x64, x2apic/intr-remap: introduce read_apic_id() to genapic routines

Move the read_apic_id()  to genapic routines.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: akpm@linux-foundation.org
Cc: arjan@linux.intel.com
Cc: andi@firstfloor.org
Cc: ebiederm@xmission.com
Cc: jbarnes@virtuousgeek.org
Cc: steiner@sgi.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/mach-default/mach_apic.h b/include/asm-x86/mach-default/mach_apic.h
index 0b2cde5..d172c55 100644
--- a/include/asm-x86/mach-default/mach_apic.h
+++ b/include/asm-x86/mach-default/mach_apic.h
@@ -30,6 +30,7 @@
 #define cpu_mask_to_apicid (genapic->cpu_mask_to_apicid)
 #define phys_pkg_id	(genapic->phys_pkg_id)
 #define vector_allocation_domain    (genapic->vector_allocation_domain)
+#define read_apic_id  (genapic->read_apic_id)
 extern void setup_apic_routing(void);
 #else
 #define INT_DELIVERY_MODE dest_LowestPrio
diff --git a/include/asm-x86/mach-default/mach_apicdef.h b/include/asm-x86/mach-default/mach_apicdef.h
index e4b29ba..453b58a 100644
--- a/include/asm-x86/mach-default/mach_apicdef.h
+++ b/include/asm-x86/mach-default/mach_apicdef.h
@@ -5,8 +5,9 @@
 
 #ifdef CONFIG_X86_64
 #define	APIC_ID_MASK		(0xFFu<<24)
-#define GET_APIC_ID(x)          (((x)>>24)&0xFFu)
+#define GET_APIC_ID(x)          (x)
 #define	SET_APIC_ID(x)		(((x)<<24))
+#define GET_XAPIC_ID(x)		(((x) >> 24) & 0xFFu)
 #else
 #define		APIC_ID_MASK		(0xF<<24)
 static inline unsigned get_apic_id(unsigned long x)