v4.19.13 snapshot.
diff --git a/arch/arc/include/asm/page.h b/arch/arc/include/asm/page.h
new file mode 100644
index 0000000..09ddddf
--- /dev/null
+++ b/arch/arc/include/asm/page.h
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_ARC_PAGE_H
+#define __ASM_ARC_PAGE_H
+
+#include <uapi/asm/page.h>
+
+#ifndef __ASSEMBLY__
+
+#define clear_page(paddr) memset((paddr), 0, PAGE_SIZE)
+#define copy_page(to, from) memcpy((to), (from), PAGE_SIZE)
+
+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);
+
+#undef STRICT_MM_TYPECHECKS
+
+#ifdef STRICT_MM_TYPECHECKS
+/*
+ * These are used to make use of C type-checking..
+ */
+typedef struct {
+#ifdef CONFIG_ARC_HAS_PAE40
+ unsigned long long pte;
+#else
+ unsigned long pte;
+#endif
+} pte_t;
+typedef struct {
+ unsigned long pgd;
+} pgd_t;
+typedef struct {
+ unsigned long pgprot;
+} pgprot_t;
+
+#define pte_val(x) ((x).pte)
+#define pgd_val(x) ((x).pgd)
+#define pgprot_val(x) ((x).pgprot)
+
+#define __pte(x) ((pte_t) { (x) })
+#define __pgd(x) ((pgd_t) { (x) })
+#define __pgprot(x) ((pgprot_t) { (x) })
+
+#define pte_pgprot(x) __pgprot(pte_val(x))
+
+#else /* !STRICT_MM_TYPECHECKS */
+
+#ifdef CONFIG_ARC_HAS_PAE40
+typedef unsigned long long pte_t;
+#else
+typedef unsigned long pte_t;
+#endif
+typedef unsigned long pgd_t;
+typedef unsigned long pgprot_t;
+
+#define pte_val(x) (x)
+#define pgd_val(x) (x)
+#define pgprot_val(x) (x)
+#define __pte(x) (x)
+#define __pgd(x) (x)
+#define __pgprot(x) (x)
+#define pte_pgprot(x) (x)
+
+#endif
+
+typedef pte_t * pgtable_t;
+
+/*
+ * Use virt_to_pfn with caution:
+ * If used in pte or paddr related macros, it could cause truncation
+ * in PAE40 builds
+ * As a rule of thumb, only use it in helpers starting with virt_
+ * You have been warned !
+ */
+#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
+
+#define ARCH_PFN_OFFSET virt_to_pfn(CONFIG_LINUX_RAM_BASE)
+
+#ifdef CONFIG_FLATMEM
+#define pfn_valid(pfn) (((pfn) - ARCH_PFN_OFFSET) < max_mapnr)
+#endif
+
+/*
+ * __pa, __va, virt_to_page (ALERT: deprecated, don't use them)
+ *
+ * These macros have historically been misnamed
+ * virt here means link-address/program-address as embedded in object code.
+ * And for ARC, link-addr = physical address
+ */
+#define __pa(vaddr) ((unsigned long)(vaddr))
+#define __va(paddr) ((void *)((unsigned long)(paddr)))
+
+#define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr))
+#define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr))
+
+/* Default Permissions for stack/heaps pages (Non Executable) */
+#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#define WANT_PAGE_VIRTUAL 1
+
+#include <asm-generic/memory_model.h> /* page_to_pfn, pfn_to_page */
+#include <asm-generic/getorder.h>
+
+#endif /* !__ASSEMBLY__ */
+
+#endif