https://bugzilla.kernel.org/show_bug.cgi?id=199103 Bug ID: 199103 Summary: Resource control is not supported on this host Product: Virtualization Version: unspecified Kernel Version: 4.15.4 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: 15700157322@xxxxxxx Regression: No Libvirt release V4.1.0 at 2018-3-5, And it add a element is <cachetune> can use host cache, But when i set this. my ubuntu tell me 'Resource control is not supported on this host'. Then my kvm-guest also cannot running. -- You are receiving this mail because: You are watching the assignee of the bug.