Verified this populates cpu cache info for MTL platform:
$ ls /sys/devices/system/cpu/cpu0/cache/
index0 index1 index2 index3 uevent
** Changed in: linux (Ubuntu Noble)
Status: New => In Progress
** Changed in: linux (Ubuntu Noble)
Importance: Undecided => High
** Changed in: linux (Ubuntu Noble)
Assignee: (unassigned) => You-Sheng Yang (vicamo)
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https://bugs.launchpad.net/bugs/2049793
Title:
[MTL] x86: Fix Cache info sysfs is not populated
Status in intel:
New
Status in linux package in Ubuntu:
In Progress
Status in linux source package in Noble:
In Progress
Bug description:
[Description]
The interface /sys/devices/system/cpu/cpu*/cache is empty. In Meteorlake,
not all CPUs have the same number of subleaves in the CPUID 4 leaf. The compute
die CPUs have 3 subleaves whereas the CPUs in the SoC die have 2. This problem
happens because Linux assumes that all CPUs have the same number of subleaves.
[Hardware Information]
Architecture:
Intel / AMD (x86_64)
Platform(s):
Meteor Lake
Date HW is expected at Canonical:
Component(s):
x86
[Software Information]
Target Version:
24.04
Target Kernel:
6.8
Commit IDs:
TBD
External Links:
https://lore.kernel.org/all/[email protected]/
[Business Justification]
[Testing guidance]
[External ID]
LFE-6901
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