[Bug 217307] windows guest entering boot loop when nested virtualization enabled and hyperv installed

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=217307

--- Comment #8 from Michał Zegan (webczat@outlook.com) ---
Hello,
the problem is, nothing helps.
Currently I have the following setup changed in reference to my previous config
(qemu cmdline below):
- set cpu to Skylake-Client-noTSX-IBRS (note i also tried nehalem or qemu64
randomly and nothing worked, including qemu64 not even booting at all but
unsure why).
- actually removed/commented out all devices except the ones I need like
sound/video/disks.
- Disabled things like smm, secureboot and everything else, just in case.
- Also disabled any and all enlightenments i could find.

The effect is all the same (note I enable vmx feature in cpu settings, if not
enabled then the system boots without it).

Command line is:

/usr/bin/qemu-system-x86_64 \
-name guest=win11,debug-threads=on \
-S \
-object
'{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain-22-win11/master-key.aes"}'
\
-blockdev
'{"driver":"file","filename":"/usr/share/edk2/ovmf/OVMF_CODE.fd","node-name":"libvirt-pflash0-storage","auto-read-only":true,"discard":"unmap"}'
\
-blockdev
'{"node-name":"libvirt-pflash0-format","read-only":true,"driver":"raw","file":"libvirt-pflash0-storage"}'
\
-blockdev
'{"driver":"file","filename":"/var/lib/libvirt/qemu/nvram/win11_VARS.fd","node-name":"libvirt-pflash1-storage","auto-read-only":true,"discard":"unmap"}'
\
-blockdev
'{"node-name":"libvirt-pflash1-format","read-only":false,"driver":"raw","file":"libvirt-pflash1-storage"}'
\
-machine
pc-q35-7.0,usb=off,smm=off,kernel_irqchip=on,dump-guest-core=off,memory-backend=pc.ram,pflash0=libvirt-pflash0-format,pflash1=libvirt-pflash1-format
\
-accel kvm \
-cpu
Skylake-Client-noTSX-IBRS,mpx=off,vmx=on,kvm-pv-unhalt=off,kvm-pv-ipi=off,pmu=off
\
-m 8192 \
-object
'{"qom-type":"memory-backend-memfd","id":"pc.ram","share":true,"x-use-canonical-path-for-ramblock-id":false,"size":8589934592}'
\
-overcommit mem-lock=off \
-smp 8,sockets=1,dies=1,cores=8,threads=1 \
-uuid 589e17db-9ea9-49ac-8a66-c75bbc39ddd3 \
-no-user-config \
-nodefaults \
-chardev socket,id=charmonitor,fd=29,server=on,wait=off \
-mon chardev=charmonitor,id=monitor,mode=control \
-rtc base=localtime,clock=vm,driftfix=slew \
-no-shutdown \
-global ICH9-LPC.disable_s3=1 \
-global ICH9-LPC.disable_s4=1 \
-boot strict=on \
-device
'{"driver":"pcie-root-port","port":16,"chassis":1,"id":"pci.1","bus":"pcie.0","multifunction":true,"addr":"0x2"}'
\
-device
'{"driver":"pcie-root-port","port":17,"chassis":2,"id":"pci.2","bus":"pcie.0","addr":"0x2.0x1"}'
\
-device
'{"driver":"pcie-root-port","port":18,"chassis":3,"id":"pci.3","bus":"pcie.0","addr":"0x2.0x2"}'
\
-device
'{"driver":"pcie-root-port","port":19,"chassis":4,"id":"pci.4","bus":"pcie.0","addr":"0x2.0x3"}'
\
-device
'{"driver":"pcie-root-port","port":20,"chassis":5,"id":"pci.5","bus":"pcie.0","addr":"0x2.0x4"}'
\
-device
'{"driver":"pcie-root-port","port":21,"chassis":6,"id":"pci.6","bus":"pcie.0","addr":"0x2.0x5"}'
\
-device
'{"driver":"pcie-root-port","port":22,"chassis":7,"id":"pci.7","bus":"pcie.0","addr":"0x2.0x6"}'
\
-device '{"driver":"pcie-pci-bridge","id":"pci.8","bus":"pci.1","addr":"0x0"}'
\
-device
'{"driver":"pcie-root-port","port":23,"chassis":9,"id":"pci.9","bus":"pcie.0","addr":"0x2.0x7"}'
\
-device
'{"driver":"pcie-root-port","port":24,"chassis":10,"id":"pci.10","bus":"pcie.0","multifunction":true,"addr":"0x3"}'
\
-device
'{"driver":"pcie-root-port","port":25,"chassis":11,"id":"pci.11","bus":"pcie.0","addr":"0x3.0x1"}'
\
-device '{"driver":"qemu-xhci","id":"usb","bus":"pci.2","addr":"0x0"}' \
-device
'{"driver":"virtio-scsi-pci","iommu_platform":true,"packed":true,"id":"scsi0","num_queues":8,"bus":"pci.4","addr":"0x0"}'
\
-blockdev
'{"driver":"host_device","filename":"/dev/pool/win11","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"}'
\
-blockdev
'{"node-name":"libvirt-2-format","read-only":false,"driver":"raw","file":"libvirt-2-storage"}'
\
-device
'{"driver":"scsi-hd","bus":"scsi0.0","channel":0,"scsi-id":0,"lun":0,"device_id":"drive-scsi0-0-0-0","drive":"libvirt-2-format","id":"scsi0-0-0-0","bootindex":1}'
\
-blockdev
'{"driver":"file","filename":"/var/lib/libvirt/cdroms/virtio-win-0.1.225.iso","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}'
\
-blockdev
'{"node-name":"libvirt-1-format","read-only":true,"driver":"raw","file":"libvirt-1-storage"}'
\
-device
'{"driver":"ide-cd","bus":"ide.1","drive":"libvirt-1-format","id":"sata0-0-1"}'
\
-object
'{"qom-type":"input-linux","id":"input0","evdev":"/dev/input/by-id/usb-MOSART_Semi._2.4G_INPUT_DEVICE-event-kbd","repeat":true,"grab_all":true,"grab-toggle":"ctrl-ctrl"}'
\
-object
'{"qom-type":"input-linux","id":"input1","evdev":"/dev/input/by-path/platform-i8042-serio-0-event-kbd","repeat":true,"grab_all":true,"grab-toggle":"ctrl-ctrl"}'
\
-object
'{"qom-type":"input-linux","id":"input2","evdev":"/dev/input/by-path/pci-0000:00:15.0-platform-i2c_designware.0-event-mouse"}'
\
-object
'{"qom-type":"input-linux","id":"input3","evdev":"/dev/input/by-path/platform-i8042-serio-1-event-mouse"}'
\
-audiodev '{"id":"audio1","driver":"spice"}' \
-spice port=0,disable-ticketing=on,seamless-migration=on \
-device
'{"driver":"qxl-vga","id":"video0","max_outputs":1,"ram_size":67108864,"vram_size":67108864,"vram64_size_mb":0,"vgamem_mb":16,"bus":"pcie.0","addr":"0x1"}'
\
-device
'{"driver":"ich9-intel-hda","id":"sound0","bus":"pcie.0","addr":"0x1b"}' \
-device
'{"driver":"hda-duplex","id":"sound0-codec0","bus":"sound0.0","cad":0,"audiodev":"audio1"}'
\
-device
'{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.3","addr":"0x0"}' \
-device '{"driver":"vmcoreinfo"}' \
-sandbox
on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on

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