blob: da3a3179a85da26e74522707ecca1d6a6c3da8b6 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/* tlbflush.h: TLB flushing functions
2 *
3 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
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
12#ifndef _ASM_TLBFLUSH_H
13#define _ASM_TLBFLUSH_H
14
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <linux/mm.h>
16#include <asm/processor.h>
17
18#ifdef CONFIG_MMU
19
20#ifndef __ASSEMBLY__
21extern void asmlinkage __flush_tlb_all(void);
22extern void asmlinkage __flush_tlb_mm(unsigned long contextid);
23extern void asmlinkage __flush_tlb_page(unsigned long contextid, unsigned long start);
24extern void asmlinkage __flush_tlb_range(unsigned long contextid,
25 unsigned long start, unsigned long end);
26#endif /* !__ASSEMBLY__ */
27
28#define flush_tlb_all() \
29do { \
30 preempt_disable(); \
31 __flush_tlb_all(); \
32 preempt_enable(); \
33} while(0)
34
35#define flush_tlb_mm(mm) \
36do { \
37 preempt_disable(); \
38 __flush_tlb_mm((mm)->context.id); \
39 preempt_enable(); \
40} while(0)
41
42#define flush_tlb_range(vma,start,end) \
43do { \
44 preempt_disable(); \
45 __flush_tlb_range((vma)->vm_mm->context.id, start, end); \
46 preempt_enable(); \
47} while(0)
48
49#define flush_tlb_page(vma,addr) \
50do { \
51 preempt_disable(); \
52 __flush_tlb_page((vma)->vm_mm->context.id, addr); \
53 preempt_enable(); \
54} while(0)
55
56
57#define __flush_tlb_global() flush_tlb_all()
58#define flush_tlb() flush_tlb_all()
59#define flush_tlb_kernel_range(start, end) flush_tlb_all()
60#define flush_tlb_pgtables(mm,start,end) \
61 asm volatile("movgs %0,scr0 ! movgs %0,scr1" :: "r"(ULONG_MAX) : "memory");
62
63#else
64
65#define flush_tlb() BUG()
66#define flush_tlb_all() BUG()
67#define flush_tlb_mm(mm) BUG()
68#define flush_tlb_page(vma,addr) BUG()
69#define flush_tlb_range(mm,start,end) BUG()
70#define flush_tlb_pgtables(mm,start,end) BUG()
71#define flush_tlb_kernel_range(start, end) BUG()
72
73#endif
74
75
76#endif /* _ASM_TLBFLUSH_H */