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Diffstat (limited to 'arch/arm/mm/copypage-v4mc.c')
-rw-r--r--arch/arm/mm/copypage-v4mc.c28
1 files changed, 14 insertions, 14 deletions
diff --git a/arch/arm/mm/copypage-v4mc.c b/arch/arm/mm/copypage-v4mc.c
index a7dc838fee76..a5eae503a34f 100644
--- a/arch/arm/mm/copypage-v4mc.c
+++ b/arch/arm/mm/copypage-v4mc.c
@@ -91,30 +91,30 @@ void v4_mc_copy_user_highpage(struct page *from, struct page *to,
91/* 91/*
92 * ARMv4 optimised clear_user_page 92 * ARMv4 optimised clear_user_page
93 */ 93 */
94void __attribute__((naked)) 94void v4_mc_clear_user_highpage(struct page *page, unsigned long vaddr)
95v4_mc_clear_user_page(void *kaddr, unsigned long vaddr)
96{ 95{
97 asm volatile( 96 void *kaddr = kmap_atomic(page, KM_USER0);
98 "str lr, [sp, #-4]!\n\ 97 asm volatile("\
99 mov r1, %0 @ 1\n\ 98 mov r1, %0 @ 1\n\
100 mov r2, #0 @ 1\n\ 99 mov r2, #0 @ 1\n\
101 mov r3, #0 @ 1\n\ 100 mov r3, #0 @ 1\n\
102 mov ip, #0 @ 1\n\ 101 mov ip, #0 @ 1\n\
103 mov lr, #0 @ 1\n\ 102 mov lr, #0 @ 1\n\
1041: mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line\n\ 1031: mcr p15, 0, %0, c7, c6, 1 @ 1 invalidate D line\n\
105 stmia r0!, {r2, r3, ip, lr} @ 4\n\ 104 stmia %0!, {r2, r3, ip, lr} @ 4\n\
106 stmia r0!, {r2, r3, ip, lr} @ 4\n\ 105 stmia %0!, {r2, r3, ip, lr} @ 4\n\
107 mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line\n\ 106 mcr p15, 0, %0, c7, c6, 1 @ 1 invalidate D line\n\
108 stmia r0!, {r2, r3, ip, lr} @ 4\n\ 107 stmia %0!, {r2, r3, ip, lr} @ 4\n\
109 stmia r0!, {r2, r3, ip, lr} @ 4\n\ 108 stmia %0!, {r2, r3, ip, lr} @ 4\n\
110 subs r1, r1, #1 @ 1\n\ 109 subs r1, r1, #1 @ 1\n\
111 bne 1b @ 1\n\ 110 bne 1b @ 1"
112 ldr pc, [sp], #4"
113 : 111 :
114 : "I" (PAGE_SIZE / 64)); 112 : "r" (kaddr), "I" (PAGE_SIZE / 64)
113 : "r1", "r2", "r3", "ip", "lr");
114 kunmap_atomic(kaddr, KM_USER0);
115} 115}
116 116
117struct cpu_user_fns v4_mc_user_fns __initdata = { 117struct cpu_user_fns v4_mc_user_fns __initdata = {
118 .cpu_clear_user_page = v4_mc_clear_user_page, 118 .cpu_clear_user_highpage = v4_mc_clear_user_highpage,
119 .cpu_copy_user_highpage = v4_mc_copy_user_highpage, 119 .cpu_copy_user_highpage = v4_mc_copy_user_highpage,
120}; 120};