[$] A page-table isolation update

Post Syndicated from corbet original https://lwn.net/Articles/752621/rss

Dave Hansen did much of the work to get kernel page-table isolation
(PTI) into the kernel in response to the Meltdown CPU vulnerability. In the
memory-management track of the
2018 Linux Storage, Filesystem, and Memory-Management Summit, he ran a
discussion on how PTI came about, what the costs are, and what can be done
to minimize its performance impact.