[libvirt-users] Windows 7 guest not starting with HyperV features enabled

[Aleksei]

Hi,

I have a Windows 7 SP1 Pro 64-bit VM which works fine on libvirt 2.3.0 
and Qemu 2.7.0.

If I enable HyperV features 
(https://libvirt.org/formatdomain.html#elementsFeatures) like "relaxed", 
"spinlocks" etc - VM doesn't boot. "Starting Windows" text appears for 
~2 seconds (no flying dots, no logo) and then it just goes to black 
screen. If I switch HyperV features back off, it boots normally again.

Running VM with debuggging enabled (virsh --log win7_hyperv.log --debug 
1 start win7) doesn't produce any errors in the log. There are no logs 
for that attempted boot in the guest either - apparently it doesn't get 
to the point when Windows starts logging.

Attaching VM xml definition (with HyperV features enabled).


-- 
/--Regards, Aleksei/
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