On Mon, 09 Feb 2026 22:13:55 +0000,
Colton Lewis <[email protected]> wrote:
>
> This series creates a new PMU scheme on ARM, a partitioned PMU that
> allows reserving a subset of counters for more direct guest access,
> significantly reducing overhead. More details, including performance
> benchmarks, can be read in the v1 cover letter linked below.
>
> An overview of what this series accomplishes was presented at KVM
> Forum 2025. Slides [1] and video [2] are linked below.
>
> IMPORTANT: This iteration does not yet implement the dynamic counter
> reservation approach suggested by Will Deacon in January [3]. I am
> working on it, but wanted to send this version first to keep momentum
> going and ensure I've addressed all issues besides that.
[...]
As I have asked before, this is missing an example of how userspace is
going to use this. Without it, it is impossible to correctly review
this series.
Please consider this as a blocker.
Thanks,
M.
--
Without deviation from the norm, progress is not possible.
