Re: netbsd PVH dom0: xen clock event stops

[Manuel Bouyer <bouyer@xxxxxxxxxxxxxxx>]

On Sun, Nov 15, 2020 at 06:49:38PM +0100, Manuel Bouyer wrote:
> Hello,
> I spent some more time debugging NetBSD as a PVH dom0 on Xen,
> With Roger's patch to avoid a Xen panic, the NetBSD kernel stalls
> configuring devices. At first I though it was an issue with hardware
> interrupts, but it more likely is an issue with Xen timer events.
> Specifically: virtual CPU 0 stops receiving timer events, while other
> CPUs keep receiving them. I tried to force a timer rearm but this didn't help.
> The event is not masked nor pending on Xen or NetBSD, as confirmed by 'q'.
> Others events (the Xen console, the debug event) are properly received
> by CPU0. I don't know how to debug this more at this point.

I forgot to mention: the same NetBSD kernel boots fine as a PVH domU

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