Posted a patch to the list.
http://patchwork.ozlabs.org/project/qemu-
devel/patch/159664243614.622889.18307368735989783528.st...@bahia.lan/
Satheesh,
Can you please review and test ?
** Changed in: qemu
Status: New => In Progress
** Changed in: qemu
Assignee: (unassigned) => Greg Kurz (gkurz)
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https://bugs.launchpad.net/bugs/1890290
Title:
PowerPC L2(nested virt) kvm guest fails to boot with ic-mode=dual
,kernel-irqchip=on - `KVM is too old to support ic-mode=dual,kernel-
irqchip=on`
Status in QEMU:
In Progress
Bug description:
Env:
HW: Power 9 DD2.3
Host L0: 5.8.0-rc5-g8ba4ffcd8
Qemu: 5.0.50 (v5.0.0-533-gdebe78ce14)
Libvirt: 6.4.0
L1: 5.8.0-rc5-ge9919e11e
qemu_version': '5.0.50 (v5.1.0-rc2-dirty)
libvirt_version': '6.4.0'
L2: 5.8.0-rc7-g6ba1b005f
1. boot a L2 KVM guest with `ic-mode=dual,kernel-irqchip=on`
/usr/bin/virt-install --connect=qemu:///system --hvm --accelerate --name
'vm1' --machine pseries --memory=8192 --vcpu=8,maxvcpus=8,sockets=1,cores=2,t
hreads=4 --import --nographics --serial pty --memballoon model=virtio --disk
path=/home/tests/data/avocado-vt/images/f31-ppc64le.qcow2,bus=virtio,size=10,format=qcow2
--network
=bridge=virbr0,model=virtio,mac=52:54:00:e6:fe:f6 --mac=52:54:00:e6:fe:f6
--boot
emulator=/usr/share/avocado-plugins-vt/bin/qemu,kernel=/tmp/linux/vmlinux,kernel_args="root=/de
v/vda2 rw console=tty0 console=ttyS0,115200 init=/sbin/init initcall_debug
selinux=0" --noautoconsole --qemu-commandline=" -M
pseries,ic-mode=dual,kernel-irqchip=on"
ERROR internal error: process exited while connecting to monitor:
2020-08-04T11:12:53.304482Z qemu: KVM is too old to support
ic-mode=dual,kernel-irqchip=on
Qemu Log:
```
/usr/share/avocado-plugins-vt/bin/qemu \
-name guest=vm1,debug-threads=on \
-S \
-object
secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-5-vm1/master-key.aes
\
-machine pseries-5.1,accel=kvm,usb=off,dump-guest-core=off \
-cpu POWER9 \
-m 8192 \
-overcommit mem-lock=off \
-smp 8,sockets=1,dies=1,cores=2,threads=4 \
-uuid 20a3351b-2776-4e75-9059-c070fe3dd44b \
-display none \
-no-user-config \
-nodefaults \
-chardev socket,id=charmonitor,fd=34,server,nowait \
-mon chardev=charmonitor,id=monitor,mode=control \
-rtc base=utc \
-no-shutdown \
-boot strict=on \
-kernel /tmp/linux/vmlinux \
-append 'root=/dev/vda2 rw console=tty0 console=ttyS0,115200 init=/sbin/init
initcall_debug selinux=0' \
-device qemu-xhci,p2=15,p3=15,id=usb,bus=pci.0,addr=0x2 \
-device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x3 \
-blockdev
'{"driver":"file","filename":"/home/tests/data/avocado-vt/images/f31-ppc64le.qcow2","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}'
\
-blockdev
'{"node-name":"libvirt-1-format","read-only":false,"driver":"qcow2","file":"libvirt-1-storage","backing":null}'
\
-device
virtio-blk-pci,bus=pci.0,addr=0x4,drive=libvirt-1-format,id=virtio-disk0,bootindex=1
\
-netdev tap,fd=37,id=hostnet0,vhost=on,vhostfd=38 \
-device
virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:e6:fe:f6,bus=pci.0,addr=0x1
\
-chardev pty,id=charserial0 \
-device spapr-vty,chardev=charserial0,id=serial0,reg=0x30000000 \
-chardev socket,id=charchannel0,fd=39,server,nowait \
-device
virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0
\
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 \
-M pseries,ic-mode=dual,kernel-irqchip=on \
-msg timestamp=on
2020-08-04 11:12:53.169+0000: Domain id=5 is tainted: custom-argv
2020-08-04 11:12:53.179+0000: 11120: info : libvirt version: 6.4.0, package:
1.fc31 (Unknown, 2020-06-02-05:09:40, ltc-wspoon4.aus.stglabs.ibm.com)
2020-08-04 11:12:53.179+0000: 11120: info : hostname: atest-guest
2020-08-04 11:12:53.179+0000: 11120: info : virObjectUnref:347 :
OBJECT_UNREF: obj=0x7fff0c117c40
char device redirected to /dev/pts/0 (label charserial0)
2020-08-04T11:12:53.304482Z qemu: KVM is too old to support
ic-mode=dual,kernel-irqchip=on
2020-08-04 11:12:53.694+0000: shutting down, reason=failed
```
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