1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_SH_HUGETLB_H 3 #define _ASM_SH_HUGETLB_H 4 5 #include <asm/cacheflush.h> 6 #include <asm/page.h> 7 8 static inline int is_hugepage_only_range(struct mm_struct *mm, 9 unsigned long addr, 10 unsigned long len) { 11 return 0; 12 } 13 14 /* 15 * If the arch doesn't supply something else, assume that hugepage 16 * size aligned regions are ok without further preparation. 17 */ 18 #define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE 19 static inline int prepare_hugepage_range(struct file *file, 20 unsigned long addr, unsigned long len) 21 { 22 if (len & ~HPAGE_MASK) 23 return -EINVAL; 24 if (addr & ~HPAGE_MASK) 25 return -EINVAL; 26 return 0; 27 } 28 29 #define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH 30 static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, 31 unsigned long addr, pte_t *ptep) 32 { 33 } 34 35 static inline void arch_clear_hugepage_flags(struct page *page) 36 { 37 clear_bit(PG_dcache_clean, &page->flags); 38 } 39 40 #include <asm-generic/hugetlb.h> 41 42 #endif /* _ASM_SH_HUGETLB_H */ 43