On Mon, Oct 10, 2016 at 07:43:38PM +0300, Aleksei wrote:

Hi,

I have a Windows 7 SP1 Pro 64-bit VM which works fine on libvirt 2.3.0 and Qemu 2.7.0.

If I enable HyperV features (https://libvirt.org/formatdomain.html#elementsFeatures) like "relaxed", "spinlocks" etc - VM doesn't boot. "Starting Windows" text appears for ~2 seconds (no flying dots, no logo) and then it just goes to black screen. If I switch HyperV features back off, it boots normally again.

Running VM with debuggging enabled (virsh --log win7_hyperv.log --debug 1 start win7) doesn't produce any errors in the log. There are no logs

This is just a debugging of virsh, that won't help. You need to look for /var/log/libvirt/qemu/some_domain_name.log, but I still don't think you'll find anything there. I think it might be more on point to ask on qemu-devel, because that's more qemu-related.

for that attempted boot in the guest either - apparently it doesn't get to the point when Windows starts logging.

Attaching VM xml definition (with HyperV features enabled).

-- /--Regards, Aleksei/

<!-- WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE OVERWRITTEN AND LOST. Changes to this xml configuration should be made using: virsh edit win7 or other application using the libvirt API. -->

<domain type='kvm'> <name>win7</name> <uuid>XXXXXXXX-XXXXX-XXXXX-XXXX-XXXXXXXXXXXXX</uuid> <title>win7</title> <memory unit='KiB'>4194304</memory> <currentMemory unit='KiB'>4194304</currentMemory> <vcpu placement='static'>2</vcpu> <cputune> <vcpupin vcpu='0' cpuset='2'/> <vcpupin vcpu='1' cpuset='3'/> </cputune> <sysinfo type='smbios'> <bios> <entry name='vendor'>Vendor Inc.</entry> <entry name='version'>V56</entry> <entry name='date'>02/01/2015</entry> <entry name='release'>48.11</entry> </bios> <system> <entry name='manufacturer'>Vendor Inc.</entry> <entry name='product'>Laptop XYZ</entry> <entry name='version'>Not Specified</entry> <entry name='serial'>772812F</entry> <entry name='sku'>301A</entry> <entry name='family'>Not Specified</entry> </system> <baseBoard> <entry name='manufacturer'>Vendor Inc.</entry> <entry name='product'>1DNVPA</entry> <entry name='version'>F07</entry> <entry name='serial'>/772812F/CN1111111111F/</entry> <entry name='asset'>Not Specified</entry> <entry name='location'>Not Specified</entry> </baseBoard> </sysinfo> <os> <type arch='x86_64' machine='pc-q35-2.7'>hvm</type> <loader readonly='yes' type='pflash'>/vms/UEFI_OVMF_win7/OVMF_CODE.fd</loader> <nvram>/home/username/.config/libvirt/qemu/nvram/win7_VARS.fd</nvram> <acpi> <table type='slic'>/vms/win7/acpi_slic.bin</table> </acpi> <boot dev='hd'/> <smbios mode='sysinfo'/> </os> <features> <acpi/> <apic/> <hyperv> <relaxed state='on'/> <vapic state='on'/> <spinlocks state='on' retries='4096'/> <vpindex state='on'/> <runtime state='on'/> <synic state='on'/> <stimer state='on'/> <reset state='on'/> <vendor_id state='on' value='KVM Hv'/> </hyperv> <kvm> <hidden state='off'/> </kvm> <pvspinlock state='on'/> <vmport state='off'/> </features> <cpu mode='host-model'> <model fallback='allow'/> </cpu> <clock offset='utc'> <timer name='rtc' tickpolicy='catchup'/> <timer name='pit' tickpolicy='delay'/> <timer name='hpet' present='no'/> <timer name='hypervclock' present='no'/> </clock> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <pm> <suspend-to-mem enabled='no'/> <suspend-to-disk enabled='no'/> </pm> <devices> <emulator>/usr/bin/qemu-system-x86_64</emulator> <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='none'/> <source file='/vms/w7_efi.qcow2'/> <target dev='vda' bus='virtio'/> <serial>Z1119192032</serial> <address type='pci' domain='0x0000' bus='0x02' slot='0x02' function='0x0'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <source file='/vms/virtio-win-0.1.126.iso'/> <target dev='sda' bus='sata'/> <readonly/> <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> <controller type='pci' index='0' model='pcie-root'/> <controller type='pci' index='1' 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='2' model='pci-bridge'> <model name='pci-bridge'/> <target chassisNr='2'/> <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/> </controller> <controller type='virtio-serial' index='0'> <address type='pci' domain='0x0000' bus='0x02' slot='0x01' function='0x0'/> </controller> <controller type='sata' index='0'> <address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/> </controller> <controller type='usb' index='0' model='piix3-uhci'> <address type='pci' domain='0x0000' bus='0x02' slot='0x09' function='0x0'/> </controller> <interface type='bridge'> <mac address='52:54:00:00:00:00'/> <source bridge='bridge0'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x02' slot='0x08' function='0x0'/> </interface> <serial type='pty'> <target port='0'/> </serial> <console type='pty'> <target type='serial' port='0'/> </console> <channel type='spicevmc'> <target type='virtio' name='com.redhat.spice.0'/> <address type='virtio-serial' controller='0' bus='0' port='1'/> </channel> <input type='keyboard' bus='virtio'> <address type='pci' domain='0x0000' bus='0x02' slot='0x04' function='0x0'/> </input> <input type='tablet' bus='virtio'> <address type='pci' domain='0x0000' bus='0x02' slot='0x05' function='0x0'/> </input> <input type='mouse' bus='ps2'/> <input type='keyboard' bus='ps2'/> <graphics type='spice'> <listen type='socket'/> </graphics> <sound model='ich9'> <address type='pci' domain='0x0000' bus='0x02' slot='0x0a' function='0x0'/> </sound> <video> <model type='qxl' ram='65536' vram='65536' vgamem='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='0x03' function='0x0'/> </memballoon> <rng model='virtio'> <backend model='random'>/dev/random</backend> <address type='pci' domain='0x0000' bus='0x02' slot='0x0b' function='0x0'/> </rng> <panic model='isa'> <address type='isa' iobase='0x505'/> </panic> </devices> </domain>

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