[fedora-arm] Re: F28 installation fails on ThunderX2 CN99xx

[Peter Robinson]

Robert,
The Fedora 28 ship has long sailed, please test on Fedora 29 Beta RCs
and provide feedback on that:
https://dl.fedoraproject.org/pub/alt/stage/

[ 43.222590] Internal error: Oops: 96000021 [#1] SMP
[ 43.230500] CPU: 87 PID: 1 Comm: swapper/0 Not tainted 4.16.3-301.fc28.aarch64 #1
[ 43.237968] Hardware name: Cavium Inc. Saber/Saber, BIOS Cavium reference firmware version 6.4 05/30/2018
[ 43.247521] pstate: 20400009 (nzCv daif +PAN -UAO)
[ 43.252304] pc : test_atomic64+0x134c/0x152c
https://dl.fedoraproject.org/pub/fedora/linux/releases/28/Server/aarch64/os/images/pxeboot/
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=32c3fa7cdf0c

Sure, all of the above isn't solvable now, we need to look at F-29+

Now is the time to ensure everything that is needed here for F-29 to
be there and all testing should be done there.

Also, a workaround that uses kernel and initrd from f29 or rawhide for
f28 installation does not work as the bootchain of the installer needs
files from the same media. Otherwise boot fails with "Pane is dead"
and "new value non-existent xfs filesystem is not valid as a default
https://access.redhat.com/solutions/697913
Do you see an alternative workaround to pxe boot f28?

Use Fedora 29.

Would it be possible to update the installer's kernel and initrd?

No.

Another question: Would it be possible to include early silicon (Rev
Ax) Errata workarounds to f28, f29 and rawhide? There are 2 patches

Are these patches expected to go upstream? What impact would those
patches have on other ARM platforms or even other architectures? If
they are not planned to go upstream how long would you expect Fedora
to carry them before we dropped them?

https://github.com/cavium/thunderx-linux/commits/thunder-4.16
PCI: Vulcan: AHCI PCI bar fix for Broadcom Vulcan early silicon
https://github.com/cavium/thunderx-linux/commit/940d574d4ef0
ahci: thunderx2: Fix for errata that affects stop engine
https://github.com/cavium/thunderx-linux/commit/6fb2dd30218a
There are still some Ax systems around that wouldn't be supported
otherwise.

You need kernel/kernel-core/kernel-modules.
dnf --disablerepo=\* --enablerepo=f29 repoquery kernel\*

Peter
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