kernel: 0.979 graphic: 0.959 x86: 0.949 device: 0.927 KVM: 0.898 semantic: 0.849 architecture: 0.822 boot: 0.800 TCG: 0.771 debug: 0.744 user-level: 0.730 ppc: 0.728 PID: 0.721 VMM: 0.700 i386: 0.676 performance: 0.675 vnc: 0.655 network: 0.644 register: 0.619 permissions: 0.617 hypervisor: 0.609 mistranslation: 0.483 arm: 0.482 risc-v: 0.447 files: 0.434 virtual: 0.409 socket: 0.340 peripherals: 0.328 assembly: 0.202 CPUID.07H:EBX.intel-pt not supported warning info shown in terminal when start guest with -cpu qemu64,+intel-pt Description of problem: When launch guest with qemu-system-x86_64 with parameter -cpu host,+intel-pt, it will show warning info in terminal : qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.intel-pt [bit 25] 'intel_pt' can not be found in guest's CPU flag. While host already support intel_pt. Steps to reproduce: 1. Run the above QEMU command. Additional information: This issue was observed with kernel 5.13 qemu-system-x86_64 -accel kvm -m 4096 -smp 4 -cpu host,+intel-pt,min-level=0x14 qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.intel-pt [bit 25] qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.intel-pt [bit 25] qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.intel-pt [bit 25] qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.intel-pt [bit 25]