diff options
Diffstat (limited to 'arch/x86/include/asm/system_64.h')
| -rw-r--r-- | arch/x86/include/asm/system_64.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/x86/include/asm/system_64.h b/arch/x86/include/asm/system_64.h new file mode 100644 index 00000000000..1159e091ad0 --- /dev/null +++ b/arch/x86/include/asm/system_64.h @@ -0,0 +1,22 @@ +#ifndef _ASM_X86_SYSTEM_64_H +#define _ASM_X86_SYSTEM_64_H + +#include <asm/segment.h> +#include <asm/cmpxchg.h> + + +static inline unsigned long read_cr8(void) +{ + unsigned long cr8; + asm volatile("movq %%cr8,%0" : "=r" (cr8)); + return cr8; +} + +static inline void write_cr8(unsigned long val) +{ + asm volatile("movq %0,%%cr8" :: "r" (val) : "memory"); +} + +#include <linux/irqflags.h> + +#endif /* _ASM_X86_SYSTEM_64_H */ |