KVM: X86: Skip allocating pae_root for vcpu->arch.guest_mmu when !tdp_enabled

It is never used.

Signed-off-by: Lai Jiangshan <laijs@linux.alibaba.com>
Message-Id: <20211118110814.2568-11-jiangshanlai@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
1 file changed