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
13static 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
24static 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
30static inline void arch_clear_hugepage_flags(struct page *page)
31{
32	clear_bit(PG_dcache_clean, &page->flags);
33}
34#define arch_clear_hugepage_flags arch_clear_hugepage_flags
35
36#include <asm-generic/hugetlb.h>
37
38#endif /* _ASM_SH_HUGETLB_H */
39