1#ifndef _ASM_X86_SYSTEM_64_H 2#define _ASM_X86_SYSTEM_64_H 3 4#include <asm/segment.h> 5#include <asm/cmpxchg.h> 6 7 8static inline unsigned long read_cr8(void) 9{ 10 unsigned long cr8; 11 asm volatile("movq %%cr8,%0" : "=r" (cr8)); 12 return cr8; 13} 14 15static inline void write_cr8(unsigned long val) 16{ 17 asm volatile("movq %0,%%cr8" :: "r" (val) : "memory"); 18} 19 20#include <linux/irqflags.h> 21 22#endif /* _ASM_X86_SYSTEM_64_H */ 23