Re: NetBSD dom0 PVH: hardware interrupts stalls

[Manuel Bouyer <bouyer@xxxxxxxxxxxxxxx>]

On Thu, Nov 26, 2020 at 04:09:37PM +0100, Roger Pau Monné wrote:
> > 
> > Oh, that's actually very useful. The interrupt is being constantly
> > injected from the hardware and received by Xen, it's just not then
> > injected into dom0 - that's the bit we are missing. Let me look into
> > adding some more debug to that path, hopefully it will tell us where
> > things are getting blocked.
> 
> So I have yet one more patch for you to try, this one has more
> debugging and a slight change in the emulated IO-APIC behavior.
> Depending on the result I might have to find a way to mask the
> interrupt so it doesn't spam the whole buffer in order for us to see
> exactly what triggered this scenario you are in.

OK, here it is:
http://www-soc.lip6.fr/~bouyer/xen-log9.txt

I had to restart from a clean source tree to apply this patch, so to make
sure we're in sync I attached the diff from my sources

-- 
Manuel Bouyer <bouyer@xxxxxxxxxxxxxxx>
     NetBSD: 26 ans d'experience feront toujours la difference
--

Attachment: xen.diff
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