On Thu, 31 May 2018, Andrew Morton wrote: > On Thu, 31 May 2018 16:56:02 +0300 "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> wrote: > > > shmem/tmpfs uses pseudo vma to allocate page with correct NUMA policy. > > > > The pseudo vma doesn't have vm_page_prot set. We are going to encode > > encryption KeyID in vm_page_prot. Having garbage there causes problems. > > > > Zero out all unused fields in the pseudo vma. > > > > So there are no known problems in the current mainline kernel? Correct - if we limit ourselves to the area of the shmem pseudo-vma :) Hugh