x86: put paravirt stubs into common asm/pgalloc.h

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/asm-x86/pgalloc.h b/include/asm-x86/pgalloc.h
index ea9d27a..2877359 100644
--- a/include/asm-x86/pgalloc.h
+++ b/include/asm-x86/pgalloc.h
@@ -5,6 +5,16 @@
 #include <linux/mm.h>		/* for struct page */
 #include <linux/pagemap.h>
 
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else
+#define paravirt_alloc_pt(mm, pfn) do { } while (0)
+#define paravirt_alloc_pd(mm, pfn) do { } while (0)
+#define paravirt_alloc_pd_clone(pfn, clonepfn, start, count) do { } while (0)
+#define paravirt_release_pt(pfn) do { } while (0)
+#define paravirt_release_pd(pfn) do { } while (0)
+#endif
+
 /*
  * Allocate and free page tables.
  */