diff --git a/arch/x86/hyperv/hv_vtl.c b/arch/x86/hyperv/hv_vtl.c index 1e2f5b3ea772..07fac3d687c3 100644 --- a/arch/x86/hyperv/hv_vtl.c +++ b/arch/x86/hyperv/hv_vtl.c @@ -274,7 +274,15 @@ int __init hv_vtl_early_init(void) panic("XSAVE has to be disabled as it is not supported by this module.\n" "Please add 'noxsave' to the kernel command line.\n"); - apic_update_callback(wakeup_secondary_cpu_64, hv_vtl_wakeup_secondary_cpu); + /* + * TDX confidential VMs do not trust the hypervisor and cannot use it to + * boot secondary CPUs. Instead, they will be booted using the wakeup + * mailbox if detected during boot. See setup_arch(). + * + * There is no paravisor present if we are here. + */ + if (!hv_isolation_type_tdx()) + apic_update_callback(wakeup_secondary_cpu_64, hv_vtl_wakeup_secondary_cpu); return 0; }