Move pci-hyperv.ko from linux-modules-extra to support installation to Hyper-V using DDA

[TJ]

Move "pci-hyperv.ko" to the primary kernel image package.

Whilst attempting a 20.04 install into a Microsoft Windows Hyper-V guest that uses Discrete Device Assignment (DDA a.k.a. PCI pass-through) for 2x NVMe SSDs and Intel i350-T4 quad-port Gigabit Ethernet we found that the installer kernel (ubuntu-server) does not include the "drivers/pci/controller/pci-hyperv.ko" module that is required for Linux to discover the Hyper-V para-virtualised PCI bus.

Eventually discovered the module in the installer ISO's /pool/main/l/linux/linux-modules-extra-`uname-r`_amd64.deb and were able to manually install it with:

# udpkg --unpack /cdrom/pool/main/l/linux/linux-modules-extra-`uname -r`_amd64.deb
# depmod

After which it could be loaded ("pci-hyperv-intf.ko" is already installed):

# modprobe pci-hyperv-intf
# modprobe pci-hyperv

At this point it is possible to use the NVMe devices.

We used 'mdadm' to create a RAID-1 mirror and then returned to the installer and were able to use the partitioner to install the root file-system to NVMe, although it is worth noting that GRUB has to be installed to a Hyper-V virtual storage device (a Hyper-V file on NTFS) in order to boot since the guest UEFI nor GRUB can 'see' any PCI devices without help from a para-virtualisation driver.

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

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 1859212

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.

[TJ (tj)]

There are no logs required; this is a feature enhancement request