/* * TLB shootdown specifics for powerpc * * Copyright (C) 2002 Anton Blanchard, IBM Corp. * Copyright (C) 2002 Paul Mackerras, IBM Corp. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef _ASM_POWERPC_TLB_H #define _ASM_POWERPC_TLB_H #ifdef __KERNEL__ #ifndef __powerpc64__ #include <asm/pgtable.h> #endif #include <asm/pgalloc.h> #include <asm/tlbflush.h> #ifndef __powerpc64__ #include <asm/page.h> #include <asm/mmu.h> #endif #include <linux/pagemap.h> struct mmu_gather; #define tlb_start_vma(tlb, vma) do { } while (0) #define tlb_end_vma(tlb, vma) do { } while (0) #if !defined(CONFIG_PPC_STD_MMU) #define tlb_flush(tlb) flush_tlb_mm((tlb)->mm) #elif defined(__powerpc64__) extern void pte_free_finish(void); static inline void tlb_flush(struct mmu_gather *tlb) { struct ppc64_tlb_batch *tlbbatch = &__get_cpu_var(ppc64_tlb_batch); /* If there's a TLB batch pending, then we must flush it because the * pages are going to be freed and we really don't want to have a CPU * access a freed page because it has a stale TLB */ if (tlbbatch->index) __flush_tlb_pending(tlbbatch); pte_free_finish(); } #else extern void tlb_flush(struct mmu_gather *tlb); #endif /* Get the generic bits... */ #include <asm-generic/tlb.h> #if !defined(CONFIG_PPC_STD_MMU) || defined(__powerpc64__) #define __tlb_remove_tlb_entry(tlb, pte, address) do { } while (0) #else extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, unsigned long address); static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep, unsigned long address) { if (pte_val(*ptep) & _PAGE_HASHPTE) flush_hash_entry(tlb->mm, ptep, address); } #endif #endif /* __KERNEL__ */ #endif /* __ASM_POWERPC_TLB_H */