Azure: Add support for multi-MSI

[Tim Gardner]

SRU Justification

[Impact]

The Hyper-V vPCI driver (pci-hyperv) doesn't work with a PCIe devcie that supports multiple MSI interrupts (Note: MSI-X has been working fine). Recently Jeffrey Hugo <email address hidden> made 4 patches to the vPCI driver so multiple-MSI can work now. Please consider picking up the 4 patches into the linux-azure kernels for Ubuntu LTS 18.04, 20.04 and 22.04:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=08e61e861a0e47e5e1a3fb78406afd6b0cea6b6d

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=455880dfe292a2bdd3b4ad6a107299fce610e64b

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b4b77778ecc5bfbd4e77de1b2fd5c1dd3c655f1f

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a2bad844a67b1c7740bda63e87453baf63c3a7f7

Microsoft is working to bring up a Qualcomm PCIe device to Linux VMs running on Azure. We need the 4 patches for the device to work on Azure/Hyper-V.

[Test Plan]

Microsoft tested

[Where things could go wrong]

MSI vectors could be mis-wired or ignored.

[Other Info]

SF: #00339521

[Tim Gardner (timg-tpi)]

Patches submitted: https://lists.ubuntu.com/archives/kernel-team/2022-July/131864.html

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

This bug is awaiting verification that the linux-azure/5.4.0-1087.92 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 Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-azure/5.15.0-1015.18 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!

[Tim Gardner (timg-tpi)]

VT: Microsoft tested

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-azure - 5.15.0-1017.20

---------------
linux-azure (5.15.0-1017.20) jammy; urgency=medium

  [ Ubuntu: 5.15.0-46.49 ]

  * CVE-2022-2585
    - SAUCE: posix-cpu-timers: Cleanup CPU timers before freeing them during exec
  * CVE-2022-2586
    - SAUCE: netfilter: nf_tables: do not allow SET_ID to refer to another table
    - SAUCE: netfilter: nf_tables: do not allow CHAIN_ID to refer to another table
    - SAUCE: netfilter: nf_tables: do not allow RULE_ID to refer to another chain
  * CVE-2022-2588
    - SAUCE: net_sched: cls_route: remove from list when handle is 0

linux-azure (5.15.0-1016.19) jammy; urgency=medium

  * jammy/linux-azure: 5.15.0-1016.19 -proposed tracker (LP: #1982619)

  * Azure: multi-MSI patches break fio tests on NVMe (LP: #1982613)
    - Revert "PCI: hv: Fix interrupt mapping for multi-MSI"
    - Revert "PCI: hv: Reuse existing IRTE allocation in compose_msi_msg()"
    - Revert "PCI: hv: Fix hv_arch_irq_unmask() for multi-MSI"
    - Revert "PCI: hv: Remove unused hv_set_msi_entry_from_desc()"
    - Revert "PCI: hv: Avoid the retarget interrupt hypercall in irq_unmask() on
      ARM64"
    - Revert "PCI: hv: Fix multi-MSI to allow more than one MSI vector"
    - Revert "genirq/msi, treewide: Use a named struct for PCI/MSI attributes"
    - Revert "PCI/MSI: Remove msi_desc_to_pci_sysdata()"
    - Revert "PCI/MSI: Make pci_msi_domain_write_msg() static"
    - Revert "genirq/msi: Fixup includes"
    - Revert "genirq/msi: Remove unused domain callbacks"
    - Revert "genirq/msi: Guard sysfs code"

linux-azure (5.15.0-1015.18) jammy; urgency=medium

  * jammy/linux-azure: 5.15.0-1015.18 -proposed tracker (LP: #1982272)

  * Azure: Add support for multi-MSI (LP: #1981577)
    - genirq/msi: Guard sysfs code
    - genirq/msi: Remove unused domain callbacks
    - genirq/msi: Fixup includes
    - PCI/MSI: Make pci_msi_domain_write_msg() static
    - PCI/MSI: Remove msi_desc_to_pci_sysdata()
    - genirq/msi, treewide: Use a named struct for PCI/MSI attributes
    - PCI: hv: Fix multi-MSI to allow more than one MSI vector
    - PCI: hv: Avoid the retarget interrupt hypercall in irq_unmask() on ARM64
    - PCI: hv: Remove unused hv_set_msi_entry_from_desc()
    - PCI: hv: Fix hv_arch_irq_unmask() for multi-MSI
    - PCI: hv: Reuse existing IRTE allocation in compose_msi_msg()
    - PCI: hv: Fix interrupt mapping for multi-MSI

  * AMD ACP 6.x DMIC Supports (LP: #1949245)
    - [Config] azure: Disable AMD ACP 6 DMIC Support

  * Ubuntu 22.04 and 20.04 DPC Fixes for Failure Cases of DownPort Containment
    events (LP: #1965241)
    - [Config] azure: Enable config option CONFIG_PCIE_EDR

  * CVE-2022-29900 // CVE-2022-29901
    - [Config]: azure: Enable speculation mitigations

  * Packaging resync (LP: #1786013)
    - debian/dkms-versions -- update from kernel-versions (main/2022.07.11)

  [ Ubuntu: 5.15.0-45.48 ]

  * CVE-2022-29900 // CVE-2022-29901
    - x86/lib/atomic64_386_32: Rename things
    - x86: Prepare asm files for straight-line-speculation
    - x86: Prepare inline-asm for straight-line-speculation
    - x86/alternative: Relax text_poke_bp() constraint
    - kbuild: move objtool_ar...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-azure - 5.4.0-1089.94

---------------
linux-azure (5.4.0-1089.94) focal; urgency=medium

  [ Ubuntu: 5.4.0-124.140 ]

  * CVE-2022-2586
    - SAUCE: netfilter: nf_tables: do not allow SET_ID to refer to another table
    - SAUCE: netfilter: nf_tables: do not allow RULE_ID to refer to another chain
  * CVE-2022-2588
    - SAUCE: net_sched: cls_route: remove from list when handle is 0
  * CVE-2022-34918
    - netfilter: nf_tables: stricter validation of element data

linux-azure (5.4.0-1088.93) focal; urgency=medium

  * focal/linux-azure: 5.4.0-1088.93 -proposed tracker (LP: #1982614)

  * Azure: multi-MSI patches break fio tests on NVMe (LP: #1982613)
    - Revert "PCI: hv: Fix interrupt mapping for multi-MSI"
    - Revert "PCI: hv: Reuse existing IRTE allocation in compose_msi_msg()"
    - Revert "PCI: hv: Fix hv_arch_irq_unmask() for multi-MSI"
    - Revert "PCI: hv: Fix multi-MSI to allow more than one MSI vector"

linux-azure (5.4.0-1087.92) focal; urgency=medium

  * focal/linux-azure: 5.4.0-1087.92 -proposed tracker (LP: #1981257)

  * Azure: Add support for multi-MSI (LP: #1981577)
    - PCI: hv: Fix multi-MSI to allow more than one MSI vector
    - PCI: hv: Fix hv_arch_irq_unmask() for multi-MSI
    - PCI: hv: Reuse existing IRTE allocation in compose_msi_msg()
    - PCI: hv: Fix interrupt mapping for multi-MSI

  [ Ubuntu: 5.4.0-123.139 ]

  * focal/linux: 5.4.0-123.139 -proposed tracker (LP: #1981284)
  * Packaging resync (LP: #1786013)
    - debian/dkms-versions -- update from kernel-versions (main/2022.07.11)
  * Hairpin traffic does not work with centralized NAT gw (LP: #1967856)
    - net: openvswitch: fix misuse of the cached connection on tuple changes
  * [UBUNTU 20.04] Include patches to avoid self-detected stall with Secure
    Execution (LP: #1979296)
    - KVM: s390: pv: add macros for UVC CC values
    - KVM: s390: pv: avoid stalls when making pages secure
    - KVM: s390: pv: avoid stalls for kvm_s390_pv_init_vm
  * Focal update: v5.4.195 upstream stable release (LP: #1980407)
    - batman-adv: Don't skb_split skbuffs with frag_list
    - hwmon: (tmp401) Add OF device ID table
    - mac80211: Reset MBSSID parameters upon connection
    - net: Fix features skip in for_each_netdev_feature()
    - ipv4: drop dst in multicast routing path
    - drm/nouveau: Fix a potential theorical leak in nouveau_get_backlight_name()
    - netlink: do not reset transport header in netlink_recvmsg()
    - mac80211_hwsim: call ieee80211_tx_prepare_skb under RCU protection
    - dim: initialize all struct fields
    - hwmon: (ltq-cputemp) restrict it to SOC_XWAY
    - s390/ctcm: fix variable dereferenced before check
    - s390/ctcm: fix potential memory leak
    - s390/lcs: fix variable dereferenced before check
    - net/sched: act_pedit: really ensure the skb is writable
    - net/smc: non blocking recvmsg() return -EAGAIN when no data and
      signal_pending
    - net: sfc: ef10: fix memory leak in efx_ef10_mtd_probe()
    - gfs2: Fix filesystem block deallocation for short writes
    - hwmon: (f71882fg) Fix negative temperature
    - ASoC: max98090: Reject invalid values in custom control put()
...