[vfio-users] Nvidia code 43 with Ubuntu 16.04 host

[Rokas Kupstys]

Why on earth are you using wrapper script? If you use shellscript to
start qemu then add these flags there. If you are using libvirt -
libvirt also supports these features. This mess is looking for a trouble
and i believe you found it.

Rokas Kupstys

On 2016.09.06 00:28, Simon Ye wrote:
> I'm trying to use a Windows 10 Enterprise guest but keep getting error
> 43 with my Nvidia 750Ti card. I have set the kvm hidden state flag and
> well as overriden the vendor_id flag via a wrapper script as suggested
> by other users on this mailing list:
>
> #!/bin/sh
> exec /usr/bin/qemu-system-x86_64 \
>   `echo "\$@" | sed 's|hv_relaxed|hv_relaxed,hv_vendor_id=KeenlyKVM|g'`
>
> Similarly I have tried removing everything from the hyperv tag section
> as well as ensuring there isn't any hypervclock timer tag.
> Unfortunately no combination of hyperv settings seems to bypass Code
> 43. This isn't a hardware problem because passthrough works fine with
> an Arch Linux guest. The full xml is located
> here http://pastebin.com/3zta7eW1. I cannot place the vendor_id flag
> in the xml because it is validated in the Ubuntu package, but as
> mentioned above I am interdicting the command line args. This made me
> suspect that the Ubuntu packages were too outdated, so could that be
> the reason?
>
> In Ubuntu 16.04 the package versions are:
> libvirt: 1.3.1
> qemu-kvm: 2.5
> virt-manager: 1.3.2
>
> Currently running kernel: 4.4.0-37
>
>
>
>
>
>
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