2 * linux/arch/arm/mm/tlbv4.S
4 * Copyright (C) 1997-2002 Russell King
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.
10 * ARM architecture version 4 TLB handling functions.
11 * These assume a split I/D TLBs, and no write buffer.
15 #include <linux/linkage.h>
16 #include <linux/init.h>
17 #include <asm/constants.h>
18 #include <asm/tlbflush.h>
19 #include "proc-macros.S"
23 * v4_flush_user_tlb_range(start, end, mm)
25 * Invalidate a range of TLB entries in the specified user address space.
27 * - start - range start address
28 * - end - range end address
29 * - mm - mm_struct describing address space
32 ENTRY(v4_flush_user_tlb_range)
34 act_mm r3 @ get current->active_mm
35 eors r3, ip, r3 @ == mm ?
36 movne pc, lr @ no, we dont do anything
37 .v4_flush_kern_tlb_range:
40 1: mcr p15, 0, r0, c8, c7, 1 @ invalidate TLB entry
47 * v4_flush_kern_tlb_range(start, end)
49 * Invalidate a range of TLB entries in the specified kernel
52 * - start - virtual address (may not be aligned)
53 * - end - virtual address (may not be aligned)
55 .globl v4_flush_kern_tlb_range
56 .equ v4_flush_kern_tlb_range, .v4_flush_kern_tlb_range
60 .type v4_tlb_fns, #object
62 .long v4_flush_user_tlb_range
63 .long v4_flush_kern_tlb_range
65 .size v4_tlb_fns, . - v4_tlb_fns