Does it make sense to move RET_PF_* to common code, and avoid a boolAfter this series, probably? Especially if/when we make "struct kvm_page_fault"
argument here?
a common structure and converge all arch code. In this series, definitely not,
as it would require even more patches to convert other architectures, and it's
not clear that it would be a net win, at least not without even more massaging.