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Diffstat (limited to 'arch/arm/mm/copypage-v6.c')
-rw-r--r--arch/arm/mm/copypage-v6.c16
1 files changed, 7 insertions, 9 deletions
diff --git a/arch/arm/mm/copypage-v6.c b/arch/arm/mm/copypage-v6.c
index 27d041574ea7..269ce6913ee9 100644
--- a/arch/arm/mm/copypage-v6.c
+++ b/arch/arm/mm/copypage-v6.c
@@ -22,9 +22,7 @@
22#endif 22#endif
23 23
24#define from_address (0xffff8000) 24#define from_address (0xffff8000)
25#define from_pgprot PAGE_KERNEL
26#define to_address (0xffffc000) 25#define to_address (0xffffc000)
27#define to_pgprot PAGE_KERNEL
28 26
29#define TOP_PTE(x) pte_offset_kernel(top_pmd, x) 27#define TOP_PTE(x) pte_offset_kernel(top_pmd, x)
30 28
@@ -34,7 +32,7 @@ static DEFINE_SPINLOCK(v6_lock);
34 * Copy the user page. No aliasing to deal with so we can just 32 * Copy the user page. No aliasing to deal with so we can just
35 * attack the kernel's existing mapping of these pages. 33 * attack the kernel's existing mapping of these pages.
36 */ 34 */
37void v6_copy_user_page_nonaliasing(void *kto, const void *kfrom, unsigned long vaddr) 35static void v6_copy_user_page_nonaliasing(void *kto, const void *kfrom, unsigned long vaddr)
38{ 36{
39 copy_page(kto, kfrom); 37 copy_page(kto, kfrom);
40} 38}
@@ -43,7 +41,7 @@ void v6_copy_user_page_nonaliasing(void *kto, const void *kfrom, unsigned long v
43 * Clear the user page. No aliasing to deal with so we can just 41 * Clear the user page. No aliasing to deal with so we can just
44 * attack the kernel's existing mapping of this page. 42 * attack the kernel's existing mapping of this page.
45 */ 43 */
46void v6_clear_user_page_nonaliasing(void *kaddr, unsigned long vaddr) 44static void v6_clear_user_page_nonaliasing(void *kaddr, unsigned long vaddr)
47{ 45{
48 clear_page(kaddr); 46 clear_page(kaddr);
49} 47}
@@ -51,7 +49,7 @@ void v6_clear_user_page_nonaliasing(void *kaddr, unsigned long vaddr)
51/* 49/*
52 * Copy the page, taking account of the cache colour. 50 * Copy the page, taking account of the cache colour.
53 */ 51 */
54void v6_copy_user_page_aliasing(void *kto, const void *kfrom, unsigned long vaddr) 52static void v6_copy_user_page_aliasing(void *kto, const void *kfrom, unsigned long vaddr)
55{ 53{
56 unsigned int offset = CACHE_COLOUR(vaddr); 54 unsigned int offset = CACHE_COLOUR(vaddr);
57 unsigned long from, to; 55 unsigned long from, to;
@@ -72,8 +70,8 @@ void v6_copy_user_page_aliasing(void *kto, const void *kfrom, unsigned long vadd
72 */ 70 */
73 spin_lock(&v6_lock); 71 spin_lock(&v6_lock);
74 72
75 set_pte(TOP_PTE(from_address) + offset, pfn_pte(__pa(kfrom) >> PAGE_SHIFT, from_pgprot)); 73 set_pte(TOP_PTE(from_address) + offset, pfn_pte(__pa(kfrom) >> PAGE_SHIFT, PAGE_KERNEL));
76 set_pte(TOP_PTE(to_address) + offset, pfn_pte(__pa(kto) >> PAGE_SHIFT, to_pgprot)); 74 set_pte(TOP_PTE(to_address) + offset, pfn_pte(__pa(kto) >> PAGE_SHIFT, PAGE_KERNEL));
77 75
78 from = from_address + (offset << PAGE_SHIFT); 76 from = from_address + (offset << PAGE_SHIFT);
79 to = to_address + (offset << PAGE_SHIFT); 77 to = to_address + (offset << PAGE_SHIFT);
@@ -91,7 +89,7 @@ void v6_copy_user_page_aliasing(void *kto, const void *kfrom, unsigned long vadd
91 * so remap the kernel page into the same cache colour as the user 89 * so remap the kernel page into the same cache colour as the user
92 * page. 90 * page.
93 */ 91 */
94void v6_clear_user_page_aliasing(void *kaddr, unsigned long vaddr) 92static void v6_clear_user_page_aliasing(void *kaddr, unsigned long vaddr)
95{ 93{
96 unsigned int offset = CACHE_COLOUR(vaddr); 94 unsigned int offset = CACHE_COLOUR(vaddr);
97 unsigned long to = to_address + (offset << PAGE_SHIFT); 95 unsigned long to = to_address + (offset << PAGE_SHIFT);
@@ -112,7 +110,7 @@ void v6_clear_user_page_aliasing(void *kaddr, unsigned long vaddr)
112 */ 110 */
113 spin_lock(&v6_lock); 111 spin_lock(&v6_lock);
114 112
115 set_pte(TOP_PTE(to_address) + offset, pfn_pte(__pa(kaddr) >> PAGE_SHIFT, to_pgprot)); 113 set_pte(TOP_PTE(to_address) + offset, pfn_pte(__pa(kaddr) >> PAGE_SHIFT, PAGE_KERNEL));
116 flush_tlb_kernel_page(to); 114 flush_tlb_kernel_page(to);
117 clear_page((void *)to); 115 clear_page((void *)to);
118 116