diff --git a/include/asm-x86/mpspec_def.h b/include/asm-x86/mpspec_def.h
index 13bafb1..3504617 100644
--- a/include/asm-x86/mpspec_def.h
+++ b/include/asm-x86/mpspec_def.h
@@ -8,52 +8,68 @@
 
 /*
  * This tag identifies where the SMP configuration
- * information is. 
+ * information is.
  */
- 
+
 #define SMP_MAGIC_IDENT	(('_'<<24)|('P'<<16)|('M'<<8)|'_')
 
-#define MAX_MPC_ENTRY 1024
-#define MAX_APICS      256
+#ifdef CONFIG_X86_32
+# define MAX_MPC_ENTRY 1024
+# define MAX_APICS      256
+#else
+/*
+ * A maximum of 255 APICs with the current APIC ID architecture.
+ */
+# define MAX_APICS 255
+#endif
 
 struct intel_mp_floating
 {
-	char mpf_signature[4];		/* "_MP_" 			*/
-	unsigned long mpf_physptr;	/* Configuration table address	*/
+	char mpf_signature[4];		/* "_MP_"			*/
+	unsigned int mpf_physptr;	/* Configuration table address	*/
 	unsigned char mpf_length;	/* Our length (paragraphs)	*/
 	unsigned char mpf_specification;/* Specification version	*/
 	unsigned char mpf_checksum;	/* Checksum (makes sum 0)	*/
-	unsigned char mpf_feature1;	/* Standard or configuration ? 	*/
+	unsigned char mpf_feature1;	/* Standard or configuration ?	*/
 	unsigned char mpf_feature2;	/* Bit7 set for IMCR|PIC	*/
 	unsigned char mpf_feature3;	/* Unused (0)			*/
 	unsigned char mpf_feature4;	/* Unused (0)			*/
 	unsigned char mpf_feature5;	/* Unused (0)			*/
 };
 
+#define MPC_SIGNATURE "PCMP"
+
 struct mp_config_table
 {
 	char mpc_signature[4];
-#define MPC_SIGNATURE "PCMP"
 	unsigned short mpc_length;	/* Size of table */
 	char  mpc_spec;			/* 0x01 */
 	char  mpc_checksum;
 	char  mpc_oem[8];
 	char  mpc_productid[12];
-	unsigned long mpc_oemptr;	/* 0 if not present */
+	unsigned int mpc_oemptr;	/* 0 if not present */
 	unsigned short mpc_oemsize;	/* 0 if not present */
 	unsigned short mpc_oemcount;
-	unsigned long mpc_lapic;	/* APIC address */
-	unsigned long reserved;
+	unsigned int mpc_lapic;	/* APIC address */
+	unsigned int reserved;
 };
 
 /* Followed by entries */
 
-#define	MP_PROCESSOR	0
-#define	MP_BUS		1
-#define	MP_IOAPIC	2
-#define	MP_INTSRC	3
-#define	MP_LINTSRC	4
-#define	MP_TRANSLATION  192  /* Used by IBM NUMA-Q to describe node locality */
+#define	MP_PROCESSOR		0
+#define	MP_BUS			1
+#define	MP_IOAPIC		2
+#define	MP_INTSRC		3
+#define	MP_LINTSRC		4
+/* Used by IBM NUMA-Q to describe node locality */
+#define	MP_TRANSLATION		192
+
+#define CPU_ENABLED		1	/* Processor is available */
+#define CPU_BOOTPROCESSOR	2	/* Processor is the BP */
+
+#define CPU_STEPPING_MASK	0x000F
+#define CPU_MODEL_MASK		0x00F0
+#define CPU_FAMILY_MASK		0x0F00
 
 struct mpc_config_processor
 {
@@ -61,14 +77,9 @@
 	unsigned char mpc_apicid;	/* Local APIC number */
 	unsigned char mpc_apicver;	/* Its versions */
 	unsigned char mpc_cpuflag;
-#define CPU_ENABLED		1	/* Processor is available */
-#define CPU_BOOTPROCESSOR	2	/* Processor is the BP */
-	unsigned long mpc_cpufeature;		
-#define CPU_STEPPING_MASK 0x0F
-#define CPU_MODEL_MASK	0xF0
-#define CPU_FAMILY_MASK	0xF00
-	unsigned long mpc_featureflag;	/* CPUID feature value */
-	unsigned long mpc_reserved[2];
+	unsigned int mpc_cpufeature;
+	unsigned int mpc_featureflag;	/* CPUID feature value */
+	unsigned int mpc_reserved[2];
 };
 
 struct mpc_config_bus
@@ -98,14 +109,15 @@
 #define BUSTYPE_VME	"VME"
 #define BUSTYPE_XPRESS	"XPRESS"
 
+#define MPC_APIC_USABLE		0x01
+
 struct mpc_config_ioapic
 {
 	unsigned char mpc_type;
 	unsigned char mpc_apicid;
 	unsigned char mpc_apicver;
 	unsigned char mpc_flags;
-#define MPC_APIC_USABLE		0x01
-	unsigned long mpc_apicaddr;
+	unsigned int mpc_apicaddr;
 };
 
 struct mpc_config_intsrc
@@ -130,6 +142,7 @@
 #define MP_IRQDIR_HIGH		1
 #define MP_IRQDIR_LOW		3
 
+#define MP_APIC_ALL	0xFF
 
 struct mpc_config_lintsrc
 {
@@ -138,15 +151,15 @@
 	unsigned short mpc_irqflag;
 	unsigned char mpc_srcbusid;
 	unsigned char mpc_srcbusirq;
-	unsigned char mpc_destapic;	
-#define MP_APIC_ALL	0xFF
+	unsigned char mpc_destapic;
 	unsigned char mpc_destapiclint;
 };
 
+#define MPC_OEM_SIGNATURE "_OEM"
+
 struct mp_config_oemtable
 {
 	char oem_signature[4];
-#define MPC_OEM_SIGNATURE "_OEM"
 	unsigned short oem_length;	/* Size of table */
 	char  oem_rev;			/* 0x01 */
 	char  oem_checksum;
@@ -155,13 +168,13 @@
 
 struct mpc_config_translation
 {
-        unsigned char mpc_type;
-        unsigned char trans_len;
-        unsigned char trans_type;
-        unsigned char trans_quad;
-        unsigned char trans_global;
-        unsigned char trans_local;
-        unsigned short trans_reserved;
+	unsigned char mpc_type;
+	unsigned char trans_len;
+	unsigned char trans_type;
+	unsigned char trans_quad;
+	unsigned char trans_global;
+	unsigned char trans_local;
+	unsigned short trans_reserved;
 };
 
 /*