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6966d7988c
huge_ptep_get must be reimplemented in order to go through all the PTEs
of a NAPOT region: this is needed because the HW can update the A/D bits
of any of the PTE that constitutes the NAPOT region.
Fixes: 82a1a1f3bf ("riscv: mm: support Svnapot in hugetlb page")
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://lore.kernel.org/r/20230428120120.21620-2-alexghiti@rivosinc.com
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_RISCV_HUGETLB_H
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#define _ASM_RISCV_HUGETLB_H
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#include <asm/page.h>
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static inline void arch_clear_hugepage_flags(struct page *page)
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{
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clear_bit(PG_dcache_clean, &page->flags);
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}
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#define arch_clear_hugepage_flags arch_clear_hugepage_flags
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#ifdef CONFIG_RISCV_ISA_SVNAPOT
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#define __HAVE_ARCH_HUGE_PTE_CLEAR
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void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
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pte_t *ptep, unsigned long sz);
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#define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT
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void set_huge_pte_at(struct mm_struct *mm,
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unsigned long addr, pte_t *ptep, pte_t pte);
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#define __HAVE_ARCH_HUGE_PTEP_GET_AND_CLEAR
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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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#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
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pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
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unsigned long addr, pte_t *ptep);
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#define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT
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void huge_ptep_set_wrprotect(struct mm_struct *mm,
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unsigned long addr, pte_t *ptep);
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#define __HAVE_ARCH_HUGE_PTEP_SET_ACCESS_FLAGS
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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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#define __HAVE_ARCH_HUGE_PTEP_GET
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pte_t huge_ptep_get(pte_t *ptep);
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pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags);
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#define arch_make_huge_pte arch_make_huge_pte
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#endif /*CONFIG_RISCV_ISA_SVNAPOT*/
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#include <asm-generic/hugetlb.h>
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#endif /* _ASM_RISCV_HUGETLB_H */
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