Re: [ANNOUNCE] Xen 4.15 release schedule and feature tracking

[Jan Beulich <jbeulich@xxxxxxxx>]

On 14.01.2021 20:02, Andrew Cooper wrote:
> Bugs:
> 
> 1) HPET/PIT issue on newer Intel systems.  This has had literally tens
> of reports across the devel and users mailing lists, and prevents Xen
> from booting at all on the past two generations of Intel laptop.  I've
> finally got a repro and posted a fix to the list, but still in progress.
> 
> 2) "scheduler broken" bugs.  We've had 4 or 5 reports of Xen not
> working, and very little investigation on whats going on.  Suspicion is
> that there might be two bugs, one with smt=0 on recent AMD hardware, and
> one more general "some workloads cause negative credit" and might or
> might not be specific to credit2 (debugging feedback differs - also
> might be 3 underlying issue).
> 
> All of these have had repeated bug reports.  I'd classify them as
> blockers, given the impact they're having on people.

3) Fallout from MSR handling behavioral change.

Jan