> |
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#include <linux/hugetlb.h> |
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#include <linux/pagemap.h> |
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#include <linux/sysctl.h> |
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#include <asm/mman.h> |
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#include <asm/tlb.h> |
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#include <asm/tlbflush.h> |
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#include <asm/cacheflush.h> |
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pte_t *huge_pte_alloc(struct mm_struct *mm, |
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unsigned long addr, unsigned long sz) |
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{ |
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pgd_t *pgd; |
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p4d_t *p4d; |
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pud_t *pud; |
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pmd_t *pmd; |
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pte_t *pte = NULL; |
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pgd = pgd_offset(mm, addr); |
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if (pgd) { |
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p4d = p4d_alloc(mm, pgd, addr); |
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if (p4d) { |
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pud = pud_alloc(mm, p4d, addr); |
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if (pud) { |
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pmd = pmd_alloc(mm, pud, addr); |
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if (pmd) |
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pte = pte_alloc_map(mm, pmd, addr); |
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} |
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} |
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} |
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return pte; |
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} |
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pte_t *huge_pte_offset(struct mm_struct *mm, |
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unsigned long addr, unsigned long sz) |
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{ |
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pgd_t *pgd; |
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p4d_t *p4d; |
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pud_t *pud; |
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pmd_t *pmd; |
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pte_t *pte = NULL; |
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pgd = pgd_offset(mm, addr); |
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if (pgd) { |
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p4d = p4d_offset(pgd, addr); |
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if (p4d) { |
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pud = pud_offset(p4d, addr); |
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if (pud) { |
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pmd = pmd_offset(pud, addr); |
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if (pmd) |
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pte = pte_offset_map(pmd, addr); |
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} |
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} |
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} |
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return pte; |
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} |
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int pmd_huge(pmd_t pmd) |
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{ |
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return 0; |
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} |
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int pud_huge(pud_t pud) |
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{ |
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return 0; |
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}
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