Could you please advise about what could be the issue here?
BTW: I use same configuration (VM XML file attached) when running linux VM
(RH7.2) image (instead of Win Hyper-V) over the same host and SRIOV is working
for me there.
Here the XML file I use to define the VM (our emulated NIC is added at the end
of XML):
"
<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
<name>nst105</name>
<uuid>0249a525-2ee2-432b-a1f5-a6db83b089a3</uuid>
<memory unit='KiB'>8388608</memory>
<currentMemory unit='KiB'>8388608</currentMemory>
<vcpu placement='static'>8</vcpu>
<resource>
<partition>/machine</partition>
</resource>
<os>
<type arch='x86_64' machine='pc-q35-2.11'>hvm</type>
</os>
<features>
<acpi/>
<apic/>
<hyperv>
<relaxed state='on'/>
<vapic state='on'/>
<spinlocks state='on' retries='8191'/>
</hyperv>
</features>
<cpu mode='custom' match='exact' check='none'>
<model fallback='forbid'>SandyBridge</model>
<feature policy='require' name='hypervisor'/>
<feature policy='require' name='vmx'/>
</cpu>
<clock offset='localtime'>
<timer name='rtc' tickpolicy='catchup'/>
<timer name='pit' tickpolicy='delay'/>
<timer name='hpet' present='no'/>
<timer name='hypervclock' present='yes'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<pm>
<suspend-to-mem enabled='no'/>
<suspend-to-disk enabled='no'/>
</pm>
<devices>
<emulator>/opt/qemu/bin/qemu-system-x86_64</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/images/nst105.qcow2'/>
<target dev='sda' bus='sata'/>
<boot order='2'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<controller type='usb' index='0' model='ich9-ehci1'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1d'
function='0x7'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci1'>
<master startport='0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1d' function='0x0'
multifunction='on'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci2'>
<master startport='2'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1d'
function='0x1'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci3'>
<master startport='4'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1d'
function='0x2'/>
</controller>
<controller type='sata' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1f'
function='0x2'/>
</controller>
<controller type='pci' index='0' model='pcie-root'/>
<controller type='pci' index='1' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='1' port='0x10'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'
multifunction='on'/>
</controller>
<controller type='pci' index='2' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='2' port='0x11'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02'
function='0x1'/>
</controller>
<controller type='pci' index='3' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='3' port='0x12'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02'
function='0x2'/>
</controller>
<controller type='pci' index='4' model='dmi-to-pci-bridge'>
<model name='i82801b11-bridge'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1e'
function='0x0'/>
</controller>
<controller type='pci' index='5' model='pci-bridge'>
<model name='pci-bridge'/>
<target chassisNr='5'/>
<address type='pci' domain='0x0000' bus='0x04' slot='0x00'
function='0x0'/>
</controller>
<interface type='bridge'>
<mac address='00:50:56:1b:dd:6f'/>
<source bridge='br0'/>
<model type='virtio'/>
<boot order='1'/>
<address type='pci' domain='0x0000' bus='0x01' slot='0x00'
function='0x0'/>
</interface>
<serial type='pty'>
<target port='0'/>
</serial>
<console type='pty'>
<target type='serial' port='0'/>
</console>
<input type='tablet' bus='usb'>
<address type='usb' bus='0' port='1'/>
</input>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1'
keymap='en-us'>
<listen type='address' address='127.0.0.1'/>
</graphics>
<video>
<model type='vga' vram='16384' heads='1' primary='yes'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01'
function='0x0'/>
</video>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x02' slot='0x00'
function='0x0'/>
</memballoon>
</devices>
<seclabel type='none' model='none'/>
<seclabel type='dynamic' model='dac' relabel='yes'/>
<qemu:commandline>
<qemu:arg value='-device'/>
<qemu:arg
value='pcie-root-port,pref64-reserve=500M,slot=0,id=pcie_port.1'/>
<qemu:arg value='-netdev'/>
<qemu:arg value='tap,id=tap5,ifname=tap5,script=no,downscript=no'/>
<qemu:arg value='-device'/>
<qemu:arg value='my_emu_nic,netdev=tap5,bus=pcie_port.1'/>
</qemu:commandline>
</domain>
"
______________________
General info:
Host OS: RH7.0 (Kernel: 4.14.13)
QEMU version: 2.11
libvirt version: 3.2.0
Running the following on the host shows that both nested and IOMMU are
enabled:
~]#: cat /sys/module/kvm_intel/parameters/nested
Y
~]# dmesg | grep -e DMAR -e IOMMU
[ 0.000000] DMAR: IOMMU enabled
Thanks,
Elijah