Commit | Line | Data |
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1da177e4 | 1 | /* |
9a0f78f6 | 2 | * TLB shootdown specifics for powerpc |
1da177e4 | 3 | * |
9a0f78f6 | 4 | * Copyright (C) 2002 Anton Blanchard, IBM Corp. |
1da177e4 LT |
5 | * Copyright (C) 2002 Paul Mackerras, IBM Corp. |
6 | * | |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; either version | |
10 | * 2 of the License, or (at your option) any later version. | |
11 | */ | |
9a0f78f6 SR |
12 | #ifndef _ASM_POWERPC_TLB_H |
13 | #define _ASM_POWERPC_TLB_H | |
88ced031 | 14 | #ifdef __KERNEL__ |
1da177e4 | 15 | |
9a0f78f6 | 16 | #ifndef __powerpc64__ |
1da177e4 | 17 | #include <asm/pgtable.h> |
9a0f78f6 | 18 | #endif |
1da177e4 LT |
19 | #include <asm/pgalloc.h> |
20 | #include <asm/tlbflush.h> | |
9a0f78f6 | 21 | #ifndef __powerpc64__ |
1da177e4 LT |
22 | #include <asm/page.h> |
23 | #include <asm/mmu.h> | |
9a0f78f6 | 24 | #endif |
1da177e4 | 25 | |
d4243c17 MD |
26 | #include <linux/pagemap.h> |
27 | ||
1da177e4 | 28 | struct mmu_gather; |
9a0f78f6 SR |
29 | |
30 | #define tlb_start_vma(tlb, vma) do { } while (0) | |
31 | #define tlb_end_vma(tlb, vma) do { } while (0) | |
32 | ||
33 | #if !defined(CONFIG_PPC_STD_MMU) | |
34 | ||
35 | #define tlb_flush(tlb) flush_tlb_mm((tlb)->mm) | |
36 | ||
37 | #elif defined(__powerpc64__) | |
38 | ||
39 | extern void pte_free_finish(void); | |
40 | ||
41 | static inline void tlb_flush(struct mmu_gather *tlb) | |
42 | { | |
6ad8d010 BH |
43 | struct ppc64_tlb_batch *tlbbatch = &__get_cpu_var(ppc64_tlb_batch); |
44 | ||
45 | /* If there's a TLB batch pending, then we must flush it because the | |
46 | * pages are going to be freed and we really don't want to have a CPU | |
47 | * access a freed page because it has a stale TLB | |
48 | */ | |
49 | if (tlbbatch->index) | |
50 | __flush_tlb_pending(tlbbatch); | |
51 | ||
9a0f78f6 SR |
52 | pte_free_finish(); |
53 | } | |
54 | ||
55 | #else | |
56 | ||
1da177e4 LT |
57 | extern void tlb_flush(struct mmu_gather *tlb); |
58 | ||
9a0f78f6 SR |
59 | #endif |
60 | ||
1da177e4 LT |
61 | /* Get the generic bits... */ |
62 | #include <asm-generic/tlb.h> | |
63 | ||
9a0f78f6 SR |
64 | #if !defined(CONFIG_PPC_STD_MMU) || defined(__powerpc64__) |
65 | ||
66 | #define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0) | |
1da177e4 | 67 | |
9a0f78f6 | 68 | #else |
1da177e4 LT |
69 | extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, |
70 | unsigned long address); | |
71 | ||
72 | static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep, | |
73 | unsigned long address) | |
74 | { | |
75 | if (pte_val(*ptep) & _PAGE_HASHPTE) | |
76 | flush_hash_entry(tlb->mm, ptep, address); | |
77 | } | |
78 | ||
9a0f78f6 | 79 | #endif |
88ced031 | 80 | #endif /* __KERNEL__ */ |
9a0f78f6 | 81 | #endif /* __ASM_POWERPC_TLB_H */ |