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| author |   Dirk Brandewie <dirk.j.brandewie@intel.com> | 2014-11-06 09:40:46 -0800 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-11-12 00:04:37 +0100 |
| commit | 77873887729aaddec5cd27203a6ce8c4987733e4 (patch) | |
| tree | 85d104df9e3b6417d52a7801c55b0cdd4a579f80 /Documentation/cpu-freq | |
| parent | cpufreq: respect the min/max settings from user space (diff) | |
| download | linux-dev-77873887729aaddec5cd27203a6ce8c4987733e4.tar.xz linux-dev-77873887729aaddec5cd27203a6ce8c4987733e4.zip | |
x86: Add support for Intel HWP feature detection.
Add support of Hardware Managed Performance States (HWP) described in Volume 3
section 14.4 of the SDM.
One bit CPUID.06H:EAX[bit 7] expresses the presence of the HWP feature on
the processor. The remaining bits CPUID.06H:EAX[bit 8-11] denote the
presense of various HWP features.
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation/cpu-freq')
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