diff options
Diffstat (limited to 'arch/arm/mm/copypage-feroceon.c')
| -rw-r--r-- | arch/arm/mm/copypage-feroceon.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/arch/arm/mm/copypage-feroceon.c b/arch/arm/mm/copypage-feroceon.c index c8347670ab00..edd71686b8df 100644 --- a/arch/arm/mm/copypage-feroceon.c +++ b/arch/arm/mm/copypage-feroceon.c @@ -7,15 +7,14 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * - * This handles copy_user_page and clear_user_page on Feroceon + * This handles copy_user_highpage and clear_user_page on Feroceon * more optimally than the generic implementations. */ #include <linux/init.h> +#include <linux/highmem.h> -#include <asm/page.h> - -void __attribute__((naked)) -feroceon_copy_user_page(void *kto, const void *kfrom, unsigned long vaddr) +static void __attribute__((naked)) +feroceon_copy_user_page(void *kto, const void *kfrom) { asm("\ stmfd sp!, {r4-r9, lr} \n\ @@ -68,6 +67,18 @@ feroceon_copy_user_page(void *kto, const void *kfrom, unsigned long vaddr) : "I" (PAGE_SIZE)); } +void feroceon_copy_user_highpage(struct page *to, struct page *from, + unsigned long vaddr) +{ + void *kto, *kfrom; + + kto = kmap_atomic(to, KM_USER0); + kfrom = kmap_atomic(from, KM_USER1); + feroceon_copy_user_page(kto, kfrom); + kunmap_atomic(kfrom, KM_USER1); + kunmap_atomic(kto, KM_USER0); +} + void __attribute__((naked)) feroceon_clear_user_page(void *kaddr, unsigned long vaddr) { @@ -95,6 +106,6 @@ feroceon_clear_user_page(void *kaddr, unsigned long vaddr) struct cpu_user_fns feroceon_user_fns __initdata = { .cpu_clear_user_page = feroceon_clear_user_page, - .cpu_copy_user_page = feroceon_copy_user_page, + .cpu_copy_user_highpage = feroceon_copy_user_highpage, }; |