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On powerpc 8xx huge_ptep_get() will need to know whether the given ptep is a PTE entry or a PMD entry. This cannot be known with the PMD entry itself because there is no easy way to know it from the content of the entry. So huge_ptep_get() will need to know either the size of the page or get the pmd. In order to be consistent with huge_ptep_get_and_clear(), give mm and address to huge_ptep_get(). Link: https://lkml.kernel.org/r/cc00c70dd384298796a4e1b25d6c4eb306d3af85.1719928057.git.christophe.leroy@csgroup.eu Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Reviewed-by: Oscar Salvador <osalvador@suse.de> Cc: Jason Gunthorpe <jgg@nvidia.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
30 lines
740 B
C
30 lines
740 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* arch/arm/include/asm/hugetlb-3level.h
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*
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* Copyright (C) 2012 ARM Ltd.
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*
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* Based on arch/x86/include/asm/hugetlb.h.
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*/
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#ifndef _ASM_ARM_HUGETLB_3LEVEL_H
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#define _ASM_ARM_HUGETLB_3LEVEL_H
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/*
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* If our huge pte is non-zero then mark the valid bit.
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* This allows pte_present(huge_ptep_get(mm,addr,ptep)) to return true for non-zero
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* ptes.
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* (The valid bit is automatically cleared by set_pte_at for PROT_NONE ptes).
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*/
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#define __HAVE_ARCH_HUGE_PTEP_GET
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static inline pte_t huge_ptep_get(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
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{
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pte_t retval = *ptep;
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if (pte_val(retval))
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pte_val(retval) |= L_PTE_VALID;
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return retval;
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}
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#endif /* _ASM_ARM_HUGETLB_3LEVEL_H */
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