[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
This bug is awaiting verification that the linux-lowlatency- hwe-6.8/6.8.0-38.38.1~22.04.2 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-jammy-linux- lowlatency-hwe-6.8' to 'verification-done-jammy-linux-lowlatency- hwe-6.8'. If the problem still exists, change the tag 'verification- needed-jammy-linux-lowlatency-hwe-6.8' to 'verification-failed-jammy- linux-lowlatency-hwe-6.8'. 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-jammy-linux-lowlatency-hwe-6.8-v2 verification-needed-jammy-linux-lowlatency-hwe-6.8 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
This bug is awaiting verification that the linux-oracle/6.8.0-1006.6 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-oracle' to 'verification-done- noble-linux-oracle'. If the problem still exists, change the tag 'verification-needed-noble-linux-oracle' to 'verification-failed-noble- linux-oracle'. 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-oracle-v2 verification-needed-noble-linux-oracle -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
This bug is awaiting verification that the linux- lowlatency/6.8.0-35.35.1 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-lowlatency' to 'verification-done-noble-linux-lowlatency'. If the problem still exists, change the tag 'verification-needed-noble-linux-lowlatency' to 'verification-failed-noble-linux-lowlatency'. 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-lowlatency-v2 verification-needed-noble-linux-lowlatency -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
This bug is awaiting verification that the linux- nvidia-6.8/6.8.0-1006.6~22.04.2 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-jammy-linux- nvidia-6.8' to 'verification-done-jammy-linux-nvidia-6.8'. If the problem still exists, change the tag 'verification-needed-jammy-linux- nvidia-6.8' to 'verification-failed-jammy-linux-nvidia-6.8'. 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-jammy-linux-nvidia-6.8-v2 verification-needed-jammy-linux-nvidia-6.8 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
This bug is awaiting verification that the linux-ibm/6.8.0-1006.6 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-ibm' to 'verification-done-noble-linux- ibm'. If the problem still exists, change the tag 'verification-needed- noble-linux-ibm' to 'verification-failed-noble-linux-ibm'. 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-ibm-v2 verification-needed-noble-linux-ibm -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
This bug is awaiting verification that the linux-raspi- realtime/6.8.0-2004.4 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-raspi-realtime' to 'verification-done-noble-linux-raspi-realtime'. If the problem still exists, change the tag 'verification-needed-noble-linux-raspi-realtime' to 'verification-failed-noble-linux-raspi-realtime'. 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-raspi-realtime-v2 verification-needed-noble-linux-raspi-realtime -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
This bug is awaiting verification that the linux-aws/6.8.0-1009.9 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-aws' to 'verification-done-noble-linux- aws'. If the problem still exists, change the tag 'verification-needed- noble-linux-aws' to 'verification-failed-noble-linux-aws'. 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-aws-v2 verification-needed-noble-linux-aws -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
This bug is awaiting verification that the linux-gcp/6.8.0-1008.9 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-gcp' to 'verification-done-noble-linux- gcp'. If the problem still exists, change the tag 'verification-needed- noble-linux-gcp' to 'verification-failed-noble-linux-gcp'. 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-gcp-v2 verification-needed-noble-linux-gcp -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
This bug is awaiting verification that the linux-gke/6.8.0-1004.7 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-gke' to 'verification-done-noble-linux- gke'. If the problem still exists, change the tag 'verification-needed- noble-linux-gke' to 'verification-failed-noble-linux-gke'. 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-gke-v2 verification-needed-noble-linux-gke -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
This bug is awaiting verification that the linux-azure/6.8.0-1008.8 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-azure' to 'verification-done-noble- linux-azure'. If the problem still exists, change the tag 'verification- needed-noble-linux-azure' to 'verification-failed-noble-linux-azure'. 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-azure-v2 verification-needed-noble-linux-azure -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
https://git.launchpad.net/~ubuntu- kernel/ubuntu/+source/linux/+git/noble/commit/?id=95dc0f6212b9eb8769fb40b2359a0a61cfac8494 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
This bug was fixed in the package linux - 6.8.0-28.28 --- linux (6.8.0-28.28) noble; urgency=medium * noble/linux: 6.8.0-28.28 -proposed tracker (LP: #2061867) * linux-gcp 6.8.0-1005.5 (+ others) Noble kernel regression iwth new apparmor profiles/features (LP: #2061851) - SAUCE: apparmor4.0.0 [92/90]: fix address mapping for recvfrom -- Paolo Pisati Tue, 16 Apr 2024 18:29:17 +0200 ** Changed in: linux (Ubuntu Noble) Status: In Progress => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
SRU: * https://lists.ubuntu.com/archives/kernel-team/2024-March/149332.html (noble) * https://kernel.ubuntu.com/gitea/kernel/noble-linux-unstable/src/branch/vicamo/bug-2049793-mtl-sysfs-cacheinfo (unstable, to create pull request once branch sync is done) ** Description changed: + [SRU Justification] + + [Impact] + + The interface /sys/devices/system/cpu/cpuX/cache is broken (not populated) if + CPUs have different numbers of subleaves in CPUID 4. This is the case of Intel + Meteor Lake. + + [Fix] + + https://lore.kernel.org/all/2023121519.12834-1-ricardo.neri-calde...@linux.intel.com/ + Reviewed, but probably will only land in v6.9. + + [Test Case] + + Check existence of cpu cache info: + + $ ls /sys/devices/system/cpu/cpu0/cache/ + index0 index1 index2 index3 uevent + + [Where problems could occur] + + This populates sysfs entries that should have been available, not + something new or alters existing interface. + + [Other Info] + + While this is targets v6.8 for Intel LPMD (Low Power Model Daemon)'s + use, only Noble and Unstable will be nominated for fix. + + == original bug report == + [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. + 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 + 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/2023121519.12834-5-ricardo.neri-calde...@linux.intel.com/ + Target Version: + 24.04 + Target Kernel: + 6.8 + Commit IDs: + TBD + External Links: + https://lore.kernel.org/all/2023121519.12834-5-ricardo.neri-calde...@linux.intel.com/ [Business Justification] - [Testing guidance] - [External ID] - LFE-6901 + LFE-6901 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
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) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 2049793] Re: [MTL] x86: Fix Cache info sysfs is not populated
** Also affects: linux (Ubuntu Noble) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2049793 Title: [MTL] x86: Fix Cache info sysfs is not populated To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/2049793/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
