Eh, I would argue that it is more common to do KVM_REQ_GET_NESTED_STATE_PAGES
with is_guest_mode() than it is with !is_guest_mode(), as the latter is valid if
and only if eVMCS is in use. But, I think we're only vying for internet points.:-)
however the idea was to remove the call to nested_get_evmcs_page from
nested_get_vmcs12_pages, since that one is only needed after
KVM_GET_NESTED_STATE and not during VMLAUNCH/VMRESUME.
I'm confused, this patch explicitly adds a call to nested_get_evmcs_page() in
nested_get_vmcs12_pages().