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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mm/tlb-v3.S
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/arm/mm/tlb-v3.S')
-rw-r--r--arch/arm/mm/tlb-v3.S52
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/arm/mm/tlb-v3.S b/arch/arm/mm/tlb-v3.S
new file mode 100644
index 000000000000..44b0daeaff9b
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+++ b/arch/arm/mm/tlb-v3.S
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1/*
2 * linux/arch/arm/mm/tlbv3.S
3 *
4 * Copyright (C) 1997-2002 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 * ARM architecture version 3 TLB handling functions.
11 *
12 * Processors: ARM610, ARM710.
13 */
14#include <linux/linkage.h>
15#include <linux/init.h>
16#include <asm/constants.h>
17#include <asm/tlbflush.h>
18#include "proc-macros.S"
19
20 .align 5
21/*
22 * v3_flush_user_tlb_range(start, end, mm)
23 *
24 * Invalidate a range of TLB entries in the specified address space.
25 *
26 * - start - range start address
27 * - end - range end address
28 * - mm - mm_struct describing address space
29 */
30 .align 5
31ENTRY(v3_flush_user_tlb_range)
32 vma_vm_mm r2, r2
33 act_mm r3 @ get current->active_mm
34 teq r2, r3 @ == mm ?
35 movne pc, lr @ no, we dont do anything
36ENTRY(v3_flush_kern_tlb_range)
37 bic r0, r0, #0x0ff
38 bic r0, r0, #0xf00
391: mcr p15, 0, r0, c6, c0, 0 @ invalidate TLB entry
40 add r0, r0, #PAGE_SZ
41 cmp r0, r1
42 blo 1b
43 mov pc, lr
44
45 __INITDATA
46
47 .type v3_tlb_fns, #object
48ENTRY(v3_tlb_fns)
49 .long v3_flush_user_tlb_range
50 .long v3_flush_kern_tlb_range
51 .long v3_tlb_flags
52 .size v3_tlb_fns, . - v3_tlb_fns