[patch 2/2] Convert bigsmp to use flat physical mode

[Ashok Raj]

If we are using hotplug enabled kernel, then make bigsmp the default mode.


Signed-off-by: Ashok Raj <ashok.raj@xxxxxxxxx>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@xxxxxxxxx>
-------------------------------------------------------
 arch/i386/kernel/mpparse.c |   13 ++++++++++---
 1 files changed, 10 insertions(+), 3 deletions(-)

Index: linux-2.6.15-rc1-mm2/arch/i386/kernel/mpparse.c
===================================================================
--- linux-2.6.15-rc1-mm2.orig/arch/i386/kernel/mpparse.c
+++ linux-2.6.15-rc1-mm2/arch/i386/kernel/mpparse.c
@@ -38,6 +38,12 @@
 int smp_found_config;
 unsigned int __initdata maxcpus = NR_CPUS;
 
+#ifdef CONFIG_HOTPLUG_CPU
+#define CPU_HOTPLUG_ENABLED	(1)
+#else
+#define CPU_HOTPLUG_ENABLED	(0)
+#endif
+
 /*
  * Various Linux-internal data structures created from the
  * MP-table.
@@ -219,9 +225,10 @@ static void __devinit MP_processor_info 
 	cpu_set(num_processors, cpu_possible_map);
 	num_processors++;
 
-	if ((num_processors > 8) &&
-	    APIC_XAPIC(ver) &&
-	    (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL))
+	if (APIC_XAPIC(ver) &&
+		(CPU_HOTPLUG_ENABLED ||
+		((num_processors > 8) &&
+	    		(boot_cpu_data.x86_vendor == X86_VENDOR_INTEL))))
 		def_to_bigsmp = 1;
 	else
 		def_to_bigsmp = 0;

--

-
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