Xenbus issues on Qubes OS / win10

[Rafał Wojdyła <omeg@xxxxxxxxxxxxxxxxxxxxxx>]

Hello,

I'm trying the latest PV drivers on Qubes OS (backend is Xen 4.14.5) 
with Windows 10 pro and having some issues. Mainly, xenbus fails to 
initialize properly. I've attached a debug output, the main issue seems 
to be this:
xenbus|StoreAcquire: ====>
xenbus|GnttabAcquire: ====>
xenbus|RangeSetPop: fail3
xenbus|RangeSetPop: fail2
xenbus|RangeSetPop: fail1 (c000009a)
xenbus|FdoAllocateHole: fail1 (c000009a)
xenbus|GnttabAcquire: fail2
xenbus|GnttabAcquire: fail1 (c000009a)
xenbus|StoreAcquire: fail1 (c000009a)
xenbus|FdoD3ToD0: fail6

...which seems pretty suspicious. It's been some years since I looked at 
the drivers' code so any ideas as to what may be causing this are welcome :)
I've built the driver myself from commit b03c9c0.

Btw, is there a way to tell the drivers to leave the xen's serial 
console alone? I'm using it for debugging because adding a second serial 
device is currently problematic in Qubes.
--
Rafał Wojdyła
Invisible Things Lab

Attachment: xenbus-fail.txt
Description: Text document

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