Post Syndicated from original https://lwn.net/Articles/926649/

Support for shadow stacks on the x86 architecture has been long in coming;
LWN first covered this work in 2018. After
five years and numerous versions, though, it would appear that
user-space shadow stacks on x86 might just be supported in the 6.4 kernel
release. Getting there has required a few changes since we last caught up with this work in early 2022.