1 files changed, 13 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/shmparam.h b/arch/ia64/include/asm/shmparam.h
new file mode 100644
index 000000000..43bd8324a
--- /dev/null
+++ b/arch/ia64/include/asm/shmparam.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_IA64_SHMPARAM_H
+#define _ASM_IA64_SHMPARAM_H
+
+/*
+ * SHMLBA controls minimum alignment at which shared memory segments
+ * get attached.  The IA-64 architecture says that there may be a
+ * performance degradation when there are virtual aliases within 1MB.
+ * To reduce the chance of this, we set SHMLBA to 1MB. --davidm 00/12/20
+ */
+#define	SHMLBA	(1024*1024)
+
+#endif /* _ASM_IA64_SHMPARAM_H */