diff options
Diffstat (limited to 'arch/arm/mm/copypage-v4wb.c')
| -rw-r--r-- | arch/arm/mm/copypage-v4wb.c | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/arch/arm/mm/copypage-v4wb.c b/arch/arm/mm/copypage-v4wb.c index 186a68a794a..9144a96037b 100644 --- a/arch/arm/mm/copypage-v4wb.c +++ b/arch/arm/mm/copypage-v4wb.c @@ -64,31 +64,31 @@ void v4wb_copy_user_highpage(struct page *to, struct page *from, * * Same story as above. */ -void __attribute__((naked)) -v4wb_clear_user_page(void *kaddr, unsigned long vaddr) +void v4wb_clear_user_highpage(struct page *page, unsigned long vaddr) { + void *kaddr = kmap_atomic(page, KM_USER0); asm("\ - str lr, [sp, #-4]!\n\ - mov r1, %0 @ 1\n\ + mov r1, %1 @ 1\n\ mov r2, #0 @ 1\n\ mov r3, #0 @ 1\n\ mov ip, #0 @ 1\n\ mov lr, #0 @ 1\n\ -1: mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line\n\ - stmia r0!, {r2, r3, ip, lr} @ 4\n\ - stmia r0!, {r2, r3, ip, lr} @ 4\n\ - mcr p15, 0, r0, c7, c6, 1 @ 1 invalidate D line\n\ - stmia r0!, {r2, r3, ip, lr} @ 4\n\ - stmia r0!, {r2, r3, ip, lr} @ 4\n\ +1: mcr p15, 0, %0, c7, c6, 1 @ 1 invalidate D line\n\ + stmia %0!, {r2, r3, ip, lr} @ 4\n\ + stmia %0!, {r2, r3, ip, lr} @ 4\n\ + mcr p15, 0, %0, c7, c6, 1 @ 1 invalidate D line\n\ + stmia %0!, {r2, r3, ip, lr} @ 4\n\ + stmia %0!, {r2, r3, ip, lr} @ 4\n\ subs r1, r1, #1 @ 1\n\ bne 1b @ 1\n\ - mcr p15, 0, r1, c7, c10, 4 @ 1 drain WB\n\ - ldr pc, [sp], #4" + mcr p15, 0, r1, c7, c10, 4 @ 1 drain WB" : - : "I" (PAGE_SIZE / 64)); + : "r" (kaddr), "I" (PAGE_SIZE / 64) + : "r1", "r2", "r3", "ip", "lr"); + kunmap_atomic(kaddr, KM_USER0); } struct cpu_user_fns v4wb_user_fns __initdata = { - .cpu_clear_user_page = v4wb_clear_user_page, + .cpu_clear_user_highpage = v4wb_clear_user_highpage, .cpu_copy_user_highpage = v4wb_copy_user_highpage, }; |