Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / ia64 / include / asm / shmparam.h

diff --git a/kernel/arch/ia64/include/asm/shmparam.h b/kernel/arch/ia64/include/asm/shmparam.h
new file mode 100644 (file)
index 0000000..d07508d
--- /dev/null
+++ b/kernel/arch/ia64/include/asm/shmparam.h
@@ -0,0 +1,12 @@
+#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 */