x86: add PUD_PAGE_SIZE
a PUD entry covers 1GB of virtual memory.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/asm-x86/page_64.h b/include/asm-x86/page_64.h
index c1ac42d..dcf0c07 100644
--- a/include/asm-x86/page_64.h
+++ b/include/asm-x86/page_64.h
@@ -23,6 +23,9 @@
#define MCE_STACK 5
#define N_EXCEPTION_STACKS 5 /* hw limit: 7 */
+#define PUD_PAGE_SIZE (_AC(1, UL) << PUD_SHIFT)
+#define PUD_PAGE_MASK (~(PUD_PAGE_SIZE-1))
+
#define __PAGE_OFFSET _AC(0xffff810000000000, UL)
#define __PHYSICAL_START CONFIG_PHYSICAL_START