[PATCH 1/2] powerpc/perf: Add mtmmcr0(FC) after ppc_set_pmu_inuse(1)

pmu_inuse flag is part of lppaca struct which notifies the hypervisor whether guest/partition is using PMUs. This provides a hint incase of save/restore of PMU registers. And in power_pmu_enable(), linux sets the pmu_inuse flag and then updates the PMU registers. Current sequence in power_pmu_enabl

[PATCH 1/2] powerpc/perf: Add mtmmcr0(FC) after ppc_set_pmu_inuse(1)

pmu_inuse flag is part of lppaca struct which notifies the hypervisor whether guest/partition is using PMUs. This provides a hint incase of save/restore of PMU registers. And in power_pmu_enable(), linux sets the pmu_inuse flag and then updates the PMU registers. Current sequence in power_pmu_enabl