[vfio-users] IOMMU restrictions inside a VM

[Erik Skultety]

On Sun, Mar 04, 2018 at 04:47:10PM -0500, Taiidan at gmx.com wrote:
> I am getting an error.
>
> error: unsupported configuration: IOMMU device: 'intel' is only supported
> with Q35 machines
>
> <domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
>   <name>test</name>
>   <currentMemory unit='GiB'>2</currentMemory>
>   <memory unit='GiB'>2</memory>
>   <os>
>     <type>hvm</type>

Hi, I'm not sure whether this is still relevant, but ^this <type> element is
redundant, if you drop it it should work as expected, the error you get is from
libvirt which parsed the first <type> element in the XML tree but instead of
the other one below.

Erik

>     <bootmenu enable='yes'/>
>     <type arch='x86_64' machine='pc-q35-2.11'>hvm</type>
>   </os>
>   <features>
>     <acpi/>
>     <apic/>
>     <pae/>
>     <ioapic driver='qemu'/>
>   </features>
>
> pc-q35-2.11 is listed as supported in "qemu-system-x86_64 -machine help" I
> have also tried many of the other q35 options to no success.
>
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