Revert PPC get_user workaround

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 1976248

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 bug is awaiting verification that the linux/5.15.0-41.44 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' to 'verification-done-jammy'. If the problem still exists, change the tag 'verification-needed-jammy' to 'verification-failed-jammy'.

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!

Enabled jammy-updates, jammy-proposed, kinetic, kinetic-proposed, on a power9 instance.

Attempted to install zfs-dkms from kinetic-proposed, as it now checks and requires for mmu_feature_keys to be exported on powerpc.

installed 5.15.0-40-generic abi to observe the issue:

checking whether __copy_from_user_inatomic is available... no
configure: error:
 *** The `__copy_from_user_inatomic()` Linux kernel function is
 *** incompatible with the CDDL license and will prevent the module
 *** linking stage from succeeding. OpenZFS cannot be compiled.

...
Error! Bad return status for module build on kernel: 5.15.0-40-generic (ppc64le)
Consult /var/lib/dkms/zfs/2.1.4/build/make.log for more information.

Then went to upgrade to 5.15.0-41-generic abi:

...
checking whether __copy_from_user_inatomic is available... yes
...

zfs.ko:
Running module version sanity check.
 - Original module
 - Installation
   - Installing to /lib/modules/5.15.0-41-generic/updates/dkms/

$ sudo dkms status
zfs/2.1.4, 5.15.0-41-generic, ppc64le: installed

Rebooted:

$ uname -r
5.15.0-41-generic

$ cat /sys/module/zfs/version
2.1.4-0ubuntu2

All is good, and zfs is working, lxd is working.

Kernel in jammy verified.

This bug was fixed in the package linux - 5.15.0-41.44

---------------
linux (5.15.0-41.44) jammy; urgency=medium

  * jammy/linux: 5.15.0-41.44 -proposed tracker (LP: #1979448)

  * Fix can't boot up after change to vmd (LP: #1976587)
    - PCI: vmd: Assign VMD IRQ domain before enumeration
    - PCI: vmd: Revert 2565e5b69c44 ("PCI: vmd: Do not disable MSI-X remapping if
      interrupt remapping is enabled by IOMMU.")

  * [SRU][Jammy/OEM-5.17][PATCH 0/1] Fix calltrace in mac80211 (LP: #1978297)
    - mac80211: fix struct ieee80211_tx_info size

  * [SRU][Jammy][PATCH 0/1] Fix amd display corruption on s2idle resume
    (LP: #1978244)
    - drm/amd/display: Don't reinitialize DMCUB on s0ix resume

  * pl2303 serial adapter not recognized (LP: #1967493)
    - USB: serial: pl2303: fix type detection for odd device

  * Remove SAUCE patches from test_vxlan_under_vrf.sh in net of
    ubuntu_kernel_selftests (LP: #1975691)
    - Revert "UBUNTU: SAUCE: selftests: net: Don't fail test_vxlan_under_vrf on
      xfail"
    - Revert "UBUNTU: SAUCE: selftests: net: Make test for VXLAN underlay in non-
      default VRF an expected failure"

  * Fix hp_wmi_read_int() reporting error (0x05) (LP: #1979051)
    - platform/x86: hp-wmi: Fix hp_wmi_read_int() reporting error (0x05)

  * Request to back port vmci patches to Ubuntu kernel (LP: #1978145)
    - VMCI: dma dg: whitespace formatting change for vmci register defines
    - VMCI: dma dg: add MMIO access to registers
    - VMCI: dma dg: detect DMA datagram capability
    - VMCI: dma dg: set OS page size
    - VMCI: dma dg: register dummy IRQ handlers for DMA datagrams
    - VMCI: dma dg: allocate send and receive buffers for DMA datagrams
    - VMCI: dma dg: add support for DMA datagrams sends
    - VMCI: dma dg: add support for DMA datagrams receive
    - VMCI: Fix some error handling paths in vmci_guest_probe_device()
    - VMCI: Release notification_bitmap in error path
    - VMCI: Check exclusive_vectors when freeing interrupt 1
    - VMCI: Add support for ARM64
    - [Config] Update policies for VMWARE_VMCI and VMWARE_VMCI_VSOCKETS

  * [UBUNTU 20.04] rcu stalls with many storage key guests (LP: #1975582)
    - s390/gmap: voluntarily schedule during key setting
    - s390/mm: use non-quiescing sske for KVM switch to keyed guest

  * [SRU][OEM-5.14/OEM-5.17/Jammy][PATCH 0/1] Fix i915 calltrace on new ADL BIOS
    (LP: #1976214)
    - drm/i915: update new TMDS clock setting defined by VBT

  * Revert PPC get_user workaround (LP: #1976248)
    - powerpc: Export mmu_feature_keys[] as non-GPL

  * Jammy update: v5.15.39 upstream stable release (LP: #1978240)
    - MIPS: Fix CP0 counter erratum detection for R4k CPUs
    - parisc: Merge model and model name into one line in /proc/cpuinfo
    - ALSA: hda/realtek: Add quirk for Yoga Duet 7 13ITL6 speakers
    - ALSA: fireworks: fix wrong return count shorter than expected by 4 bytes
    - mmc: sdhci-msm: Reset GCC_SDCC_BCR register for SDHC
    - mmc: sunxi-mmc: Fix DMA descriptors allocated above 32 bits
    - mmc: core: Set HS clock speed before sending HS CMD13
    - gpiolib: of: fix bounds check for 'gpio-reserved-ranges'
    - x86/fpu: Prevent FPU s...

This bug is awaiting verification that the linux-gkeop-5.15/5.15.0-1003.5~20.04.2 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-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!

Ubuntu 22.10 (Kinetic Kudu) has reached end of life, so this bug will not be fixed for that specific release.