arch/powerpc/include/asm/tlb.h

   1 /*
   2  *      TLB shootdown specifics for powerpc
   3  *
   4  * Copyright (C) 2002 Anton Blanchard, IBM Corp.
   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  */
  12 #ifndef _ASM_POWERPC_TLB_H
  13 #define _ASM_POWERPC_TLB_H
  14 #ifdef __KERNEL__
  15
  16 #ifndef __powerpc64__
  17 #include <asm/pgtable.h>
  18 #endif
  19 #include <asm/pgalloc.h>
  20 #include <asm/tlbflush.h>
  21 #ifndef __powerpc64__
  22 #include <asm/page.h>
  23 #include <asm/mmu.h>
  24 #endif
  25
  26 #include <linux/pagemap.h>
  27
  28 #define tlb_start_vma(tlb, vma) do { } while (0)
  29 #define tlb_end_vma(tlb, vma)   do { } while (0)
  30
  31 #define HAVE_ARCH_MMU_GATHER 1
  32
  33 struct pte_freelist_batch;
  34
  35 struct arch_mmu_gather {
  36         struct pte_freelist_batch *batch;
  37 };
  38
  39 #define ARCH_MMU_GATHER_INIT (struct arch_mmu_gather){ .batch = NULL, }
  40
  41 extern void tlb_flush(struct mmu_gather *tlb);
  42
  43 /* Get the generic bits... */
  44 #include <asm-generic/tlb.h>
  45
  46 extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep,
  47                              unsigned long address);
  48
  49 static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
  50                                           unsigned long address)
  51 {
  52 #ifdef CONFIG_PPC_STD_MMU_32
  53         if (pte_val(*ptep) & _PAGE_HASHPTE)
  54                 flush_hash_entry(tlb->mm, ptep, address);
  55 #endif
  56 }
  57
  58 #endif /* __KERNEL__ */
  59 #endif /* __ASM_POWERPC_TLB_H */