| commit | 707fa8ed923b1b6a3d7af0d386b0b3abad28ed19 | [log] [tgz] |
|---|---|---|
| author | Andi Kleen <ak@suse.de> | Wed Jan 30 13:32:37 2008 +0100 |
| committer | Ingo Molnar <mingo@elte.hu> | Wed Jan 30 13:32:37 2008 +0100 |
| tree | 181c7fe62e4c392486a06380df4da870bfaa40bf | |
| parent | de4218634e3df6d73a3e6cdfdf3a17fa3bc7e013 [diff] |
x86: Implement support to synchronize RDTSC with LFENCE on Intel CPUs According to Intel RDTSC can be always synchronized with LFENCE on all current CPUs. Implement the necessary CPUID bit for that. It is unclear yet if that is true for all future CPUs too, but if there's another way the kernel can be always updated. Cc: asit.k.mallick@intel.com Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>