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Support for IA32_ENERGY_PERF_BIAS MSR - v2

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  1. v1 Latest2 patches 3 repliesIn review

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#Subject and filesSizeRepliesApplied
1/2x86: Look for IA32_ENERGY_PERF_BIAS support - v2arch/x86/include/asm/cpufeature.h arch/x86/include/asm/msr-index.h arch/x86/kernel/cpu/addon_cpuid_features.c+4 -02 replies
2/2x86: Manage ENERGY_PERF_BIAS based on cpufreq governor - v2Documentation/kernel-parameters.txt arch/x86/kernel/cpu/cpufreq/Kconfig arch/x86/kernel/cpu/cpufreq/Makefile +1 more+203 -03 replies

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Cover letter [patch 0/2] Support for IA32_ENERGY_PERF_BIAS MSR - v2

There is a new hardware feature, which lets system software to set Energy Performance Preference. This is a opaque knob in the form of IA32_ENERGY_PERF_BIAS MSR, which has a 4 bit Energy Performance Preference Hint.

The support for this feature is indicated by CPUID.06H.ECX.bit3. Refer to Intel Architectures Software Developer's Manual for more info.

Signed-off-by Venkatesh Pallipadi <[email protected]>

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Modification from first version - Revised kernel parameter documentation.

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