What were you trying to do that didn't work?

When booting a TDX guest, qemu outputs,

qemu-kvm: TDX requires guest CPU physical bits (48) to match host CPU physical bits (52)

qemu-kvm: kvm_init_vcpu: kvm_arch_init_vcpu failed (0): Invalid argument

What is the impact of this issue to you?

TDX guest can't boot

Please provide the package NVR for which the bug is seen:

qemu-kvm-10.1.0-9.el10

How reproducible is this bug?:

100%

Steps to reproduce

1. Boot a tdx guestqemu-kvm: TDX requires guest CPU physical bits (48) to match host CPU physical bits (52)

qemu-kvm: kvm_init_vcpu: kvm_arch_init_vcpu failed (0): Invalid argument

Expected results

TDx geust can boot up

Actual results

TDX guest can't boot