#define PERF_CONTEXT_GUEST_USER   (-2560)
#define PERF_CONTEXT_GUEST_KERNEL (-2176)
#define PERF_CONTEXT_GUEST        (-2048)
#define PERF_CONTEXT_USER         (-512)
#define PERF_CONTEXT_KERNEL       (-128)
#define PERF_CONTEXT_HV           (-32)