On Mon, Feb 08, 2021 at 11:18:37AM +0100, Michal Hocko wrote: > On Mon 08-02-21 10:49:18, Mike Rapoport wrote: > > From: Mike Rapoport <rppt@xxxxxxxxxxxxx> > > > > It is unsafe to allow saving of secretmem areas to the hibernation > > snapshot as they would be visible after the resume and this essentially > > will defeat the purpose of secret memory mappings. > > > > Prevent hibernation whenever there are active secret memory users. > > Does this feature need any special handling? As it is effectivelly > unevictable memory then it should behave the same as other mlock, ramfs > which should already disable hibernation as those cannot be swapped out, > no? As David already said, hibernation does not care about mlocked memory, so this feature requires a special handling. -- Sincerely yours, Mike.
