Meet FRED: The Future Face of X86 Event Processing
Talkat Open Source Summit India 2026 · on Wednesday, 2026-06-17· at 16:25· Lotus Ballroom 3 (Level 3)·
summary
Claims a hardware redesign that replaces the IDT with a single MSR entry and a uniform stack frame that carries an event data field and vector/type tags, adds four stack levels to avoid NMI/MCE stack corruption, and exposes atomic return instructions ERETU and ERETS that restore RSP/GS atomically. Linux has FRED support since 6.9; virtualization MSR save/restore and VMCB fields are proposed but still under review. Performance improvements are promised but not quantified.
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chapters (6)
- 0:00FRED introduction and motivation
- 6:24What is FRED
- 9:54Legacy interrupt delivery problems
- 13:50FRED stack corruption fix
- 17:03Legacy security risks
- 18:53FRED virtualization status
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