[PATCH] x86_64 - UV fix for memory-only blades

[Jack Steiner <steiner@sgi.com>]

Fix an endcase in handling UV blades that have memory
but no cpus. The calculation of the highest blade number
failed to handle these blades if they appear last in the
configuration.

Signed-off-by: Jack Steiner <steiner@sgi.com>

---
 arch/x86/kernel/apic/x2apic_uv_x.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux/arch/x86/kernel/apic/x2apic_uv_x.c
===================================================================
--- linux.orig/arch/x86/kernel/apic/x2apic_uv_x.c	2009-05-15 12:00:59.000000000 -0500
+++ linux/arch/x86/kernel/apic/x2apic_uv_x.c	2009-05-15 14:38:16.000000000 -0500
@@ -632,6 +632,7 @@ void __init uv_system_init(void)
 		pnode = (paddr >> m_val) & pnode_mask;
 		blade = boot_pnode_to_blade(pnode);
 		uv_node_to_blade[nid] = blade;
+		max_pnode = max(pnode, max_pnode);
 	}
 
 	map_gru_high(max_pnode);