/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H #define _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H #define PAGE_SHIFT_8M 23 static inline void flush_hugetlb_page(struct vm_area_struct *vma, unsigned long vmaddr) { flush_tlb_page(vma, vmaddr); } static inline int check_and_get_huge_psize(int shift) { return shift_to_mmu_psize(shift); } #define __HAVE_ARCH_HUGE_SET_HUGE_PTE_AT void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte, unsigned long sz); #define __HAVE_ARCH_HUGE_PTEP_GET static inline pte_t huge_ptep_get(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { if (ptep_is_8m_pmdp(mm, addr, ptep)) ptep = pte_offset_kernel((pmd_t *)ptep, ALIGN_DOWN(addr, SZ_8M)); return ptep_get(ptep); } #define __HAVE_ARCH_HUGE_PTE_CLEAR static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep, unsigned long sz) { pte_update(mm, addr, ptep, ~0UL, 0, 1); } #define __HAVE_ARCH_HUGE_PTEP_SET_WRPROTECT static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { unsigned long clr = ~pte_val(pte_wrprotect(__pte(~0))); unsigned long set = pte_val(pte_wrprotect(__pte(0))); pte_update(mm, addr, ptep, clr, set, 1); } #ifdef CONFIG_PPC_4K_PAGES static inline pte_t arch_make_huge_pte(pte_t entry, unsigned int shift, vm_flags_t flags) { size_t size = 1UL << shift; if (size == SZ_16K) return __pte(pte_val(entry) | _PAGE_SPS); else return __pte(pte_val(entry) | _PAGE_SPS | _PAGE_HUGE); } #define arch_make_huge_pte arch_make_huge_pte #endif #endif /* _ASM_POWERPC_NOHASH_32_HUGETLB_8XX_H */