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 pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
25 unsigned long addr, pte_t *ptep)
26 {
27 return *ptep;
28 }
29
30 static inline void arch_clear_hugetlb_flags(struct folio *folio)
31 {
32 clear_bit(PG_dcache_clean, &folio->flags);
33 }
34 #define arch_clear_hugetlb_flags arch_clear_hugetlb_flags
35
36 #include <asm-generic/hugetlb.h>
37
38 #endif /* _ASM_SH_HUGETLB_H */
39
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