sh: wire up clear_user_highpage() for sh4, convert sh7705.
This wires up clear_user_highpage() on SH-4 and subsequently converts the
SH7705 32kB cache mode over to using it. Now that the SH-4 implementation
handles all of the dcache purging directly in the aliasing case, there is
no need to do this in the default clear_page() implementation.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/include/asm/page.h b/arch/sh/include/asm/page.h
index a31ab40..5208b7b 100644
--- a/arch/sh/include/asm/page.h
+++ b/arch/sh/include/asm/page.h
@@ -56,21 +56,25 @@
return (addr1 ^ addr2) & shm_align_mask;
}
-extern void clear_page(void *to);
+
+#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
extern void copy_page(void *to, void *from);
+struct page;
+struct vm_area_struct;
+
#if !defined(CONFIG_CACHE_OFF) && defined(CONFIG_MMU) && \
(defined(CONFIG_CPU_SH5) || defined(CONFIG_CPU_SH4) || \
defined(CONFIG_SH7705_CACHE_32KB))
-struct page;
-struct vm_area_struct;
extern void clear_user_page(void *to, unsigned long address, struct page *page);
extern void copy_user_page(void *to, void *from, unsigned long address,
struct page *page);
-#if defined(CONFIG_CPU_SH4)
+#if defined(CONFIG_CPU_SH4) || defined(CONFIG_SH7705_CACHE_32KB)
extern void copy_user_highpage(struct page *to, struct page *from,
unsigned long vaddr, struct vm_area_struct *vma);
#define __HAVE_ARCH_COPY_USER_HIGHPAGE
+extern void clear_user_highpage(struct page *page, unsigned long vaddr);
+#define clear_user_highpage clear_user_highpage
#endif
#else
#define clear_user_page(page, vaddr, pg) clear_page(page)