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Description of problem: In commit 1c4a55dbed9a47fde9294f7de6c8bb060d874c88 into the qemu tree (http://git.qemu.org/?p=qemu.git;a=commitdiff;h=1c4a55dbed9a47fde9294f7de6c8bb060d874c88), support was added for a flag "hv-vendor-id" which would allow the user to specify the Hyper-V vendor ID. Being able to set this allows for better support of VGA passthrough devices, specifically with regards to some nVidia cards. This has been an allowable option to qemu for several months now; can it be an allowed option in libvirt's XML now? I think the appropriate place would be within features and hyperv, such as like so: <features> ... <hyperv> <relaxed state='on'/> <vapic state='on'/> <spinlocks state='on' retries='4096'/> <hv-vendor-id name='MyVendorId'/> </hyperv> ... </features> If this is already possible, can you please document on https://libvirt.org/formatdomain.html ?
Thanks for the detailed RFE. Actually this was added in libvirt v1.3.3: commit 7068b56c8526667750d8cb91116e9b40382422f3 Author: Maxim Nestratov <mnestratov> Date: Thu Mar 10 15:43:49 2016 +0300 conf: qemu: Add support for more HyperV Enlightenment features The XML is: <hyperv> <vendor_id state='on' value='my string'/> </hyperv>