RE: [PATCH v6 12/19] xen/cpufreq: implement amd-cppc driver for CPPC in passive mode

enproject.org > Subject: Re: [PATCH v6 12/19] xen/cpufreq: implement amd-cppc driver for CPPC > in passive mode > > On 11.07.2025 05:50, Penny Zheng wrote: > > --- a/xen/arch/x86/acpi/cpufreq/amd-cppc.c > > +++ b/xen/arch/x86/acpi/cpufreq/amd-cppc.c > > +if ( res

Re: [PATCH v6 12/19] xen/cpufreq: implement amd-cppc driver for CPPC in passive mode

On 11.07.2025 05:50, Penny Zheng wrote: > --- a/xen/arch/x86/acpi/cpufreq/amd-cppc.c > +++ b/xen/arch/x86/acpi/cpufreq/amd-cppc.c > @@ -14,7 +14,95 @@ > #include > #include > #include > +#include > +#include > #include > +#include > +#include > + > +#define amd_cppc_err(cpu, fmt, args..

[PATCH v6 12/19] xen/cpufreq: implement amd-cppc driver for CPPC in passive mode

amd-cppc is the AMD CPU performance scaling driver that introduces a new CPU frequency control mechanism. The new mechanism is based on Collaborative Processor Performance Control (CPPC) which is a finer grain frequency management than legacy ACPI hardware P-States. Current AMD CPU platforms are us