[0/4] x86/mm: XSA-299 / 309 / 310 follow-up

Message

Jan Beulich Dec. 20, 2019, 2:16 p.m. UTC

Addressing a few assorted aspects I've noticed during the
investigations / reviews.

1: mod_l<N>_entry() have no need to use __copy_from_user()
2: rename and tidy create_pae_xen_mappings()
3: avoid IOMMU operations in more cases in _get_page_type()
4: drop redundant smp_wmb() from _put_final_page_type()

Jan