I have tried to run the OS and I can confirm that some instructions that require VMEXIT are not implemented. In your case that's 0F7F or MOVQ (mem from mmxreg) from MMX. In my case that's 0F11 or MOVUPS(xmmreg1 to mem) from SSE.
I'd recommend you to run -cpu host,-mmx,-sse for a while, but the kernel of the OS explicitly complains that it won't run on CPUs without SSE support. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1798451 Title: HVF linux on OSX hangs 2nd time started after adding socket Status in QEMU: New Bug description: Robs-MacBook-Pro-2:~ robmaskell$ qemu-system-x86_64 --version QEMU emulator version 3.0.0 Host: MacOS - 10.13.6 Model Name: MacBook Pro Model Identifier: MacBookPro14,3 Processor Name: Intel Core i7 Processor Speed: 2.8 GHz Number of Processors: 1 Total Number of Cores: 4 L2 Cache (per Core): 256 KB L3 Cache: 6 MB Memory: 16 GB Guest OS: Elementary Linux Loki 0.4.1, patched up to date Command used to start QEMU: qemu-system-x86_64 \ -name ElementaryLokiDev \ -machine pc,accel=hvf \ -cpu max \ -smp cpus=2,sockets=2,cores=1,threads=1,maxcpus=2 \ -numa node,nodeid=0 \ -numa cpu,node-id=0,socket-id=0 -numa cpu,node-id=0,socket-id=1 \ -m 8G \ -vga vmware \ -hda e4.qcow2 Symptoms: Started without the -smp / -numa commands to install the OS, then added -smp / -numa and the machine boots and lscpu reports extra cpu as expected. Restart VM and it hangs on startup. Remove -smp / -numa and machine starts again. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1798451/+subscriptions