LXR linux/arch/arm/include/asm/hugetlb-3level.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * arch/arm/include/asm/hugetlb-3level.h
   4 *
   5 * Copyright (C) 2012 ARM Ltd.
   6 *
   7 * Based on arch/x86/include/asm/hugetlb.h.
   8 */
   9
  10#ifndef _ASM_ARM_HUGETLB_3LEVEL_H
  11#define _ASM_ARM_HUGETLB_3LEVEL_H
  12
  13
  14/*
  15 * If our huge pte is non-zero then mark the valid bit.
  16 * This allows pte_present(huge_ptep_get(ptep)) to return true for non-zero
  17 * ptes.
  18 * (The valid bit is automatically cleared by set_pte_at for PROT_NONE ptes).
  19 */
  20#define __HAVE_ARCH_HUGE_PTEP_GET
  21static inline pte_t huge_ptep_get(pte_t *ptep)
  22{
  23        pte_t retval = *ptep;
  24        if (pte_val(retval))
  25                pte_val(retval) |= L_PTE_VALID;
  26        return retval;
  27}
  28
  29#endif /* _ASM_ARM_HUGETLB_3LEVEL_H */
  30