[PATCH] Raise MAX_MP_BUSSES to 256 on SMP boxes

[James Cleverdon]

Testing a NUMA box some pretty extreme PCI-X expansion capability overflowed 
mp_bus_id_to_pci_bus[].  May as well raise MAX_MP_BUSSES to the max:

--- linux-2.4.16/include/asm-i386/mpspec.h	Thu Nov 22 11:46:18 2001
+++ kdb-2.4.16/include/asm-i386/mpspec.h	Fri Dec  7 15:37:08 2001
@@ -184,13 +185,14 @@
  *	7	2 CPU MCA+PCI
  */
 
-#ifdef CONFIG_MULTIQUAD
-#define MAX_IRQ_SOURCES 512
-#else /* !CONFIG_MULTIQUAD */
+#ifdef CONFIG_SMP
+#define MAX_MP_BUSSES 256	/* Need max PCI busses for hotplug. */
+#define MAX_IRQ_SOURCES 1024	/* Four intrs per PCI slot. */
+#else /* !CONFIG_SMP */
+#define MAX_MP_BUSSES 32
 #define MAX_IRQ_SOURCES 256
-#endif /* CONFIG_MULTIQUAD */
+#endif /* CONFIG_SMP */
 
-#define MAX_MP_BUSSES 32
 enum mp_bustype {
 	MP_BUS_ISA = 1,
 	MP_BUS_EISA,

-- 
James Cleverdon, IBM xSeries Platform (NUMA), Beaverton
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