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[Xen-devel] [PATCHv5 0/4] trace: improve hypercall tracing

xenalyze requires some patches to decode the new trace record format,
these patches will be posted shortly.

Changes since v4:
- Rename trace_hypercall() to __trace_hypercall_entry().
- Use an array for the arguments to include in the hypercall trace

Changes since v3:
- Trace arguments for a few more hypercalls (vcpu_op and sched_op).

Changes since v2:
- Changed all PV events to use a different subclass.
- Put multicall subcalls into their own subclass (so they can be
  filtered out).
- Use 12 bits to report which arguments are present in the
  PV_HYPERCALL_V2 trace record.


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