tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * TLB shootdown specifics for PPC
3 *
4 * Copyright (C) 2002 Paul Mackerras, IBM Corp.
5 *
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.
10 */
11#ifndef _PPC_TLB_H
12#define _PPC_TLB_H
13
14#include <linux/config.h>
15#include <asm/pgtable.h>
16#include <asm/pgalloc.h>
17#include <asm/tlbflush.h>
18#include <asm/page.h>
19#include <asm/mmu.h>
20
21#ifdef CONFIG_PPC_STD_MMU
22/* Classic PPC with hash-table based MMU... */
23
24struct mmu_gather;
25extern void tlb_flush(struct mmu_gather *tlb);
26
27/* Get the generic bits... */
28#include <asm-generic/tlb.h>
29
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)
33
34extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep,
35 unsigned long address);
36
37static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
38 unsigned long address)
39{
40 if (pte_val(*ptep) & _PAGE_HASHPTE)
41 flush_hash_entry(tlb->mm, ptep, address);
42}
43
44#else
45/* Embedded PPC with software-loaded TLB, very simple... */
46
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)
51
52/* Get the generic bits... */
53#include <asm-generic/tlb.h>
54
55#endif /* CONFIG_PPC_STD_MMU */
56
57#endif /* __PPC_TLB_H */