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Re: xen/evtchn: Dom0 boot hangs using preempt_rt kernel 5.10


  • To: Jürgen Groß <jgross@xxxxxxxx>
  • From: Luca Fancellu <luca.fancellu@xxxxxxx>
  • Date: Mon, 22 Mar 2021 19:08:13 +0000
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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-jgross@xxxxxxxx/)
 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?

Thank you for your time.

> On 19 Mar 2021, at 11:54, Jürgen Groß <jgross@xxxxxxxx> wrote:
> 
> On 19.03.21 12:50, Luca Fancellu wrote:
>> Hi Juergen,
>> Could you confirm that back porting this two serie to the linux kernel 5.10:
>> https://patchwork.kernel.org/project/xen-devel/cover/20201210192536.118432146@xxxxxxxxxxxxx/
> 
> I don't see why this one would be needed?
> 
>> https://patchwork.kernel.org/project/xen-devel/cover/20210306161833.4552-1-jgross@xxxxxxxx/
> 
> This is already part of 5.10.24.
> 
> 
> Juergen
> <OpenPGP_0xB0DE9DD628BF132F.asc>

Cheers,
Luca


 


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