[PATCH] uml-i386: fix build breakage with CONFIG_HIGHMEM
missing helper used by arch/i386/mm/highmem.c, which is pulled
into build on that configuration.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/asm-um/pgtable.h b/include/asm-um/pgtable.h
index 188f726..e57ff13 100644
--- a/include/asm-um/pgtable.h
+++ b/include/asm-um/pgtable.h
@@ -408,6 +408,15 @@
#include <asm-generic/pgtable-nopud.h>
+#ifdef CONFIG_HIGHMEM
+/* Clear a kernel PTE and flush it from the TLB */
+#define kpte_clear_flush(ptep, vaddr) \
+do { \
+ pte_clear(&init_mm, vaddr, ptep); \
+ __flush_tlb_one(vaddr); \
+} while (0)
+#endif
+
#endif
#endif