Enable CONFIG_INTEL_IOMMU_DEFAULT_ON and CONFIG_INTEL_IOMMU_SCALABLE_MODE_DEFAULT_ON

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1951440

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

This causes https://bugs.launchpad.net/bugs/1958004. Still inviting vendor to investigate.

This bug was fixed in the package linux - 5.15.0-17.17

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linux (5.15.0-17.17) jammy; urgency=medium

  * jammy/linux: 5.15.0-17.17 -proposed tracker (LP: #1957809)

 -- Andrea Righi <email address hidden> Thu, 13 Jan 2022 17:11:21 +0100

This bug is awaiting verification that the linux-oracle-5.15/5.15.0-1006.8~20.04.1 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-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

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!

This bug was fixed in the package linux - 6.8.0-20.20

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linux (6.8.0-20.20) noble; urgency=medium

  * noble/linux: 6.8.0-20.20 -proposed tracker (LP: #2058221)

  * Noble update: v6.8.1 upstream stable release (LP: #2058224)
    - x86/mmio: Disable KVM mitigation when X86_FEATURE_CLEAR_CPU_BUF is set
    - Documentation/hw-vuln: Add documentation for RFDS
    - x86/rfds: Mitigate Register File Data Sampling (RFDS)
    - KVM/x86: Export RFDS_NO and RFDS_CLEAR to guests
    - Linux 6.8.1

  * Autopkgtest failures on amd64 (LP: #2048768)
    - [Packaging] update to clang-18

  * Miscellaneous Ubuntu changes
    - SAUCE: apparmor4.0.0: LSM stacking v39: fix build error with
      CONFIG_SECURITY=n
    - [Config] amd64: MITIGATION_RFDS=y

 -- Paolo Pisati <email address hidden> Mon, 18 Mar 2024 11:08:14 +0100