On 24/02/2016 20:26, Bronek Kozicki wrote:
I'm successfully passing through two Quadro M5000 (to two instances of
Windows 10), looking at
http://us.download.nvidia.com/Windows/Quadro_Certified/361.91/361.91-win10-quadro-grid-release-notes.pdf
(page 9) it is not obvious that this would work for either your K420 or
mine M5000. One gotcha - when starting Windows I do not see boot screen
at all, only Windows logon scren after nVidia drivers had loaded.
Explanation is in Alex's email sent to this list on 6th Feb 2016,
subject "No boot screen on Quadro M5000?" - basically passed through
Quadro cards are meant to be secondary  only (I use them as only card,
though). However this small quirk aside, this works for me very well.
. . .
socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-bochnia-vfio2/monitor.sock,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control -rtc
base=utc,driftfix=slew

... in case you are puzzled by above "-rtc base=utc,driftfix=slew", I use RealTimeIsUniversal=0x1 and have disabled Windows Time service in both guests (since doing anything else is like trying to fight the tide - my host clock is controlled by hypervisor and that's all to it, as far as Windows guests are concerned). You can read more about this here http://superuser.com/questions/494432/force-windows-8-to-use-utc-when-dealing-with-bios-clock



B.


PS sorry about previous "empty" email, keyboard malfunction

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