linux-vybrid_public/include/asm-x86/mach-default/mach_apicdef.h

#ifndef __ASM_MACH_APICDEF_H
#define __ASM_MACH_APICDEF_H

#include <asm/apic.h>

#ifdef CONFIG_X86_64
#define	APIC_ID_MASK		(0xFFu<<24)
#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) 
{
	unsigned int ver = GET_APIC_VERSION(apic_read(APIC_LVR));
	if (APIC_XAPIC(ver))
		return (((x)>>24)&0xFF);
	else
		return (((x)>>24)&0xF);
} 

#define		GET_APIC_ID(x)	get_apic_id(x)
#endif

#endif