KVM_MAX_NR_GP_COUNTERS
struct kvm_pmc gp_counters[KVM_MAX_NR_GP_COUNTERS];
MSR_ARCH_PERFMON_PERFCTR0 + KVM_MAX_NR_GP_COUNTERS - 1:
MSR_ARCH_PERFMON_EVENTSEL0 + KVM_MAX_NR_GP_COUNTERS - 1: