Hi Vincent,

Are you still working on this series? I was expecting an update.

-- Steve


On Wed, 11 Sep 2024 10:30:16 +0100
Vincent Donnefort [off-list ref] wrote:

The growing set of features supported by the hypervisor in protected
mode necessitates debugging and profiling tools. Tracefs is the
ideal candidate for this task:

  * It is simple to use and to script.

  * It is supported by various tools, from the trace-cmd CLI to the
    Android web-based perfetto.

  * The ring-buffer, where are stored trace events consists of linked
    pages, making it an ideal structure for sharing between kernel and
    hypervisor.

This series introduces a method to create events and to generate them
from the hypervisor (hyp_enter/hyp_exit given as an example) as well as
a Tracefs user-space interface to read them.

A presentation was given on this matter during the tracing summit in
2022. [1]