include/asm-x86/system_64.h

   1 #ifndef __ASM_SYSTEM_H
   2 #define __ASM_SYSTEM_H
   3
   4 #include <asm/segment.h>
   5 #include <asm/cmpxchg.h>
   6
   7
   8 static inline unsigned long read_cr8(void)
   9 {
  10         unsigned long cr8;
  11         asm volatile("movq %%cr8,%0" : "=r" (cr8));
  12         return cr8;
  13 }
  14
  15 static 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