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+graphic: 0.952
+boot: 0.918
+performance: 0.916
+files: 0.904
+device: 0.903
+vnc: 0.871
+PID: 0.847
+network: 0.832
+other: 0.788
+permissions: 0.772
+semantic: 0.752
+socket: 0.734
+KVM: 0.645
+debug: 0.581
+
+kernel panic using hvf with CPU passthrough
+
+Host Details
+QEMU 5.1 (Homebrew)
+macOS 10.15.6 Catalina
+Late 2014 model
+i5-4690 @ 3.5 GHz
+8 GB RAM
+
+Guest Details
+Ubuntu Desktop 20.04.1 Installer ISO
+
+Problem
+Whenever I boot with "-accel hvf -cpu host", the Ubuntu desktop installer will immediately crash with a kernel panic after the initial splash screen.
+See the attached picture of the kernel panic for more details.
+
+Steps to recreate
+From https://www.jwillikers.com/posts/virtualize_ubuntu_desktop_on_macos_with_qemu/
+
+1. Install QEMU with Homebrew.
+$ brew install qemu
+
+2. Create a qcow2 disk image to which to install.
+$ qemu-img create -f qcow2 ubuntu2004.qcow2 60G
+
+3. Download the ISO.
+$ curl -L -o ubuntu-20.04.1-desktop-amd64.iso https://releases.ubuntu.com/20.04/ubuntu-20.04.1-desktop-amd64.iso
+
+4. Run the installer in QEMU.
+$ qemu-system-x86_64 \
+  -accel hvf \
+  -cpu host \
+  -smp 2 \
+  -m 4G \
+  -usb \
+  -device usb-tablet \
+  -vga virtio \
+  -display default,show-cursor=on \
+  -device virtio-net,netdev=vmnic -netdev user,id=vmnic \
+  -audiodev coreaudio,id=snd0 \
+  -device ich9-intel-hda -device hda-output,audiodev=snd0 \
+  -cdrom ubuntu-20.04.1-desktop-amd64.iso \
+  -drive file=ubuntu2004.qcow2,if=virtio
+
+Workaround
+Emulating the CPU with "-cpu qemu64" does not result in a kernel panic.
+
+
+
+0f 01 f9 is RDTSCP; use -cpu host,-rdtscp to mask out the feature. KVM couldn't pass the feature through for a while, and HVF currently can't, though HVF should be modified to automatically hide the feature until it can emulate it.
+
+Thanks for the response Jessica! The option you provided fixes the problem and everything works flawlessly now. Thank you!!
+
+Fixed in commit 65baabca22366e5246955474228908d6a8354881
+