diff options
Diffstat (limited to 'arch/arm/mm/copypage-v3.c')
-rw-r--r-- | arch/arm/mm/copypage-v3.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/arch/arm/mm/copypage-v3.c b/arch/arm/mm/copypage-v3.c index 184911089e6c..52df8f04d3f7 100644 --- a/arch/arm/mm/copypage-v3.c +++ b/arch/arm/mm/copypage-v3.c | |||
@@ -8,16 +8,15 @@ | |||
8 | * published by the Free Software Foundation. | 8 | * published by the Free Software Foundation. |
9 | */ | 9 | */ |
10 | #include <linux/init.h> | 10 | #include <linux/init.h> |
11 | 11 | #include <linux/highmem.h> | |
12 | #include <asm/page.h> | ||
13 | 12 | ||
14 | /* | 13 | /* |
15 | * ARMv3 optimised copy_user_page | 14 | * ARMv3 optimised copy_user_highpage |
16 | * | 15 | * |
17 | * FIXME: do we need to handle cache stuff... | 16 | * FIXME: do we need to handle cache stuff... |
18 | */ | 17 | */ |
19 | void __attribute__((naked)) | 18 | static void __attribute__((naked)) |
20 | v3_copy_user_page(void *kto, const void *kfrom, unsigned long vaddr) | 19 | v3_copy_user_page(void *kto, const void *kfrom) |
21 | { | 20 | { |
22 | asm("\n\ | 21 | asm("\n\ |
23 | stmfd sp!, {r4, lr} @ 2\n\ | 22 | stmfd sp!, {r4, lr} @ 2\n\ |
@@ -38,6 +37,18 @@ v3_copy_user_page(void *kto, const void *kfrom, unsigned long vaddr) | |||
38 | : "r" (kfrom), "r" (kto), "I" (PAGE_SIZE / 64)); | 37 | : "r" (kfrom), "r" (kto), "I" (PAGE_SIZE / 64)); |
39 | } | 38 | } |
40 | 39 | ||
40 | void v3_copy_user_highpage(struct page *to, struct page *from, | ||
41 | unsigned long vaddr) | ||
42 | { | ||
43 | void *kto, *kfrom; | ||
44 | |||
45 | kto = kmap_atomic(to, KM_USER0); | ||
46 | kfrom = kmap_atomic(from, KM_USER1); | ||
47 | v3_copy_user_page(kto, kfrom); | ||
48 | kunmap_atomic(kfrom, KM_USER1); | ||
49 | kunmap_atomic(kto, KM_USER0); | ||
50 | } | ||
51 | |||
41 | /* | 52 | /* |
42 | * ARMv3 optimised clear_user_page | 53 | * ARMv3 optimised clear_user_page |
43 | * | 54 | * |
@@ -65,5 +76,5 @@ void __attribute__((naked)) v3_clear_user_page(void *kaddr, unsigned long vaddr) | |||
65 | 76 | ||
66 | struct cpu_user_fns v3_user_fns __initdata = { | 77 | struct cpu_user_fns v3_user_fns __initdata = { |
67 | .cpu_clear_user_page = v3_clear_user_page, | 78 | .cpu_clear_user_page = v3_clear_user_page, |
68 | .cpu_copy_user_page = v3_copy_user_page, | 79 | .cpu_copy_user_highpage = v3_copy_user_highpage, |
69 | }; | 80 | }; |