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