CONFIG_VPA_PMU: VPA PMU events

General informations

The Linux kernel configuration item CONFIG_VPA_PMU:

• prompt: VPA PMU events
• type: tristate
• depends on: CONFIG_KVM_BOOK3S_64_HV && CONFIG_HV_PERF_CTRS
• defined in arch/powerpc/platforms/pseries/Kconfig
• found in Linux kernels: 6.13-rc+HEAD
• modules built: vpa-pmu

Help text

Enable access to the VPA PMU counters via perf. This enables code that support measurement for KVM on PowerVM(KoP) feature. PAPR hypervisor has introduced three new counters in the VPA area of LPAR CPUs for KVM L2 guest observability. Two for context switches from host to guest and vice versa, and one counter for getting the total time spent inside the KVM guest. This config enables code that access these software counters via perf.

If unsure, Select N.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb module vpa-pmu CONFIG_VPA_PMU : arch/powerpc/platforms/pseries/Kconfig : "VPA PMU events" # in 6.13-rc+HEAD

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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