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Re: drop xen4.8 ?

At Wed, 18 Dec 2019 14:51:50 +0700, Robert Elz <kre%munnari.OZ.AU@localhost> wrote:
Subject: Re: drop xen4.8 ?
> With Xen, I can get one of the xen processes into a tstile lockup
> (which then prevents further accesses to anything via "xl" - but
> doesn't affect operation of the Dom0 or running DomU's otherwise)
> I think by using a multi-processor DomU, but I haven't done enough
> experiments to really diagnose a cause yet (and as said already,
> everything related that I am running is ancient).

This is probably the same known bug, I think in the kernel, that I
encountered with 7.1 running with Xen-4.8.  I believe upgrading to 8.x
will eliminate it.  It can be a bit of a chore to upgrade Xen at the
same general time as upgrading the kernel, and as I recall it is not
necessary (I think I worked around the bug initially by just using the
change I found as a quick patch), but it is probably worthwhile to also
upgrade Xen (along with all other packages installed in the dom0).

For my story about it see my message <m1ei59B-0036t1C@more.local>,
posted on 2018/02/03 with the subject "a story of debugging a NetBSD/Xen
server crash and hang".

					Greg A. Woods <gwoods%acm.org@localhost>

Kelowna, BC     +1 250 762-7675           RoboHack <woods%robohack.ca@localhost>
Planix, Inc. <woods%planix.com@localhost>     Avoncote Farms <woods%avoncote.ca@localhost>

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