[Xen-devel] Xen 4.6 --with-ovmf, on UEFI Dom0 host up/running, but logging repeated "d1v0 Over-allocation for domain" ?

[PGNet Dev <pgnet.dev@xxxxxxxxx>]

On UEFI Dom0 with

        xl info | egrep "release|version"
                release                : 4.5.0-2.gb2c9ae5-default
		version                : #1 SMP PREEMPT Wed Mar 16 17:30:21 UTC 2016 
(b2c9ae5)
                xen_version            : 4.620160318T070646

with Xen built with ovmf enabled, and guest booting UEFI,

my Host & Guests are, atm, up & running.

At Dom0 host, I'm seeing these constantly repeating (every 30-32 secs) 
messages
        ...
	(XEN) [2016-03-18 14:54:35] d1v0 Over-allocation for domain 1: 524545 > 
524544
        ...

I've only found one mention of this exact error, in an OVMF-related post,

        [Xen-devel] Regression in OVMF + RMRR series
        http://lists.xen.org/archives/html/xen-devel/2015-07/msg04901.html

but it was not the primary focus of that issue.

I understand EFI/OVMF dev is in heavy flux atm ...

Is this currently known/expected?  Or, more info needed?

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