Bug 2117948

Description of problem:

Customer wants some of the patches that are already on systemd upstream to be backported to RHEL8. Those are related to systemd-detect-virt misidentifying amazon nitro platform systems as physical, due to the way systemd interprets DMI data. 

Fixed Upstream - https://github.com/systemd/systemd/pull/19403

Version-Release number of selected component (if applicable):

Current RHEL 8.6(possibly RHEL9, but not tested)

How reproducible:

Every time while executing SYSTEMD_LOG_LEVEL=debug systemd-detect-virt

Steps to Reproduce:

1.Execute SYSTEMD_LOG_LEVEL=debug systemd-detect-virt

Actual results:

Found container virtualization none.
No virtualization found in DMI
No virtualization found in CPUID
Virtualization XEN not found, /proc/xen does not exist
/proc/device-tree: No such file or directory
UML virtualization not found in /proc/cpuinfo.
This platform does not support /proc/sysinfo
Found VM virtualization none
none


Expected results:

With the upstream patches, systemd-detect-virt should provide a more detailed or precise output of EC2/Nitro instances. 

Borrowing the output from the upstream patches:

# With changes from #17315
admin@ip-10-0-0-178:~$ sudo sh -c "SYSTEMD_LOG_LEVEL=debug LD_LIBRARY_PATH=$PWD ./systemd-detect-virt"
Found container virtualization none.
Virtualization Amazon EC2 found in DMI (/sys/class/dmi/id/sys_vendor)
Found VM virtualization amazon
amazon

# With this change
admin@ip-10-0-0-12:~/systemd$ sudo sh -c "SYSTEMD_LOG_LEVEL=debug LD_LIBRARY_PATH=$PWD/foo/src/shared/ ./foo/systemd-detect-virt"
Found container virtualization none.
Virtualization Amazon EC2 found in DMI (/sys/class/dmi/id/sys_vendor)
DMI BIOS Extension table indicates virtualization
Found VM virtualization amazon
amazon

Additional info:

For the customer that requested this feature, this seems to be important since some deploy decisions are made based on the output provided by systemd-detect-virt, and it is important that this tool report Amazon hardware correctly.