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
  21 static 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 */