arch/sh/include/asm/hugetlb.h

   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 pte_t huge_ptep_get(pte_t *ptep)
  36 {
  37         return *ptep;
  38 }
  39
  40 static inline void arch_clear_hugepage_flags(struct page *page)
  41 {
  42         clear_bit(PG_dcache_clean, &page->flags);
  43 }
  44
  45 #include <asm-generic/hugetlb.h>
  46
  47 #endif /* _ASM_SH_HUGETLB_H */