Re: [Xen-devel] [BUG] panic: "IO-APIC + timer doesn't work" - several people have reproduced

[Jason Andryuk <jandryuk@xxxxxxxxx>]

On Tue, Mar 17, 2020 at 11:23 AM Jason Andryuk <jandryuk@xxxxxxxxx> wrote:
>
> On 17.03.2020 15:08, Jan Beulich wrote:
> >On 17.03.2020 15:08, Jan Beulich wrote:
> >> On 17.03.2020 14:48, Jason Andryuk wrote:
> >>> I got it to boot past "IO-APIC + timer doesn't work".  I programmed
> >>> the HPET to provide a periodic timer in hpet_resume() on T0.  When I
> >>> actually got it programmed properly, it worked to increment
> >>> pit0_ticks.  I also made timer_interrupt() unconditionally
> >>> pit0_ticks++ though that may not matter.
> >>
> >> Hmm, at the first glance I would imply the system gets handed to Xen
> >> with a HPET state that we don't (and probably also shouldn't) expect.
> >> Could you provide HPET_CFG as well as all HPET_Tn_CFG and
> >> HPET_Tn_ROUTE values as hpet_resume() finds them before doing any
> >> adjustments to them? What are the components / parties involved in
> >> getting Xen loaded and started?

I forgot to mention the boot sequence:
EFI -> grub2-efi -> xen.gz
grub2 is using multiboot2 & module2 commands.

Thanks for taking a look.

Regards,
Jason

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