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

  • To: Jan Beulich <jbeulich@xxxxxxxx>, Ian Jackson <iwj@xxxxxxxxxxxxxx>
  • From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  • Date: Fri, 15 Jan 2021 10:59:33 +0000
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On 15/01/2021 10:52, Andrew Cooper wrote:
> On 15/01/2021 09:57, Jan Beulich wrote:
>> 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.
> Yes, sorry for forgetting.  I was literally working on it while writing
> this email - no idea why I forgot it.
> 4) zstd support to unbreak Fedora.  (I'm deliberately putting this in
> the bugs rather than feature cateogry).

Ha!  I should have read further through my emails before replying.

But we do at least want this item tracking.




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