Re: [PATCH v2 1/2] userfaultfd: Fix checks for huge PMDs

On Tue, Aug 13, 2024 at 10:37 PM David Hildenbrand david@redhat.com wrote:

On 13.08.24 22:25, Jann Horn wrote:

...

•         if (unlikely(!pmd_present(dst_pmdval) || pmd_trans_huge(dst_pmdval) ||
  

•                      pmd_devmap(dst_pmdval))) {
  

Likely in the future we should turn the latter part into a "pmd_leaf()" check.

Yeah, it'd be a good idea to refactor that as a followup.