Because it's fixed1 bit that enforced by TDX module. Signed-off-by: Xiaoyao Li <xiaoyao.li@xxxxxxxxx> --- target/i386/kvm/tdx.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 05475edf72bd..4cb1f4ac3479 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -430,6 +430,9 @@ static void tdx_cpu_instance_init(X86ConfidentialGuest *cg, CPUState *cpu) object_property_set_bool(OBJECT(cpu), "pmu", false, &error_abort); + /* invtsc is fixed1 for TD guest */ + object_property_set_bool(OBJECT(cpu), "invtsc", true, &error_abort); + x86cpu->enable_cpuid_0x1f = true; } -- 2.34.1