Hi,
Here are the steps which I followed.
Created VM with the below command.
virt-install \
--connect qemu:///system \
--name ixa00400270_002 \
--memory 4096 \
--vcpus 16,sockets=1,cores=8,threads=1 \
--noautoconsole \
--disk path=/vm/images/ixa00385352_002.img \
--machine q35 \
--network default,model=virtio \
--virt-type kvm \
--graphics none \
--import \
--qemu-commandline="-machine kernel-irqchip=split -device
intel-iommu,intremap=on,caching-mode=on,aw-bits=48 -s"
After that, I am trying to attach VF's by using virsh attach-device
Adding two more ports to the guest.
virt-xml --add-device --controller pci,model=pcie-root-port,index=7
ixa00400270_002
virt-xml --add-device --controller pci,model=pcie-root-port,index=8
ixa00400270_002
virsh attach-device ixa00400270_002 pci1.xml
virsh attach-device ixa00400270_002 pci2.xml
Once I attach second VF's guest is crashed.
The reason from host kernel log is:
[ 7445.865405] kvm [15991]: vcpu0, guest rIP: 0xffffffff8268072f disabled
perfctr wrmsr: 0xc2 data 0xffff
[ 7569.000006] vfio-pci 0000:3d:01.3: enabling device (0000 -> 0002)
[ 7599.446065] vfio-pci 0000:3d:01.5: enabling device (0000 -> 0002)
[ 7599.866275] vfio_pin_pages_remote: RLIMIT_MEMLOCK (5368709120) exceeded
[ 7600.329913] virbr0: port 2(vnet0) entered disabled state
[ 7600.332941] device vnet0 left promiscuous mode
[ 7600.332960] virbr0: port 2(vnet0) entered disabled state
** Attachment added: "Guest Machine log"
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1854952/+attachment/5309774/+files/ixa00400270_002.log
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https://bugs.launchpad.net/bugs/1854952
Title:
VM is getting crashed/shutdown when we attach VF's on demand
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