Flexible Return News Today

The recently released Linux 6.9 kernel brings several significant updates and improvements. Here are the most important ones.

Ahead of the Linux 6.9-rc5 test kernel being released later today, this week's batch of 'x86/urgent' fixes were sent out this morning.

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.

Depending upon how Linus Torvalds is feeling today, Linux 6.8 could debut today as stable and in turn mark the opening of the Linux 6.9 merge window..

For the better part of two years we've seen Intel open-source software engineers working on preparing the Linux kernel for FRED, the Flexible Return and Event Delivery for defining new transitions for changing privilege levels

Since last year Intel Linux engineers have been busy working on FRED support for the Flexible Return and Event Delivery specification that will be found with future-generation processors

The GNU Assembler 'Gas' as part of the GNU Binutils collection has landed support for Intel FRED and LKGS instructions.

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At some point, the house of cards begins to topple over. It’s no secret that the x86 processor architecture is almost aged enough to collect a pension. It is, not to put too fine a point on it, a creaking old bit of wheezing ironmongery that, had the gods of microprocessor architecture been more generous,…