[RFC PATCH 01/12] PAT 64b: Add cpu_shutdown() support

[venkatesh.pallipadi@intel.com]

Doesn't do anything yet.
  
Based on a earlier patch by Eric Biederman and Andi Kleen.

Simple forward port of cpu-shutdown.patch to x86 tree.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
---

Index: linux-2.6/arch/x86/kernel/reboot_64.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/reboot_64.c	2007-12-11 03:30:35.000000000 -0800
+++ linux-2.6/arch/x86/kernel/reboot_64.c	2007-12-11 03:30:46.000000000 -0800
@@ -113,6 +113,7 @@
 #endif
 
 	disable_IO_APIC();
+	cpu_shutdown();
 
 #ifdef CONFIG_HPET_TIMER
 	hpet_disable();
Index: linux-2.6/arch/x86/kernel/setup64.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/setup64.c	2007-12-11 03:30:35.000000000 -0800
+++ linux-2.6/arch/x86/kernel/setup64.c	2007-12-11 03:30:46.000000000 -0800
@@ -293,3 +293,7 @@
 
 	raw_local_save_flags(kernel_eflags);
 }
+
+void cpu_shutdown(void)
+{
+}
Index: linux-2.6/include/asm-x86/processor_64.h
===================================================================
--- linux-2.6.orig/include/asm-x86/processor_64.h	2007-12-11 03:30:35.000000000 -0800
+++ linux-2.6/include/asm-x86/processor_64.h	2007-12-11 03:30:46.000000000 -0800
@@ -100,6 +100,7 @@
 extern char ignore_irq13;
 
 extern void identify_cpu(struct cpuinfo_x86 *);
+extern void cpu_shutdown(void);
 extern void print_cpu_info(struct cpuinfo_x86 *);
 extern void init_scattered_cpuid_features(struct cpuinfo_x86 *c);
 extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c);
Index: linux-2.6/arch/x86/kernel/smp_64.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/smp_64.c	2007-10-25 02:45:41.000000000 -0700
+++ linux-2.6/arch/x86/kernel/smp_64.c	2007-12-11 03:36:31.000000000 -0800
@@ -471,6 +471,7 @@
 	 */
 	cpu_clear(smp_processor_id(), cpu_online_map);
 	disable_local_APIC();
+	cpu_shutdown();
 	for (;;) 
 		halt();
 } 

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