I am studying the set of the access bit in the QEMU page table when running a virtual machine on KVM.

In order to know if the CPU sets the access bit to 1 on QEMU page table, I wanted to answer the questions: Is the QEMU page table accessed when a vCPU is being scheduled?

So my question is : do we use the QEMU page table beside the EPT when accessing a page in the virtual machine or not? If not, when is each of the two page tables used?