2 * TLB shootdown specifics for PPC
4 * Copyright (C) 2002 Paul Mackerras, IBM Corp.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
14 #include <linux/config.h>
15 #include <asm/pgtable.h>
16 #include <asm/pgalloc.h>
17 #include <asm/tlbflush.h>
21 #ifdef CONFIG_PPC_STD_MMU
22 /* Classic PPC with hash-table based MMU... */
25 extern void tlb_flush(struct mmu_gather *tlb);
27 /* Get the generic bits... */
28 #include <asm-generic/tlb.h>
30 /* Nothing needed here in fact... */
31 #define tlb_start_vma(tlb, vma) do { } while (0)
32 #define tlb_end_vma(tlb, vma) do { } while (0)
34 extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep,
35 unsigned long address);
37 static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
38 unsigned long address)
40 if (pte_val(*ptep) & _PAGE_HASHPTE)
41 flush_hash_entry(tlb->mm, ptep, address);
45 /* Embedded PPC with software-loaded TLB, very simple... */
47 #define tlb_start_vma(tlb, vma) do { } while (0)
48 #define tlb_end_vma(tlb, vma) do { } while (0)
49 #define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0)
50 #define tlb_flush(tlb) flush_tlb_mm((tlb)->mm)
52 /* Get the generic bits... */
53 #include <asm-generic/tlb.h>
55 #endif /* CONFIG_PPC_STD_MMU */
57 #endif /* __PPC_TLB_H */