hwclock failed on B-5.4 / F-5.4 Oracle ARM64 bare-metal BM.Standard.A1.160

[Po-Hsu Lin]

Issue found on:
  * 5.4.0-1071.77~18.04.1
  * 5.4.0-1071.77

Passed on:
  * 5.13.0-1028.33~20.04.1
  * 5.13.0-1028.33
  * 5.15.0-1004.6

Not failing with 4.15.0-1093.102 / 4.15.0-1093.102~16.04.1 as this instance was not tested there

Test failed with:
    hwclock: Cannot access the Hardware Clock via any known method.

This is a new node added in this cycle, so this is not a regression.
Looks like a kernel support issue to me.

[Po-Hsu Lin (cypressyew)]

I grabbed an ARM64 bare-metal system in our pool and run the hwclock test on it. It can pass with the generic Bionic HWE kernel 5.4.0-109-generic #123~18.04.1-Ubuntu without any problem.

[Po-Hsu Lin (cypressyew)]

This test can pass with 5.15.0-1013.17~20.04.1 on this very same node.