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Diffstat (limited to 'arch/arc/include/asm/page.h')
-rw-r--r--arch/arc/include/asm/page.h16
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/arc/include/asm/page.h b/arch/arc/include/asm/page.h
index bdf5461..374a355 100644
--- a/arch/arc/include/asm/page.h
+++ b/arch/arc/include/asm/page.h
@@ -16,13 +16,27 @@
#define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
#define free_user_page(page, addr) free_page(addr)
-/* TBD: for now don't worry about VIPT D$ aliasing */
#define clear_page(paddr) memset((paddr), 0, PAGE_SIZE)
#define copy_page(to, from) memcpy((to), (from), PAGE_SIZE)
+#ifndef CONFIG_ARC_CACHE_VIPT_ALIASING
+
#define clear_user_page(addr, vaddr, pg) clear_page(addr)
#define copy_user_page(vto, vfrom, vaddr, pg) copy_page(vto, vfrom)
+#else /* VIPT aliasing dcache */
+
+struct vm_area_struct;
+struct page;
+
+#define __HAVE_ARCH_COPY_USER_HIGHPAGE
+
+void copy_user_highpage(struct page *to, struct page *from,
+ unsigned long u_vaddr, struct vm_area_struct *vma);
+void clear_user_page(void *to, unsigned long u_vaddr, struct page *page);
+
+#endif /* CONFIG_ARC_CACHE_VIPT_ALIASING */
+
#undef STRICT_MM_TYPECHECKS
#ifdef STRICT_MM_TYPECHECKS