mirror of https://gitee.com/openkylin/linux.git
82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/*
|
|
* 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 */
|