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------- Comment From TMRICHT@xxxxxxxxxx 2025-07-22 02:19 EDT-------
I must have done something wrong. I removed the 3 packages with

# apt remove --purge s390-tools s390-tools-data s390-tools-signed
The following packages were automatically installed and are no longer required:
libnl-genl-3-200  libutempter0
Use 'apt autoremove' to remove them.

REMOVING:
s390-tools*  s390-tools-data*  s390-tools-signed*  ubuntu-server*  ubuntu-server-minimal*

Summary:
Upgrading: 0, Installing: 0, Removing: 5, Not Upgrading: 2
Freed space: 28.8 MB

Continue? [Y/n] y
(Reading database ... 69788 files and directories currently installed.)
Removing ubuntu-server-minimal (1.549) ...
Removing ubuntu-server (1.549) ...
Removing s390-tools (2.37.0-0ubuntu2.1) ...
Removing s390-tools-data (2.37.0-0ubuntu2.1) ...
Removing s390-tools-signed (2.37.0-0ubuntu2.1) ...
Processing triggers for man-db (2.13.0-1) ...
Processing triggers for initramfs-tools (0.147ubuntu1.1) ...
update-initramfs: Generating /boot/initrd.img-6.14.0-24-generic
I: The initramfs will attempt to resume from /dev/dasdb1
I: (UUID=ac46fc0e-1131-49cd-bbaf-f54cf834d016)
I: Set the RESUME variable to override this.
(Reading database ... 69488 files and directories currently installed.)
Purging configuration files for s390-tools (2.37.0-0ubuntu2.1) ...
#

Then I downloaded the new packages for plucky from the URL provided in
the previous comment and tried to install them:

root@b83lp65:~/xxx# apt install -f *.deb
Error: Unable to locate package s390-tools_2.37.0-0ubuntu2.1_s390x.deb
Error: Unable to locate package s390-tools-data_2.37.0-0ubuntu2.1_all.deb
Error: Unable to locate package s390-tools-signed_2.37.0-0ubuntu2.1_all.deb
root@b83lp65:~/xxx#

I used my web browser to download these packages to my Thinkpad and
copied them to the target machine. I do not understand why it does not
recognize the local files:

# ll
total 5328
drwxr-xr-x 2 root root    4096 Jul 22 06:05 ./
drwx------ 6 root root    4096 Jul 22 05:57 ../
-rw-r--r-- 1 root root 5406088 Jul 22 05:53 s390-tools_2.37.0-0ubuntu2.1_s390x.deb
-rw-r--r-- 1 root root   20548 Jul 22 05:53 s390-tools-data_2.37.0-0ubuntu2.1_all.deb
-rw-r--r-- 1 root root   12456 Jul 22 06:05 s390-tools-signed_2.37.0-0ubuntu2.1_all.deb
# file *
s390-tools_2.37.0-0ubuntu2.1_s390x.deb:      Debian binary package (format 2.0), with control.tar.zst, data compression zst
s390-tools-data_2.37.0-0ubuntu2.1_all.deb:   Debian binary package (format 2.0), with control.tar.zst, data compression zst
s390-tools-signed_2.37.0-0ubuntu2.1_all.deb: Debian binary package (format 2.0), with control.tar.zst, data compression zst
#

Is there a difference between wget and my browser download? (I am not
familiar with wget.... too many options).

Thanks for your help

------- Comment From TMRICHT@xxxxxxxxxx 2025-07-22 02:21 EDT-------
> b3db52fd165e6a26d9c73e51bd5322b55017ef94 ("libutil: Add machine type definitionfor machines 9175 and 9176")
> but also:
> 120ad30f1ee9e0aff21cacb07570f1acc9e0c61b ("cpumf/lscpumf: Add support for IBM z17 counter sets")
> needed?

> Can you confirm that these two are all the commits that are needed?

Yes these 2 are needed. And that is sufficient.

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https://bugs.launchpad.net/bugs/2103414

Title:
  [25.04 FEAT] [post announcement] [KRN2304] CPU-MF Counters for new IBM
  Z hardware - s390-tools part

Status in Ubuntu on IBM z Systems:
  In Progress
Status in s390-tools package in Ubuntu:
  Fix Released
Status in s390-tools-signed package in Ubuntu:
  Fix Released
Status in s390-tools source package in Noble:
  Fix Committed
Status in s390-tools-signed source package in Noble:
  Fix Committed
Status in s390-tools source package in Plucky:
  Fix Committed
Status in s390-tools-signed source package in Plucky:
  Fix Committed
Status in s390-tools source package in Questing:
  Fix Released
Status in s390-tools-signed source package in Questing:
  Fix Released

Bug description:
  [ Impact ]

   * A new IBM Z hardware generation (z17) was recently introduced.

   * Hence s390-tools' libutil needs to be aware of the new hardware
     name (z17, z17_2) and it's new type(s) (9175, 9176) to be able
     to identify and map type to name and vice versa.

   * This is especially needed to map new CPU management facility (MF)
     hardware counters to the correct hardware name and type.

   * Without patching, new z17 hw, i.e. if referenced in CPU MF
     (or other cases) by it's new machine type, would be reported
     by libutils as "Unknown machine type".

  [ Test Plan ]

   * Prepare an IBM z17 LPAR with Ubuntu 25.04
     (incl. this s390-tools patch and the commit above for the kernel).

   * At LPARs activation profile, navigate to the Security page
     and within the counter facility options, select each counter set
     you want to use. (One may just select all for testing purposes.)

   * Use 'perf list' to determine if the new counters are listed.
     (Cmd 'ls -l /sys/devices/cpum_cf/events | wc -l' needs to report 106 on z17.)

   * For comparing the new counters (and their names) see:
     dc7cafd91cba ("s390/cpumf: Update CPU Measurement facility extended
     counter set support")
     https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/\
     plucky/commit/?h=master-next&id=dc7cafd91cba63b200f33ced7530b1d76a2b5495

   * Use 'perf stat -e <counter>' to enable and make use of these
  counters.

   * In addition to the more end to end test above,
     a proper machine identification can be done using
     the lscpumf tool (that uses lbutils):

     - libutils is a static library (.a) used by lscpumf.
       If 'lscpumf -C' is used to list all counters that are provided
       by the underlying IBM Z hardware generation, it will list the
       identified hardware in the first row
       (mapped from its type number, obtained from /proc/sysinfo
       'Type:' field):

    - $ lscpumf -C | head -1
        perf event counter list for IBM z17

    - The complete output of 'lscpumf -C' should then contain all
      the new counters that are now available for the new hardware
      generation (see above kernel commit dc7cafd91cba).

  [ Fix ]

   * b3db52fd165e6a26d9c73e51bd5322b55017ef94
     ("libutil: Add machine type definition for machines 9175 and 9176")

   * Nobel misses the type for an intermediate/updated model
     ('Z16_A02' on top of Z16)
     thus I'm adding this first (needed for noble only) as a pre-requirement.
     ef1799f31fa2a11467373077058b8b5a3838c4b1
     ("s390-tools/libutil: Add machine type 3932")

  [ Where problems could occur ]

   * The patch is pretty straight forward, but there can always be problems,
     be it a 'slip of the pen' or a typo, with that:

   * The names or type information could be wrong, which could lead
     to an incorrect identification (or not identification) of a z17 system.

   * The new case statements might not be inserted correctly
     or not correctly closed/terminated,
     which might lead again to an incorrect identification
     or to "Unknown machine type".

   * The above could again lead to:
     - incorrect event exposure on unsupported hardware
     - invalid perf measurements
     - sysfs inconsistencies
     - or warnings due to misconfigured or non-existent counters

   * Only new code is added by this commit - none is changed nor
  removed.

   * These CPU MF counters and their handling is unique to s390x,
     hence no other architectures are be affected.

  [ Other Info ]

   * The CPU MF hw counters themselves are part of the kernel:
     dc7cafd91cba ("s390/cpumf: Update CPU Measurement facility extended
     counter set support") and are handled in kernel SRU LP#2114258.

   * Hence there is no harm to have the support in s390-tools before having
     in the kernel, since in this case the new type info will just not be used.
     In case the kernel has support first and libutils is used,
     libutil will report "Unknown machine type".
  __________

  Feature Description:

  Support for CPU-MF counters of new IBM Z hardware in kernel,
  s390-tools, perf (kernel) and libpfm4.

  This part covers the s390-tools changes to lscpumf and libutil.

  The related patches / commit IDs will be provided as soon as the
  required information has been publicly disclosed.

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