1 files changed, 20 insertions, 0 deletions

diff --git a/arch/ia64/include/asm/ustack.h b/arch/ia64/include/asm/ustack.h
new file mode 100644
index 000000000000..504167c35b8b
--- /dev/null
+++ b/arch/ia64/include/asm/ustack.h
@@ -0,0 +1,20 @@
+#ifndef _ASM_IA64_USTACK_H
+#define _ASM_IA64_USTACK_H
+
+/*
+ * Constants for the user stack size
+ */
+
+#ifdef __KERNEL__
+#include <asm/page.h>
+
+/* The absolute hard limit for stack size is 1/2 of the mappable space in the region */
+#define MAX_USER_STACK_SIZE     (RGN_MAP_LIMIT/2)
+#define STACK_TOP               (0x6000000000000000UL + RGN_MAP_LIMIT)
+#define STACK_TOP_MAX           STACK_TOP
+#endif
+
+/* Make a default stack size of 2GiB */
+#define DEFAULT_USER_STACK_SIZE (1UL << 31)
+
+#endif /* _ASM_IA64_USTACK_H */