On Sun, Oct 27, 2019 at 12:17:32PM +0200, Mike Rapoport wrote: > From: Mike Rapoport <rppt@xxxxxxxxxxxxx> > > The mappings created with MAP_EXCLUSIVE are visible only in the context of > the owning process and can be used by applications to store secret > information that will not be visible not only to other processes but to the > kernel as well. > > The pages in these mappings are removed from the kernel direct map and > marked with PG_user_exclusive flag. When the exclusive area is unmapped, > the pages are mapped back into the direct map. I probably blind, but I don't see where you manipulate direct map... -- Kirill A. Shutemov
