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
 9struct 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 */
24extern void flush_tlb_all(void);
25extern void flush_tlb_mm(struct mm_struct *mm);
26extern void flush_tlb_range(struct vm_area_struct *vma, unsigned long start,
27			    unsigned long end);
28extern void flush_tlb_kernel_range(unsigned long start, unsigned long end);
29
30static 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
36static inline void flush_tlb_kernel_page(unsigned long address)
37{
38	flush_tlb_kernel_range(address, address + PAGE_SIZE);
39}
40
41extern void reload_tlb_page(struct vm_area_struct *vma, unsigned long addr,
42			    pte_t pte);
43
44#endif /* _ASM_NIOS2_TLBFLUSH_H */