1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * arch/arm/include/asm/hugetlb-3level.h 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2012 ARM Ltd. 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Based on arch/x86/include/asm/hugetlb.h. 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #ifndef _ASM_ARM_HUGETLB_3LEVEL_H 11*4882a593Smuzhiyun #define _ASM_ARM_HUGETLB_3LEVEL_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun /* 15*4882a593Smuzhiyun * If our huge pte is non-zero then mark the valid bit. 16*4882a593Smuzhiyun * This allows pte_present(huge_ptep_get(ptep)) to return true for non-zero 17*4882a593Smuzhiyun * ptes. 18*4882a593Smuzhiyun * (The valid bit is automatically cleared by set_pte_at for PROT_NONE ptes). 19*4882a593Smuzhiyun */ 20*4882a593Smuzhiyun #define __HAVE_ARCH_HUGE_PTEP_GET huge_ptep_get(pte_t * ptep)21*4882a593Smuzhiyunstatic inline pte_t huge_ptep_get(pte_t *ptep) 22*4882a593Smuzhiyun { 23*4882a593Smuzhiyun pte_t retval = *ptep; 24*4882a593Smuzhiyun if (pte_val(retval)) 25*4882a593Smuzhiyun pte_val(retval) |= L_PTE_VALID; 26*4882a593Smuzhiyun return retval; 27*4882a593Smuzhiyun } 28*4882a593Smuzhiyun 29*4882a593Smuzhiyun #endif /* _ASM_ARM_HUGETLB_3LEVEL_H */ 30