Hi Jason, Thanks for your hints, unfortunately seems not an init problem because in the same init configuration I tried the 5.10.23 (preempt_rt) without the Juergen patch but with the BUG_ON removed and it boots without problem. So seems that applying the serie does something (on a preempt_rt kernel) and we are trying to figure out what.
> On 23 Mar 2021, at 12:36, Jason Andryuk <jandr...@gmail.com> wrote: > > On Mon, Mar 22, 2021 at 3:09 PM Luca Fancellu <luca.fance...@arm.com> wrote: >> >> Hi Juergen, >> >> Yes you are right it was my mistake, as you said to remove the BUG_ON(…) >> this serie >> (https://patchwork.kernel.org/project/xen-devel/cover/20210306161833.4552-1-jgr...@suse.com/) >> is needed, since I’m using yocto I’m able to build a preempt_rt kernel up >> to the 5.10.23 and for this reason I’m applying that serie on top of this >> version, then I’m removing the BUG_ON(…). >> >> A thing that was not expected is that now the Dom0 kernel is stuck on >> “Setting domain 0 name, domid and JSON config…” step and the system seems >> unresponsive. Seems like a deadlock issue but looking into the serie we >> can’t spot anything and that serie was also tested by others from the >> community. >> Do you have any idea on that? > > I think this can happen if xenstored isn't running. Client access to > xenstore blocks until xenstored becomes available. So check your init > scripts ordering. > > Regards, > Jason Cheers, Luca
