[$] Memory encryption issues

"People think that memory encryption sounds really cool; it will make my
system more secure so I want it". At least, that is how Dave Hansen
characterized the situation at the beginning of a session on the topic
during the memory-management track at the 2019 Linux Storage, Filesystem,
and Memory-Management Summit. This session, also led by Kirill Shutemov,
covered a number of aspects of the memory-encryption problem on Intel
processors and beyond. One clear outcome of the discussion was also raised
by Hansen at the beginning: users of memory encryption need to think hard
about where that extra security is actually coming from.