That's the CPUID output from the host, which doesn't really tell me what I need to know. Thank you, though, for providing the CPUID output from a kvm guest in a private thread.
It appears that kvm reports inconsistent CPUID information with '-cpu host' if the host supports XSAVE. Though kvm reports XSAVE support, it hides CPUID leaf 0xD, which contains information on how to use XSAVE. As a result, ESXi tries to use XSAVE incorrectly, and the CPU raises a #GP fault. This leads to a PSOD.
The workaround, for the present, is to hide XSAVE from the ESXi guest. This can be done with '-cpu host,-xsave'.
The full command line is:
qemu-system-x86_64 -enable-kvm -cpu host,-xsave -machine vmport=off -m 4096 -smp 2 -hda esxi00.img -netdev tap,helper=/usr/lib/qemu-bridge-helper,id=hostnet0 -device vmxnet3,netdev=hostnet0,id=net0 -cdrom VMware-VMvisor-Installer-6.0.0.update01-3029758.x86_64.iso