arch/nios2/include/asm/tlbflush.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
   4  */
   5
   6 #ifndef _ASM_NIOS2_TLBFLUSH_H
   7 #define _ASM_NIOS2_TLBFLUSH_H
   8
   9 struct mm_struct;
  10
  11 /*
  12  * TLB flushing:
  13  *
  14  *  - flush_tlb_all() flushes all processes TLB entries
  15  *  - flush_tlb_mm(mm) flushes the specified mm context TLB entries
  16  *  - flush_tlb_range(vma, start, end) flushes a range of pages
  17  *  - flush_tlb_page(vma, address) flushes a page
  18  *  - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
  19  *  - flush_tlb_kernel_page(address) flushes a kernel page
  20  *
  21  *  - reload_tlb_page(vma, address, pte) flushes the TLB for address like
  22  *    flush_tlb_page, then replaces it with a TLB for pte.
  23  */
  24 extern void flush_tlb_all(void);
  25 extern void flush_tlb_mm(struct mm_struct *mm);
  26 extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
  27                             unsigned long end);
  28 extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
  29
  30 static inline void flush_tlb_page(struct vm_area_struct *vma,
  31                                   unsigned long address)
  32 {
  33         flush_tlb_range(vma, address, address + PAGE_SIZE);
  34 }
  35
  36 static inline void flush_tlb_kernel_page(unsigned long address)
  37 {
  38         flush_tlb_kernel_range(address, address + PAGE_SIZE);
  39 }
  40
  41 extern void reload_tlb_page(struct vm_area_struct *vma, unsigned long addr,
  42                             pte_t pte);
  43
  44 #endif /* _ASM_NIOS2_TLBFLUSH_H */