projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 LT |
25 | |
| 26 | struct mmu_gather; | |
| 9a0f78f6 SR |
27 | |
| 28 | #define tlb_start_vma(tlb, vma) do { } while (0) | |
| 29 | #define tlb_end_vma(tlb, vma) do { } while (0) | |
| 30 | ||
| 31 | #if !defined(CONFIG_PPC_STD_MMU) | |
| 32 | ||
| 33 | #define tlb_flush(tlb) flush_tlb_mm((tlb)->mm) | |
| 34 | ||
| 35 | #elif defined(__powerpc64__) | |
| 36 | ||
| 37 | extern void pte_free_finish(void); | |
| 38 | ||
| 39 | static inline void tlb_flush(struct mmu_gather *tlb) | |
| 40 | { | |
| 6ad8d010 BH |
41 | struct ppc64_tlb_batch *tlbbatch = &__get_cpu_var(ppc64_tlb_batch); |
| 42 | ||
| 43 | /* If there's a TLB batch pending, then we must flush it because the | |
| 44 | * pages are going to be freed and we really don't want to have a CPU | |
| 45 | * access a freed page because it has a stale TLB | |
| 46 | */ | |
| 47 | if (tlbbatch->index) | |
| 48 | __flush_tlb_pending(tlbbatch); | |
| 49 | ||
| 9a0f78f6 SR |
50 | pte_free_finish(); |
| 51 | } | |
| 52 | ||
| 53 | #else | |
| 54 | ||
| 1da177e4 LT |
55 | extern void tlb_flush(struct mmu_gather *tlb); |
| 56 | ||
| 9a0f78f6 SR |
57 | #endif |
| 58 | ||
| 1da177e4 LT |
59 | /* Get the generic bits... */ |
| 60 | #include <asm-generic/tlb.h> | |
| 61 | ||
| 9a0f78f6 SR |
62 | #if !defined(CONFIG_PPC_STD_MMU) || defined(__powerpc64__) |
| 63 | ||
| 64 | #define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0) | |
| 1da177e4 | 65 | |
| 9a0f78f6 | 66 | #else |
| 1da177e4 LT |
67 | extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, |
| 68 | unsigned long address); | |
| 69 | ||
| 70 | static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep, | |
| 71 | unsigned long address) | |
| 72 | { | |
| 73 | if (pte_val(*ptep) & _PAGE_HASHPTE) | |
| 74 | flush_hash_entry(tlb->mm, ptep, address); | |
| 75 | } | |
| 76 | ||
| 9a0f78f6 | 77 | #endif |
| 88ced031 | 78 | #endif /* __KERNEL__ */ |
| 9a0f78f6 | 79 | #endif /* __ASM_POWERPC_TLB_H */ |