diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2008-08-17 21:05:42 -0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-10-23 01:55:20 -0400 |
| commit | bb8985586b7a906e116db835c64773b7a7d51663 (patch) | |
| tree | de93ae58e88cc563d95cc124a73f3930594c6100 /arch/x86/include/asm/system_64.h | |
| parent | 8ede0bdb63305d3353efd97e9af6210afb05734e (diff) | |
x86, um: ... and asm-x86 move
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
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 000000000000..5aedb8bffc5a --- /dev/null +++ b/arch/x86/include/asm/system_64.h | |||
| @@ -0,0 +1,22 @@ | |||
| 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 | |||
| 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 /* ASM_X86__SYSTEM_64_H */ | ||