| /* SPDX-License-Identifier: GPL-2.0 */ | |
| #ifndef _ASM_X86_HUGETLB_H | |
| #define _ASM_X86_HUGETLB_H | |
| #include <asm/page.h> | |
| #include <asm-generic/hugetlb.h> | |
| #define hugepages_supported() boot_cpu_has(X86_FEATURE_PSE) | |
| static inline int is_hugepage_only_range(struct mm_struct *mm, | |
| unsigned long addr, | |
| unsigned long len) { | |
| return 0; | |
| } | |
| /* | |
| * If the arch doesn't supply something else, assume that hugepage | |
| * size aligned regions are ok without further preparation. | |
| */ | |
| static inline int prepare_hugepage_range(struct file *file, | |
| unsigned long addr, unsigned long len) | |
| { | |
| struct hstate *h = hstate_file(file); | |
| if (len & ~huge_page_mask(h)) | |
| return -EINVAL; | |
| if (addr & ~huge_page_mask(h)) | |
| return -EINVAL; | |
| return 0; | |
| } | |
| static inline void hugetlb_free_pgd_range(struct mmu_gather *tlb, | |
| unsigned long addr, unsigned long end, | |
| unsigned long floor, | |
| unsigned long ceiling) | |
| { | |
| free_pgd_range(tlb, addr, end, floor, ceiling); | |
| } | |
| static inline void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, | |
| pte_t *ptep, pte_t pte) | |
| { | |
| set_pte_at(mm, addr, ptep, pte); | |
| } | |
| static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, | |
| unsigned long addr, pte_t *ptep) | |
| { | |
| return ptep_get_and_clear(mm, addr, ptep); | |
| } | |
| static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, | |
| unsigned long addr, pte_t *ptep) | |
| { | |
| ptep_clear_flush(vma, addr, ptep); | |
| } | |
| static inline int huge_pte_none(pte_t pte) | |
| { | |
| return pte_none(pte); | |
| } | |
| static inline pte_t huge_pte_wrprotect(pte_t pte) | |
| { | |
| return pte_wrprotect(pte); | |
| } | |
| static inline void huge_ptep_set_wrprotect(struct mm_struct *mm, | |
| unsigned long addr, pte_t *ptep) | |
| { | |
| ptep_set_wrprotect(mm, addr, ptep); | |
| } | |
| static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma, | |
| unsigned long addr, pte_t *ptep, | |
| pte_t pte, int dirty) | |
| { | |
| return ptep_set_access_flags(vma, addr, ptep, pte, dirty); | |
| } | |
| static inline pte_t huge_ptep_get(pte_t *ptep) | |
| { | |
| return *ptep; | |
| } | |
| static inline void arch_clear_hugepage_flags(struct page *page) | |
| { | |
| } | |
| #ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE | |
| static inline bool gigantic_page_supported(void) { return true; } | |
| #endif | |
| #endif /* _ASM_X86_HUGETLB_H */ |