I don't see that you're doing anything about hiding KVM.
<features>
...
<kvm>
<hidden state='on'/>
</kvm>
...
</features>
On Thu, Jun 30, 2016 at 10:31 AM, Cepheus <atair.aqu...@hushmail.com> wrote:
> Hello,
>
> I am trying to build a gaming guest (Ubuntu, Mint, SteamOS or something
> Ubuntu-LTS-based) on a gentoo host. The host is mostly gentoo amd64,
> hardened kernel (but with some options disabled to not get in the way),
> PIC/PIE and SSP toolchain. Relevant versions are:
>
> kernel-4.4.8
> libvirt-1.3.4
> qemu-2.5.1
>
> The UEFI image is from here, as of 2016-06-24:
> https://www.kraxel.org/repos/jenkins/edk2/
>
> Two nvidia graphics cards: The passive one (no fan) is a GeForce GTX 750
> Ti. Used by the host. The active one - a GeForce GTX 750 - is "hidden"
> from the host via pci-stub.ids boot parameter and assigned to the guest
> (both the video and the audio device, which share one IOMMU group, with
> no ther devices in the group). The card is UEFI capable, according to
> the test program from here:
> http://vfio.blogspot.de/2014/08/does-my-graphics-card-rom-support-efi.html
>
> I can install Ubuntu 16.04 fine and it works, as long as it uses the
> nouveau driver. The nvidia driver is listed in "Additional drivers" as
> compatible and can be installed, but on guest reboot the X server cannot
> use the card.
>
> These dmesg lines from the guest appear relevant:
>
> [ 4.948877] NVRM: RmInitAdapter failed! (0x23:0x56:464)
> [ 4.949354] NVRM: rm_init_adapter failed for device bearing minor
> number 0
> <repeated 12 times>
>
> Xorg.0.log says:
>
> [ 9.285] (EE) NVIDIA(GPU-0): The NVIDIA GPU at PCI:0:2:0 is not
> supported by the 361.42
> [ 9.285] (EE) NVIDIA(GPU-0): NVIDIA driver.
> [ 9.285] (EE) NVIDIA(GPU-0): Failed to initialize the NVIDIA
> graphics device!
>
> Full logs are linked below.
>
> I am sure driver versions 361.* support GPUs in the 700 range. The host
> has nearly the same configuration with nvidia-drivers-361.28.
>
> When I try to start the guest with "nomodeset" kernel parameter, the
> host hangs. Not even Alt+PrintScrn+REISUB is possible.
>
> CPU is a Core i7 5930K, on a X99A mainboard (MSI X99A Gaming 7).
>
> Before I start aimlessly changing things: Does anyone have an idea how
> to make it work, with nvidia-drivers in the guest?
>
> Things I could try:
> - update kernel
> - update libvirt
> - update qemu
> - guest boot options: acpi=off, noacpi, noapic, nolapic, vmalloc=xM, ...?
> - switch to non-hardened host kernel
> - switch to non-hardened host toolchain (will take a while to rebuild
> everything)
> - try other distributions as guest
> - other version of guest nvidia driver
> - switch the graphics card for the guest
>
> -
> Guest dmesg: https://bpaste.net/show/719a56868947
> Guest lsmod -k: https://bpaste.net/show/d9b6dc11bf71
> Guest lspci: https://bpaste.net/show/18d489d5f77c
> Guest Xorg.0.log: https://bpaste.net/show/e19d4bd301a3
> Guest configuration: https://bpaste.net/show/b2862886ee84
> Host kernel config: https://bpaste.net/show/7536e18f0131
> -
>
>
> Many thanks!
>
> Kai
>
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>
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