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 /*
   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 */