Skip to content

kvm-asyncpf-int is not supported by qemu

Host environment

  • Operating system: CentOS Stream release 9
  • OS/kernel version: 5.14.0-362.el9s.x86_64
  • Architecture: x86
  • QEMU flavor: qemu-system-x86_64(/usr/libexec/qemu-kvm)
  • QEMU version: qemu-kvm-8.0.0-14.el9s
  • QEMU command line:
    /usr/libexec/qemu-kvm \
         -accel kvm \
         -m 64G -smp 64 \
         -name process=tdxvm,debug-threads=on \
         -cpu host \
         -object tdx-guest,id=tdx \
         -machine q35,hpet=off,kernel_irqchip=split,memory-encryption=tdx,memory-backend=ram1 \
         -object memory-backend-ram,id=ram1,size=64G,private=on \
         -nographic -vga none \
         -chardev stdio,id=mux,mux=on,signal=off -device virtio-serial -device virtconsole,chardev=mux \
         -bios /usr/share/edk2/ovmf/OVMF.inteltdx.fd \
         -serial chardev:mux \
         -nodefaults \
         -device virtio-net-pci,netdev=nic0 -netdev user,id=nic0,hostfwd=tcp::10022-:22 \
         -drive file=/home/tdx/centos9.qcow2,if=none,id=virtio-disk0 \
         -device virtio-blk-pci,drive=virtio-disk0 \
    

Emulated/Virtualized environment

  • Operating system: CentOS Stream release 9
  • OS/kernel version: 5.14.0-362.el9s.x86_64
  • Architecture: x86

Description of problem

When execute above qemu command to boot TD guest, below error occurred, but will not block guest boot up.

qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.40000001H:EAX.kvm-asyncpf-int [bit 14]

qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.40000001H:EAX.kvm-asyncpf-int [bit 14] ...

Edited by fanchen2