Re: [Qemu-devel] [PATCH v2 6/6] trace: use -1 instead of TRACE_VCPU_EVENT_COUNT as magic value

[Lluís Vilanova]

Daniel P Berrange writes:

> The TraceEvent struct vcpu_id field uses the constant
> TRACE_VCPU_EVENT_COUNT as a magic value to indicate this
> is not a per-VCPU event. The max count value will be
> different for each event group though, so this is no
> longer suitable. Instead use the value (size_t)-1 which
> is guaranteed to be available across all event groups.

The tracetool script should assert used vcpu IDs never reach ~0. Also, this
patch is better sent with your actual event group patches (see comments on patch
5).

Cheers,
  Lluis