So I can confirm the behavior with a local Xen Server and a HVM Xenial
guest. While the current proposed 4.4 kernel crashes while setting up
the acpi interrupt, this does not happen with a 4.15 kernel from
proposed on a Bionic HVM guest. Still I was able to get the 4.4 kernel
to boot by reverting the following patch. Despite it being applied to
4.4 and 4.15 proposed. So it sounds like something outside the scope of
the patch itself that changed between 4.4 and 4,15 is causing the
problems.
commit 110e8369be2953ee2d3f7fd00d66034daa4c695c
Author: Thomas Gleixner <t...@linutronix.de>
Date: Tue Aug 25 17:22:58 2020 +0200
XEN uses irqdesc::irq_data_common::handler_data to store a per interrupt
XEN data pointer which contains XEN specific information.
BugLink: https://bugs.launchpad.net/bugs/1895031
commit c330fb1ddc0a922f044989492b7fcca77ee1db46 upstream.
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https://bugs.launchpad.net/bugs/1896725
Title:
xenial 4.4.0-191-generic in -proposed has a regression
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