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AMD Pstate Driver Fixes and Improvements
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Hello everyone, This patchset addresses critical issues and enhances performance settings for CPUs with heterogeneous core types in the AMD pstate driver. Specifically, it resolves problems related to calculating the highest performance and frequency on the latest CPUs with preferred cores. Additionally, the patchset includes documentation improvements in amd-pstate.rst, offering a comprehensive guide covering topics such as recommended reboot requirements during driver switching, debugging procedures for driver loading failures. Your feedback and suggestions for improvement are highly appreciated. Please review the patches and provide your valuable input. Thank you. Best regards, Perry. Perry Yuan (11): cpufreq: amd-pstate: optimiza the initial frequency values verification cpufreq: amd-pstate: show CPPC debug message if CPPC is not supported cpufreq: amd-pstate: add debug message while CPPC is supported and disabled by SBIOS Documentation: PM: amd-pstate: introducing recommended reboot requirement during driver switch Documentation: PM: amd-pstate: add debugging section for driver loading failure Documentation: PM: amd-pstate: add guide mode to the Operation mode cpufreq: amd-pstate: switch boot_cpu_has() to cpu_feature_enabled() x86/cpufeatures: Add feature bits for AMD heterogeneous processor cpufreq: amd-pstate: implement heterogeneous core topology for highest performance initialization cpufreq: amd-pstate: fix the highest frequency issue which limit performance cpufreq: amd-pstate: automatically load pstate driver by default Documentation/admin-guide/pm/amd-pstate.rst | 19 +- arch/x86/include/asm/cpufeatures.h | 1 + arch/x86/include/asm/processor.h | 2 + arch/x86/kernel/cpu/amd.c | 19 ++ arch/x86/kernel/cpu/scattered.c | 1 + drivers/cpufreq/amd-pstate.c | 196 ++++++++++++++------ include/linux/amd-pstate.h | 8 + 7 files changed, 185 insertions(+), 61 deletions(-)