[Bug 1944508] [NEW] [P10] CAS : last kernel not auto booted

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== Comment: #0 - Frederic Bonnard <FREDERIC at fr.ibm.com> - 2021-04-26 02:32:28 ==
Hi,

testing Debian/Ubuntu installation with OpenQA on a P10 LPAR with a virtual optical device, the LPAR boots the iso till grub menu.
First entry is selected and Enter gets pressed.
The kernel starts and calls ibm,client-architecture-support .
My understanding is that either it returns or reboots with the new feature set
and in which case, the grub menu shouldn't pop out again and the last booted kernel should be used with the same parameters.
But it is not the case at the moment, the iso grub menu pops out again.

This does not happen all the time. Sometimes the kernel does not reboot
and  (maybe the required settings are ok but in this case, I don't know
how it got set).

Here is a video showing this behavior on Debian (kernel 5.10.0-6, grub 2.04, http://d-i.debian.org/daily-images/ppc64el/daily/netboot/mini.iso).
Same on Ubuntu 20.04 daily (kernel 5.4.0-72.80, grub 2.04, http://cdimage.ubuntu.com/ubuntu-server/focal/daily-live/current/focal-live-server-ppc64el.iso)
Regards,

F.

== Comment: #1 - Frederic Bonnard <FREDERIC at fr.ibm.com> - 2021-04-26
02:33:14 ==


== Comment: #2 - Frederic Bonnard <FREDERIC at fr.ibm.com> - 2021-04-26 02:33:48 ==


== Comment: #3 - Diego Pereira Domingos <diegodo at br.ibm.com> - 2021-04-29 10:52:18 ==
Hi Fr?deric,

we will need to push the required patches for CAS reboot into
UBUNTU/DEBIAN.

== Comment: #8 - Diego Pereira Domingos <diegodo at br.ibm.com> -
2021-08-09 08:54:07 ==


== Comment: #10 - Diego Pereira Domingos <diegodo at br.ibm.com> - 2021-08-10 08:13:10 ==
Hello Canonical,

we need this patch in grub so it can support CAS reboot for ppc64le

Thanks

** Affects: grub-installer (Ubuntu)
     Importance: Undecided
     Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
         Status: New


** Tags: architecture-ppc64le bugnameltc-192533 severity-medium targetmilestone-inin---
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[P10] CAS : last kernel not auto booted
https://bugs.launchpad.net/bugs/1944508
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