Acpi Genuineintel---intel64-family-6-model-23 -

[ 0.123456] ACPI: Processor [CPU0] (acpi genuineintel---intel64-family-6-model-23)

On Linux, the acpi_cpufreq driver handles frequency scaling for this CPU. Example: acpi genuineintel---intel64-family-6-model-23

Without EPT (Extended Page Tables) – not fully present in early model 23 revisions – KVM performance suffers. Use -cpu host in QEMU carefully. acpi genuineintel---intel64-family-6-model-23