Do you mean below reply?
"I think use of kvm_gfn_stolen_mask() should be minimized anyway. I
would rename it to to kvm_{gfn,gpa}_private_mask and not return bool."
I also mean we should not use kvm_gfn_stolen_mask(). I don't have opinion on
the new name. Perhaps kvm_is_protected_vm() is my preference though.