Aw: Re: [help] Xen 4.14.5 on Devuan 4.0 Chimaera, regression from Xen 4.0.1

[Denis <tachyon_gun@xxxxxx>]

On 14.03.2023 17:59, Jan Beulich wrote:
> On 14.03.2023 17:45, Denis wrote:
> > On 14.03.2023 16:37, Jan Beulich wrote:
> >> On 14.03.2023 15:53, Denis wrote:
> >>> What tests could I do or what info should I provide to help?
> >>
> >> Boot plain Linux (no Xen underneath) and collect the full set of kernel
> >> boot messages (some distros store this at /var/log/boot.msg); "full"
> >> meaning we want to be able to see all output regardless of log-level.
> >
> > I'll attach some files from /var/log.
>
> Thanks, and there we go:
>
> [    0.121463] AMD-Vi: [Firmware Bug]: : No southbridge IOAPIC found
> [    0.121495] AMD-Vi: Disabling interrupt remapping
>
> It's 5.10, so somewhat old already, but from looking at the code I wouldn't
> expect anything else with a newer kernel.

So older versions (be it Kerenel or Xen) didn't look for a secondary 
Southbridge IOAPIC?
If so, was that a change made due to the vulnerabilities in Xen due to 
passed-through
devices?
Just asking because age-old distros worked as it seems...


Denis