1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19#ifndef __ASM_TLB_H
20#define __ASM_TLB_H
21
22#include <linux/pagemap.h>
23#include <linux/swap.h>
24
25#ifdef CONFIG_HAVE_RCU_TABLE_FREE
26
27#define tlb_remove_entry(tlb, entry) tlb_remove_table(tlb, entry)
28static inline void __tlb_remove_table(void *_table)
29{
30 free_page_and_swap_cache((struct page *)_table);
31}
32#else
33#define tlb_remove_entry(tlb, entry) tlb_remove_page(tlb, entry)
34#endif
35
36#include <asm-generic/tlb.h>
37
38static inline void tlb_flush(struct mmu_gather *tlb)
39{
40 if (tlb->fullmm) {
41 flush_tlb_mm(tlb->mm);
42 } else {
43 struct vm_area_struct vma = { .vm_mm = tlb->mm, };
44 flush_tlb_range(&vma, tlb->start, tlb->end);
45 }
46}
47
48static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte,
49 unsigned long addr)
50{
51 __flush_tlb_pgtable(tlb->mm, addr);
52 pgtable_page_dtor(pte);
53 tlb_remove_entry(tlb, pte);
54}
55
56#if CONFIG_ARM64_PGTABLE_LEVELS > 2
57static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp,
58 unsigned long addr)
59{
60 __flush_tlb_pgtable(tlb->mm, addr);
61 tlb_remove_entry(tlb, virt_to_page(pmdp));
62}
63#endif
64
65#if CONFIG_ARM64_PGTABLE_LEVELS > 3
66static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pudp,
67 unsigned long addr)
68{
69 __flush_tlb_pgtable(tlb->mm, addr);
70 tlb_remove_entry(tlb, virt_to_page(pudp));
71}
72#endif
73
74#endif
75