cpuid, bti and/or pv-l1tf xen parameters affect spontaneous rebooting issue

[eve]

This is a follow-up to the "spontaneous rebooting" issue described here:

https://groups.google.com/d/msg/qubes-users/vDTVggCaAlE/Uv6WOTDvDwAJ

I have experienced no random reboots for over 60 days since disabling
all meltdown\spectre\l1tf mitigations via xen commandline parameters
(GRUB_CMDLINE_XEN_DEFAULT):

cpuid=no-ibrsb,no-ibpb,no-stibp
bti=thunk=jmp,rsb_native=no,rsb_vmexit=no pv-l1tf=false

I am narrowing these down by process of elimination as we speak. See you
in a year!

[awokd]

eve:

Were you getting these reboots on the 4.14 kernel, or only newer?

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