Hi all,
When booting with Hyper-V + host-passthrough it gets stuck at tianocore, does not change until I reboot which then loops into windows diagnostics which leads nowhere. Done using Windows 10, tried using newest windows version and 1909.
Specs: Manjaro Gnome 5.15 LTS, i5-12600k, z690 gigabyte aorus elite ddr4, rtx 3070ti.
I’ve spent days trying to figure out what was messing with it and it turned out I could boot when messing with my CPU topology, for some reason my 12th gen + Hyper-V + host-passthrough only works with sockets. Cores and threads above 1 causes boot problems, apart from disabling vme which boots, but the hypervisor does not load.
This fails (normal host-passthrough):
<cpu mode="host-passthrough" check="none" migratable="on">
<topology sockets="1" dies="1" cores="6" threads="2"/>
</cpu>
This boots (-can only change sockets):
<cpu mode="host-passthrough" check="none" migratable="on">
<topology sockets="12" dies="1" cores="1" threads="1"/>
</cpu>
This boots (-no hypervisor):
<cpu mode="host-passthrough" check="partial" migratable="off">
<topology sockets="1" dies="1" cores="6" threads="2"/>
<feature policy="disable" name="vme"/>
</cpu>
No matter what adjustment I do I cannot change the cores or threads or it will result in a boot failure, host-model just does not work once I boot the machine the host model changes to cooperlake.
My current way of bypassing this is I’ve downloaded the QEMU source code, gone through cpu.c and modified the default skylake-client CPU model to match my CPU, then I added in most of my i5-12600k flags manually, this seems to work with a 35-45% performance drop in CPU and in ram. Without Hyper-V enabled and using the normal host-passthrough I get near bare metal performance.
Tried with multiple versions of QEMU, EDK2, and loads of kernel versions (to add to this my i5-12600k gen does not work on kernel version 5.13 and below) even went ahead to try Ubuntu and had the same problem, my other (i7-9700k) PC works fine with Hyper-V. Also disabled my E-cores through bios resulting in the same issue. CPU pinning the P-cores to the guest does not seem to help.
Hyper-V host-passthrough XML:
<domain xmlns:qemu="http://libvirt.org/schemas/domain/qemu/1.0" type="kvm">
<name>win10-hyperv</name>
<uuid>89527fb1-3238-4d9d-8d5f-88d72323a21b</uuid>
<memory unit="KiB">8388608</memory>
<currentMemory unit="KiB">8388608</currentMemory>
<vcpu placement="static">12</vcpu>
<os>
<type arch="x86_64" machine="pc-q35-5.2">hvm</type>
<loader readonly="yes" type="pflash">/home/apex/OVMF_CODE.fd</loader>
<nvram>/home/apex/OVMF_VARS.fd</nvram>
<boot dev="hd"/>
<bootmenu enable="no"/>
<smbios mode="host"/>
</os>
<features>
<acpi/>
<apic/>
<hap state="on"/>
<hyperv mode="custom">
<relaxed state="on"/>
<vapic state="on"/>
<spinlocks state="on" retries="8191"/>
<vpindex state="on"/>
<runtime state="on"/>
<synic state="on"/>
<stimer state="on"/>
<reset state="on"/>
<vendor_id state="on" value="valent"/>
<frequencies state="on"/>
</hyperv>
<kvm>
<hidden state="on"/>
</kvm>
<vmport state="off"/>
<ioapic driver="kvm"/>
</features>
<cpu mode="host-passthrough" check="none" migratable="on">
<topology sockets="1" dies="1" cores="6" threads="2"/>
</cpu>
<clock offset="utc">
<timer name="pit" tickpolicy="delay"/>
<timer name="rtc" tickpolicy="catchup" track="guest"/>
<timer name="hpet" present="no"/>
<timer name="tsc" present="yes" mode="native"/>
<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/apex/bin/qemu-system-x86_64</emulator>
<disk type="block" device="disk">
<driver name="qemu" type="raw" cache="none" io="native" discard="ignore"/>
<source dev="/dev/sdb"/>
<target dev="sdb" bus="sata"/>
<serial>F138F881</serial>
<boot order="1"/>
<address type="drive" controller="0" bus="0" target="0" unit="1"/>
</disk>
<controller type="usb" index="0" model="qemu-xhci" ports="15">
<address type="pci" domain="0x0000" bus="0x01" slot="0x00" function="0x0"/>
</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="0x8"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x0" multifunction="on"/>
</controller>
<controller type="pci" index="2" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="2" port="0x9"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x1"/>
</controller>
<controller type="pci" index="3" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="3" port="0xa"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x2"/>
</controller>
<controller type="pci" index="4" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="4" port="0xb"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x3"/>
</controller>
<controller type="pci" index="5" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="5" port="0xc"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x4"/>
</controller>
<controller type="pci" index="6" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="6" port="0xd"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x5"/>
</controller>
<controller type="pci" index="7" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="7" port="0xe"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x6"/>
</controller>
<controller type="pci" index="8" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="8" port="0xf"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x01" function="0x7"/>
</controller>
<controller type="pci" index="9" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="9" port="0x10"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x0" multifunction="on"/>
</controller>
<controller type="pci" index="10" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="10" port="0x11"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x1"/>
</controller>
<controller type="pci" index="11" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="11" port="0x12"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x2"/>
</controller>
<controller type="pci" index="12" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="12" port="0x13"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x3"/>
</controller>
<controller type="pci" index="13" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="13" port="0x14"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x4"/>
</controller>
<controller type="pci" index="14" model="pcie-root-port">
<model name="pcie-root-port"/>
<target chassis="14" port="0x15"/>
<address type="pci" domain="0x0000" bus="0x00" slot="0x02" function="0x5"/>
</controller>
<controller type="sata" index="0">
<address type="pci" domain="0x0000" bus="0x00" slot="0x1f" function="0x2"/>
</controller>
<input type="mouse" bus="ps2"/>
<input type="keyboard" bus="ps2"/>
<audio id="1" type="none"/>
<hostdev mode="subsystem" type="pci" managed="yes">
<source>
<address domain="0x0000" bus="0x01" slot="0x00" function="0x0"/>
</source>
<address type="pci" domain="0x0000" bus="0x03" slot="0x00" function="0x0"/>
</hostdev>
<hostdev mode="subsystem" type="pci" managed="yes">
<source>
<address domain="0x0000" bus="0x01" slot="0x00" function="0x1"/>
</source>
<address type="pci" domain="0x0000" bus="0x04" slot="0x00" function="0x0"/>
</hostdev>
<memballoon model="virtio">
<address type="pci" domain="0x0000" bus="0x02" slot="0x00" function="0x0"/>
</memballoon>
</devices>
<qemu:commandline>
<qemu:arg value="-smbios"/>
<qemu:arg value="type=17,manufacturer=Samsung"/>
<qemu:arg value="-smbios"/>
<qemu:arg value="type=4,manufacturer=Intel(R) Corporation,version=Intel(R) Core(TM) i5-12600K CPU @ 3.70GHz"/>
<qemu:arg value="-object"/>
<qemu:arg value="input-linux,id=kbd1,evdev=/dev/input/by-id/usb-Corsair_Corsair_Gaming_K95_RGB_PLATINUM_Keyboard_1601902CAF7898E05F119ED5F5001BC0-event-kbd,grab_all=on,repeat=on"/>
<qemu:arg value="-object"/>
<qemu:arg value="input-linux,id=mouse1,evdev=/dev/input/by-id/usb-Corsair_Corsair_Gaming_K95_RGB_PLATINUM_Keyboard_1601902CAF7898E05F119ED5F5001BC0-event-mouse"/>
<qemu:arg value="-object"/>
<qemu:arg value="input-linux,id=mouse2,evdev=/dev/input/by-id/usb-Razer_Razer_DeathAdder_V2-event-mouse"/>
<qemu:arg value="-object"/>
<qemu:arg value="input-linux,id=kbd2,evdev=/dev/input/by-id/usb-Razer_Razer_DeathAdder_V2-if01-event-kbd,grab_all=on,repeat=on"/>
<qemu:arg value="-object"/>
<qemu:arg value="input-linux,id=kbd3,evdev=/dev/input/by-id/usb-Razer_Razer_DeathAdder_V2-if02-event-kbd,grab_all=on,repeat=on"/>
</qemu:commandline>
</domain>
@wendell hey
Many thanks, any help is greatly appreciated!