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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_SH_HUGETLB_H
#define _ASM_SH_HUGETLB_H
#include <asm/cacheflush.h>
#include <asm/page.h>
/*
* If the arch doesn't supply something else, assume that hugepage
* size aligned regions are ok without further preparation.
*/
#define __HAVE_ARCH_PREPARE_HUGEPAGE_RANGE
static inline int prepare_hugepage_range(struct file *file,
unsigned long addr, unsigned long len)
{
if (len & ~HPAGE_MASK)
return -EINVAL;
if (addr & ~HPAGE_MASK)
return -EINVAL;
return 0;
}
#define __HAVE_ARCH_HUGE_PTEP_CLEAR_FLUSH
static inline pte_t huge_ptep_clear_flush(struct vm_area_struct *vma,
unsigned long addr, pte_t *ptep)
{
return *ptep;
}
static inline void arch_clear_hugetlb_flags(struct folio *folio)
{
clear_bit(PG_dcache_clean, &folio->flags);
}
#define arch_clear_hugetlb_flags arch_clear_hugetlb_flags
#include <asm-generic/hugetlb.h>
#endif /* _ASM_SH_HUGETLB_H */
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