[PATCH v12 00/30] Tracefs support for pKVM

[Steven Rostedt]

On Thu, 19 Feb 2026 15:02:37 +0000
Vincent Donnefort <vdonnefort at google.com> 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 first introduces a new generic way of creating remote events and
> remote buffers. Then it adds support to the pKVM hypervisor.
> 

So I finished my review of all the tracing patches, but I just realized
that there's likely going to be some major conflicts with changes in the
tracing tree that's going to happen against this series.

To solve that, after -rc2 comes out, I'll apply the tracing portion of this
series to a branch in my tree directly on top of -rc2 and I will then use
that to base my changes for the next merge window.

Then the arm/kvm folks could start with that branch and add the arm/KVM
portion of this series on top of it. This will prevent major merge
conflicts in linux-next.

Does that sound OK?

-- Steve