Comment 25 for bug 1928674

So xenial: I verified that maas-style netbooting that chainloads to local grub still works.

On arm64 canonistack, both the version in -updates and the version in -proposed fail to boot.

After upgrade, the first boot gives us:

EFI stub: Booting Linux Kernel...
EFI stub: Using DTB from configuration table
EFI stub: Exiting boot services and installing virtual address map...

The second boot with updates gave us:

[2J[01;01H[=3h[2J[01;01H[2J[01;01H[=3h[2J[01;01H[2J[01;01H[=3h[2J[01;01H[0m[35m[40m[0m[37m[40merror: symbol `grub_file_filters' not found.
Entering rescue mode...
grub rescue>

The second boot with proposed gave us:

[2J[01;01H[=3h[2J[01;01H[2J[01;01H[=3h[2J[01;01H[2J[01;01H[=3h[2J[01;01H[0m[35m[40m[0m[37m[40merror: relocation 0x113 is not implemented yet.
Entering rescue mode...
grub rescue>

So there is some regression in terms of relocations due to the toolchain change, but it did not boot before either, so I'm unsure if that's a worthwhile regression to block the update.