Azure: RMB Patch to backport on the Azure Linux Images

[Tim Gardner]

SRU Justification

[Impact]

MANA driver is not conforming to the HW specification in one small instance.

This request from Azure LSG team to backport the rmb patch to be backported in all the azure images. (https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git/commit/drivers/net/ethernet/microsoft/mana?id=6fd2c68da55c552f86e401ebe40c4a619025ef69)

Jammy and Kinetic will get this patch via stable updates.

[Test Case]

Microsoft tested

[Where things could go wrong]

At worst there might be a small performance impact.

[Other Info]

SF: #00346991

[Tim Gardner (timg-tpi)]

https://lists.ubuntu.com/archives/kernel-team/2022-October/134336.html

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-azure/5.4.0-1100.106 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!

[Tim Gardner (timg-tpi)]

Microsoft tested and accepted. Marking verification-done-focal

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-azure - 5.4.0-1100.106

---------------
linux-azure (5.4.0-1100.106) focal; urgency=medium

  * focal/linux-azure: 5.4.0-1100.106 -proposed tracker (LP: #1999429)

  * ubuntu_bpf failed to build on F-azure-5.4 / B-azure-5.4 ( error:
    ‘bpf_object_open_opts’ undeclared) (LP: #1990794)
    - Revert "bpf, testing: Add selftest to read/write sockaddr from user space"

  * Focal update: v5.4.214 upstream stable release (LP: #1993196)
    - [Config] azure: soc: fsl: select FSL_GUTS driver for DPIO

  * Azure: hv_netvsc: Fix race between VF offering and VF association message
    from host (LP: #1994974)
    - hv_netvsc: Fix race between VF offering and VF association message from host

  * Azure: RMB Patch to backport on the Azure Linux Images (LP: #1994987)
    - net: mana: Add rmb after checking owner bits

  [ Ubuntu: 5.4.0-136.153 ]

  * focal/linux: 5.4.0-136.153 -proposed tracker (LP: #1997835)
  * Expose built-in trusted and revoked certificates (LP: #1996892)
    - [Packaging] Expose built-in trusted and revoked certificates
  * [UBUNTU 20.04] KVM: PV: ext call delivered twice when receiver in PSW wait
    (LP: #1995941)
    - KVM: s390: pv: don't present the ecall interrupt twice
  * [UBUNTU 20.04] boot: Add s390x secure boot trailer (LP: #1996071)
    - s390/boot: add secure boot trailer
  * Fix rfkill causing soft blocked wifi (LP: #1996198)
    - platform/x86: hp_wmi: Fix rfkill causing soft blocked wifi
  * md: Replace snprintf with scnprintf (LP: #1993315)
    - md: Replace snprintf with scnprintf
  * input/keyboard: the keyboard on some Asus laptops can't work (LP: #1992266)
    - ACPI: resource: Skip IRQ override on Asus Vivobook K3402ZA/K3502ZA
    - ACPI: resource: Add ASUS model S5402ZA to quirks
  * Focal update: v5.4.218 upstream stable release (LP: #1995530)
    - mm: pagewalk: Fix race between unmap and page walker
    - perf tools: Fixup get_current_dir_name() compilation
    - firmware: arm_scmi: Add SCMI PM driver remove routine
    - dmaengine: xilinx_dma: cleanup for fetching xlnx,num-fstores property
    - dmaengine: xilinx_dma: Report error in case of dma_set_mask_and_coherent API
      failure
    - ARM: dts: fix Moxa SDIO 'compatible', remove 'sdhci' misnomer
    - scsi: qedf: Fix a UAF bug in __qedf_probe()
    - net/ieee802154: fix uninit value bug in dgram_sendmsg
    - um: Cleanup syscall_handler_t cast in syscalls_32.h
    - um: Cleanup compiler warning in arch/x86/um/tls_32.c
    - arch: um: Mark the stack non-executable to fix a binutils warning
    - usb: mon: make mmapped memory read only
    - USB: serial: ftdi_sio: fix 300 bps rate for SIO
    - mmc: core: Replace with already defined values for readability
    - mmc: core: Terminate infinite loop in SD-UHS voltage switch
    - rpmsg: qcom: glink: replace strncpy() with strscpy_pad()
    - nilfs2: fix leak of nilfs_root in case of writer thread creation failure
    - nilfs2: replace WARN_ONs by nilfs_error for checkpoint acquisition failure
    - ceph: don't truncate file in atomic_open
    - random: clamp credited irq bits to maximum mixed
    - ALSA: hda: Fix position reporting on Poulsbo
    - efi: Correct Macmi...