linux/arch/x86/include/asm/system_64.h
H. Peter Anvin 1965aae3c9 x86: Fix ASM_X86__ header guards
Change header guards named "ASM_X86__*" to "_ASM_X86_*" since:

a. the double underscore is ugly and pointless.
b. no leading underscore violates namespace constraints.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2008-10-22 22:55:23 -07:00

22 lines
409 B
C

#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 */