KVM doesn't allow wirting to MSR_IA32_APICBASE for TDs. Signed-off-by: Xiaoyao Li <xiaoyao.li@xxxxxxxxx> --- target/i386/kvm/kvm.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 9c5bf075b542..4d520d0e34bd 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -2907,6 +2907,11 @@ void kvm_put_apicbase(X86CPU *cpu, uint64_t value) { int ret; + /* TODO: Allow accessing guest state for debug TDs. */ + if (is_tdx_vm()) { + return; + } + ret = kvm_put_one_msr(cpu, MSR_IA32_APICBASE, value); assert(ret == 1); } -- 2.27.0