Commit 84cffe499b941 ("kvm: Emulate MOVBE") implies that MOVBE emulation can be requested with "qemu -cpu ...+movbe..." However, when I try invoking qemu with "-cpu host,+movbe,+vmx", I get: qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.movbe [bit 22] I ask because I'm trying to add a kvm-unit-test that makes use of this functionality.