id = 2834
title = "qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.intel-pt [bit 25]"
state = "opened"
created_at = "2025-02-23T06:18:59.616Z"
closed_at = "n/a"
labels = ["target: i386"]
url = "https://gitlab.com/qemu-project/qemu/-/issues/2834"
host-os = "ubuntu20.04"
host-arch = "x86"
qemu-version = "QEMU emulator version 8.2.9"
guest-os = "ubuntu20.04"
guest-arch = "x86"
description = """when run `./qemu-system-x86_64  -cpu host,intel_pt  -m 8192M -smp 4 -hda  ubuntu.qcow2  --enable-kvm --nographic` warning `qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.07H:EBX.intel-pt [bit 25]`.
Tried adding level/min-level=0x14, but still received a warning."""
reproduce = """run command 
```
./qemu-system-x86_64  -cpu host,intel_pt  -m 8192M -smp 4 -hda  ubuntu.qcow2  --enable-kvm --nographic
```"""
additional = """- CPU i5-13600kf
```
~$ sudo rdmsr 0x485 -f 14:14 # MSR_IA32_VMX_MISC_INTEL_PT
1
~$ sudo rdmsr 0x48B -f 56:56 # SECONDARY_EXEC_PT_USE_GPA
1
~$ sudo rdmsr 0x484 -f 50:50 # VM_ENTRY_LOAD_IA32_RTIT_CTL
1
```"""