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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/tile/include/asm/hugetlb.h
10819 views
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/*

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 * Copyright 2010 Tilera Corporation. All Rights Reserved.

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 *

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 *   This program is free software; you can redistribute it and/or

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 *   modify it under the terms of the GNU General Public License

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 *   as published by the Free Software Foundation, version 2.

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 *

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 *   This program is distributed in the hope that it will be useful, but

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 *   WITHOUT ANY WARRANTY; without even the implied warranty of

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 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or

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 *   NON INFRINGEMENT.  See the GNU General Public License for

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 *   more details.

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 */

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#ifndef _ASM_TILE_HUGETLB_H

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#define _ASM_TILE_HUGETLB_H

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#include <asm/page.h>

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static inline int is_hugepage_only_range(struct mm_struct *mm,

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					 unsigned long addr,

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					 unsigned long len) {

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	return 0;

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}

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/*

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 * If the arch doesn't supply something else, assume that hugepage

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 * size aligned regions are ok without further preparation.

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 */

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static inline int prepare_hugepage_range(struct file *file,

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					 unsigned long addr, unsigned long len)

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{

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	struct hstate *h = hstate_file(file);

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	if (len & ~huge_page_mask(h))

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		return -EINVAL;

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	if (addr & ~huge_page_mask(h))

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		return -EINVAL;

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	return 0;

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}

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static inline void hugetlb_prefault_arch_hook(struct mm_struct *mm)

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{

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}

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static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb,

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					  unsigned long addr, unsigned long end,

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					  unsigned long floor,

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					  unsigned long ceiling)

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{

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	free_pgd_range(tlb, addr, end, floor, ceiling);

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}

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static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,

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				   pte_t *ptep, pte_t pte)

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{

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	set_pte(ptep, pte);

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}

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static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm,

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					    unsigned long addr, pte_t *ptep)

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{

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	return ptep_get_and_clear(mm, addr, ptep);

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}

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static inline void huge_ptep_clear_flush(struct vm_area_struct *vma,

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					 unsigned long addr, pte_t *ptep)

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{

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	ptep_clear_flush(vma, addr, ptep);

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}

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static inline int huge_pte_none(pte_t pte)

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{

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	return pte_none(pte);

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}

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static inline pte_t huge_pte_wrprotect(pte_t pte)

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{

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	return pte_wrprotect(pte);

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}

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static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,

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					   unsigned long addr, pte_t *ptep)

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{

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	ptep_set_wrprotect(mm, addr, ptep);

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}

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static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,

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					     unsigned long addr, pte_t *ptep,

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					     pte_t pte, int dirty)

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{

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	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);

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}

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static inline pte_t huge_ptep_get(pte_t *ptep)

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{

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	return *ptep;

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}

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static inline int arch_prepare_hugepage(struct page *page)

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{

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	return 0;

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}

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static inline void arch_release_hugepage(struct page *page)

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{

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}

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#endif /* _ASM_TILE_HUGETLB_H */

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