Re: NetBSD dom0 PVH: hardware interrupts stalls

[Jan Beulich <jbeulich@xxxxxxxx>]

On 24.11.2020 14:59, Manuel Bouyer wrote:
> On Tue, Nov 24, 2020 at 01:21:02PM +0100, Roger Pau Monné wrote:
>> [...]
>>> What we're missing is LAPIC information, since the masked status logged
>>> is unclear: (-MM) isn't fully matching up with "mask=0". But of course
>>> the former is just a software representation, while the latter is what
>>> the RTE holds. IOW for the interrupt to not get delivered, there needs
>>> to be this or a higher ISR bit set (considering we don't use the TPR),
>>> or (I think we can pretty much exclude this) we'd need to be running
>>> with IRQs off for extended periods of time.
>>
>> Let's dump the physical lapic(s) IRR and ISR together with the
>> IO-APIC state. Can you please apply the following patch and use the
>> 'i' key again? (please keep the previous patch applied)
> 
> Done, you'll find the log at
> http://www-soc.lip6.fr/~bouyer/xen-log6.txt

Hmm, I can't spot respective output. Are you sure you did this with
a hypervisor with Roger's latest patch in place?

Jan