This bug is awaiting verification that the linux-nvidia-
tegra/6.8.0-1001.1 kernel in -proposed solves the problem. Please test
the kernel and update this bug with the results. If the problem is
solved, change the tag 'verification-needed-noble-linux-nvidia-tegra' to
'verification-done-noble-linux-nvidia-tegra'. If the problem still
exists, change the tag 'verification-needed-noble-linux-nvidia-tegra' to
'verification-failed-noble-linux-nvidia-tegra'.


If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.


See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-noble-linux-nvidia-tegra-v2 
verification-needed-noble-linux-nvidia-tegra

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https://bugs.launchpad.net/bugs/2056126

Title:
  hwmon: (coretemp) Fix core count limitation

Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Noble:
  Fix Released

Bug description:
  [Impact]

  In linux 6.8 the coretemp driver supports at most 128 cores per
  package. Cores higher than 128 will lose their core temperature
  information.

  There is an upstream patch set that allows to support more than 128
  cores per package, but it's applied to linux-next for now and it's
  scheduled for 6.9.

  We should apply the patch set to the Noble 6.8 kernel, so that we can
  properly support systems with a large amount of cores per package.

  [Test case]

  Read temperature info from /sys/class/hwmon on a system with > 128
  cores per package (that means we don't have a proper test case to
  verify the fix at the moment).

  [Fix]

  Apply the following commits (from linux-next):

  18cb15e9c108 hwmon: (coretemp) Use dynamic allocated memory for core temp_data
  f0a5f46b0100 hwmon: (coretemp) Remove redundant temp_data->is_pkg_data
  16a29729c00c hwmon: (coretemp) Split package temp_data and core temp_data
  b48fddda2b30 hwmon: (coretemp) Abstract core_temp helpers
  a30f3dc6e9bf hwmon: (coretemp) Remove redundant pdata->cpu_map[]
  e416450cb080 hwmon: (coretemp) Replace sensor_device_attribute with 
device_attribute
  46ee134971bb hwmon: (coretemp) Remove unnecessary dependency of array index
  9f360b22929c hwmon: (coretemp) Introduce enum for attr index

  [Regression potential]

  We may experience hwmon-related regressions, either systems reading
  incorrect temperature information or even bugs/crashes when accessing
  data from /sys/class/hwmon.

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