Index: /trunk/ccl/lisp-kernel/area.h
===================================================================
--- /trunk/ccl/lisp-kernel/area.h	(revision 5169)
+++ /trunk/ccl/lisp-kernel/area.h	(revision 5170)
@@ -170,5 +170,10 @@
 #endif
 
+#ifdef X8664
+#define PURESPACE_RESERVE 0x40000000 /* 1GB */
+#else
 #define PURESPACE_RESERVE 0x04000000 /* 64MB */
+#endif
+
 #define STATIC_RESERVE heap_segment_size
 #define STATIC_BASE_ADDRESS 0x00001000