Windows VM causes code 43 when HyperV is enabled

bgiggle

New Member
Feb 28, 2023
3
0
1
Hey Everyone

Everything seems to work perfectly before enabling hyperV; however, I am having issues after I enable HyperV on my Windows VM, I am no longer able to passthrough my GPU without getting a code 43. Any help would be massively appreciated.

VM config:

Code:
bios: ovmf
boot: order=ide0;ide2;net0
cores: 16
cpu: host
efidisk0: local-lvm:vm-100-disk-0,efitype=4m,pre-enrolled-keys=1,size=4M
hostpci0: 0000:0a:00,pcie=1,rombar=0
ide0: nvme00:100/vm-100-disk-0.qcow2,size=100G
ide2: local:iso/Win11_22H2_EnglishInternational_x64v1.iso,media=cdrom,size=5418024K
machine: pc-q35-7.2
memory: 24576
meta: creation-qemu=7.2.0,ctime=1681941507
name: Test2
net0: e1000=42:4B:CE:71:E7:9F,bridge=vmbr0,firewall=1
numa: 0
ostype: win11
scsihw: virtio-scsi-single
smbios1: uuid=1b04cdc4-4a06-4af4-a6d9-fe7bb473932c
sockets: 1
tpmstate0: local-lvm:vm-100-disk-1,size=4M,version=v2.0
vmgenid: 0506a187-7c0f-41e8-8fe0-dfd4120d97f0

Output of
Code:
cat /sys/module/kvm_amd/parameters/nested
is 1

Code:
GRUB_CMDLINE_LINUX_DEFAULT="quiet initcall_blacklist=sysfb_init pcie_acs_override=downstream"
 
Last edited:

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