Intel FRED Merged For Linux 6.9 As An Important Improvement With Future CPUs

[phoronix]

Phoronix: Intel FRED Merged For Linux 6.9 As An Important Improvement With Future CPUs

After two years of talking about Intel FRED as Flexible Return and Event Delivery for overhauling how transitions are done between privilege levels (CPU rings), the support code was finally in good shape for merging now with the Linux 6.9 kernel...

https://www.phoronix.com/news/Intel-FRED-Merged-Linux-6.9

[PluMGMK]

I find it funny that point 5 requires such a major overhaul to address, when it was probably just an implementation bug to begin with, and I can't imagine it having any usefulness for backwards compatibility. It just causes headaches, even now…