diff --git a/arch/x86/include/asm/bigsmp/apicdef.h b/arch/x86/include/asm/bigsmp/apicdef.h
index 6e58781..e58dee8 100644
--- a/arch/x86/include/asm/bigsmp/apicdef.h
+++ b/arch/x86/include/asm/bigsmp/apicdef.h
@@ -1,8 +1,6 @@
 #ifndef __ASM_MACH_APICDEF_H
 #define __ASM_MACH_APICDEF_H
 
-#define		BIGSMP_APIC_ID_MASK		(0xFF<<24)
-
 static inline unsigned bigsmp_get_apic_id(unsigned long x)
 {
 	return (x >> 24) & 0xFF;
diff --git a/arch/x86/include/asm/es7000/apicdef.h b/arch/x86/include/asm/es7000/apicdef.h
index 476da0c..c74881a 100644
--- a/arch/x86/include/asm/es7000/apicdef.h
+++ b/arch/x86/include/asm/es7000/apicdef.h
@@ -1,8 +1,6 @@
 #ifndef __ASM_ES7000_APICDEF_H
 #define __ASM_ES7000_APICDEF_H
 
-#define		ES7000_APIC_ID_MASK		(0xFF<<24)
-
 static inline unsigned int es7000_get_apic_id(unsigned long x)
 {
 	return (x >> 24) & 0xFF;
diff --git a/arch/x86/include/asm/mach-default/mach_apicdef.h b/arch/x86/include/asm/mach-default/mach_apicdef.h
index 8318d12..5141085 100644
--- a/arch/x86/include/asm/mach-default/mach_apicdef.h
+++ b/arch/x86/include/asm/mach-default/mach_apicdef.h
@@ -6,7 +6,6 @@
 #ifdef CONFIG_X86_64
 #define	SET_APIC_ID(x)		(apic->set_apic_id(x))
 #else
-#define		DEFAULT_APIC_ID_MASK	(0x0F<<24)
 
 static inline unsigned default_get_apic_id(unsigned long x) 
 {
diff --git a/arch/x86/include/asm/numaq/apicdef.h b/arch/x86/include/asm/numaq/apicdef.h
index 6f2cc5d..cd927d5 100644
--- a/arch/x86/include/asm/numaq/apicdef.h
+++ b/arch/x86/include/asm/numaq/apicdef.h
@@ -1,8 +1,6 @@
 #ifndef __ASM_NUMAQ_APICDEF_H
 #define __ASM_NUMAQ_APICDEF_H
 
-#define NUMAQ_APIC_ID_MASK (0xF<<24)
-
 static inline unsigned int numaq_get_apic_id(unsigned long x)
 {
 	return (x >> 24) & 0x0F;
diff --git a/arch/x86/include/asm/summit/apicdef.h b/arch/x86/include/asm/summit/apicdef.h
index 0373f0c..c24b0df 100644
--- a/arch/x86/include/asm/summit/apicdef.h
+++ b/arch/x86/include/asm/summit/apicdef.h
@@ -1,8 +1,6 @@
 #ifndef __ASM_SUMMIT_APICDEF_H
 #define __ASM_SUMMIT_APICDEF_H
 
-#define		SUMMIT_APIC_ID_MASK		(0xFF<<24)
-
 static inline unsigned summit_get_apic_id(unsigned long x)
 {
 	return (x >> 24) & 0xFF;
diff --git a/arch/x86/mach-generic/bigsmp.c b/arch/x86/mach-generic/bigsmp.c
index 1f4ad4f..ee52c59 100644
--- a/arch/x86/mach-generic/bigsmp.c
+++ b/arch/x86/mach-generic/bigsmp.c
@@ -92,7 +92,7 @@
 
 	.get_apic_id			= bigsmp_get_apic_id,
 	.set_apic_id			= NULL,
-	.apic_id_mask			= BIGSMP_APIC_ID_MASK,
+	.apic_id_mask			= 0xFF << 24,
 
 	.cpu_mask_to_apicid		= cpu_mask_to_apicid,
 	.cpu_mask_to_apicid_and		= cpu_mask_to_apicid_and,
diff --git a/arch/x86/mach-generic/default.c b/arch/x86/mach-generic/default.c
index 239af25..e4ed7e6 100644
--- a/arch/x86/mach-generic/default.c
+++ b/arch/x86/mach-generic/default.c
@@ -73,7 +73,7 @@
 
 	.get_apic_id			= default_get_apic_id,
 	.set_apic_id			= NULL,
-	.apic_id_mask			= DEFAULT_APIC_ID_MASK,
+	.apic_id_mask			= 0x0F << 24,
 
 	.cpu_mask_to_apicid		= cpu_mask_to_apicid,
 	.cpu_mask_to_apicid_and		= cpu_mask_to_apicid_and,
diff --git a/arch/x86/mach-generic/es7000.c b/arch/x86/mach-generic/es7000.c
index 21fb33e..3d046de 100644
--- a/arch/x86/mach-generic/es7000.c
+++ b/arch/x86/mach-generic/es7000.c
@@ -128,7 +128,7 @@
 
 	.get_apic_id			= es7000_get_apic_id,
 	.set_apic_id			= NULL,
-	.apic_id_mask			= ES7000_APIC_ID_MASK,
+	.apic_id_mask			= 0xFF << 24,
 
 	.cpu_mask_to_apicid		= cpu_mask_to_apicid,
 	.cpu_mask_to_apicid_and		= cpu_mask_to_apicid_and,
diff --git a/arch/x86/mach-generic/numaq.c b/arch/x86/mach-generic/numaq.c
index 27d2d1f..a7bf1aa 100644
--- a/arch/x86/mach-generic/numaq.c
+++ b/arch/x86/mach-generic/numaq.c
@@ -92,7 +92,7 @@
 
 	.get_apic_id			= numaq_get_apic_id,
 	.set_apic_id			= NULL,
-	.apic_id_mask			= NUMAQ_APIC_ID_MASK,
+	.apic_id_mask			= 0x0F << 24,
 
 	.cpu_mask_to_apicid		= cpu_mask_to_apicid,
 	.cpu_mask_to_apicid_and		= cpu_mask_to_apicid_and,
diff --git a/arch/x86/mach-generic/summit.c b/arch/x86/mach-generic/summit.c
index f24cba1..a0ae6b9 100644
--- a/arch/x86/mach-generic/summit.c
+++ b/arch/x86/mach-generic/summit.c
@@ -72,7 +72,7 @@
 
 	.get_apic_id			= summit_get_apic_id,
 	.set_apic_id			= NULL,
-	.apic_id_mask			= SUMMIT_APIC_ID_MASK,
+	.apic_id_mask			= 0xFF << 24,
 
 	.cpu_mask_to_apicid		= cpu_mask_to_apicid,
 	.cpu_mask_to_apicid_and		= cpu_mask_to_apicid_and,