ACK: [SRU][N/P][PATCH v2 0/1] [25.04 FEAT] [post announcement] [KRN2304] CPU-MF Counters for new IBM Z hardware - perf part (LP: #2103415)

[Kuba Pawlak]

On 9/8/25 12:06, Massimiliano Pellizzer wrote:
> BugLink: https://bugs.launchpad.net/bugs/2103415
>
> [ Impact ]
>
> perf list: Add IBM z17 event descriptions
>
> Update IBM z17 counter description using document SA23-2260-08:
> "The Load-Program-Parameter and the CPU-Measurement Facilities"
> released in May 2025 to include counter definitions for IBM z17
> counter sets:
> * Basic counter set
> * Problem/user counter set
> * Crypto counter set.
>
> Use document SA23-2261-09:
> "The CPU-Measurement Facility Extended Counters Definition
>   for z10, z196/z114, zEC12/zBC12, z13/z13s, z14, z15, z16 and z17"
> released on April 2025 to include counter definitions for IBM z17
> * Extended counter set
> * MT-Diagnostic counter set.
>
> Use document SA22-7832-14:
> "z/Architecture Principles of Operation."
> released in April 2025 to include counter definitions for IBM z17
> * PAI-Crypto counter set
> * PAI-Extention counter set.
>
> Use document
> "CPU MF Formulas and Updates April 2025"
> released in April 2025 to include metric calculations.
>
> [ Fix ]
>
> Backport the following upstream commit to Noble and Plucky:
> - 508b228942b2 perf list: Add IBM z17 event descriptions
>
> [ Test Plan ]
>
> Boot a z17 instance and verify that z17-specific events appear in perf list:
> $ perf list
>
> [ Regression Potential ]
>
> The regression potential of this patch is very low,
> since it only adds IBM z17-specific perf event descriptions
> without touching core perf or kernel logic.
> Any issues would be limited to inaccurate or
> unsupported counters on z17 systems,
> with no impact on other architectures.
>
> [ Changes between v1 and v2 ]
>
> Jammy patchset dropped since it has been rejected during SRU review.
>
>
Acked-by: Kuba Pawlak <kuba.pawlak at canonical.com>
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