Comment 4 for bug 1866909

------- Comment From <email address hidden> 2020-03-27 10:00 EDT-------
Below is the list of commits for specified TBDs (sysfs enablement/platform keyring changes for powerpc):. These were upstreamed in kernel v5.5 version.

Platform Keyring changes for powerpc:
8220e22 - powerpc: Load firmware trusted keys/hashes into kernel keyring
ad72367 - x86/efi: move common keyring handler functions to new file
bd5d9c7 - powerpc: expose secure variables to userspace via sysfs
9155e23 - powerpc/powernv: Add OPAL API interface to access secure variable
39a963b - sysfs: Fixes __BIN_ATTR_WO() macro

sysfs enablement:
d72ea49 - powerpc/ima: Indicate kernel modules appended signatures are enforced
dc87f18 - powerpc/ima: Update ima arch policy to check for blacklist
273df86 - ima: Check against blacklisted hashes for files with modsig
2434f7d - certs: Add wrapper function to check blacklisted binary hash
e14555e - ima: Make process_buffer_measurement() generic
1917855 - powerpc/ima: Define trusted boot policy
2702809 - powerpc: Detect the trusted boot state of the system
4238fad - powerpc/ima: Add support to initialize ima policy rules
1a8916e - powerpc: Detect the secure boot mode of the system
82af5b6 - sysfs: Fixes __BIN_ATTR_WO() macro

May I ask the kernel version that Ubuntu will be using for 20.04 ?

Thanks & Regards,
- Nayna