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16-17 June, 2026
Mumbai, India
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Note: The schedule is subject to change.

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IMPORTANT NOTE: Timing of sessions and room locations are subject to change.


Wednesday June 17, 2026 4:25pm - 5:05pm IST
FRED (Flexible Return and Event Delivery) represents a modernization of x86 processor event handling, replacing the decades-old IDT (Interrupt Descriptor Table) mechanism and eliminating its inherent design flaws. This advancement introduces new low-latency ring transitions that establish complete supervisor or user context. FRED uses stack-based event delivery with integrated event data and introduces dedicated ERETU and ERETS return instructions.

These enhancements resolve longstanding issues related to atomicity, consistency, and nested exception handling in x86 architecture. This results in faster, more reliable and robust event processing through simplified system software and reduced attack surface.

The talk will start with a look at traditional IDT event delivery and the issues it creates. Then, we’ll dive into the FRED overview, covering briefly its terminology, design, and core mechanisms. To wrap up, we’ll touch advanced topics like virtualization and GS segment handling, highlighting why FRED is a major leap forward for modern x86 architecture.
Speakers
avatar for Shivansh Dhiman

Shivansh Dhiman

Linux Kernel Engineer, AMD India, AMD India
I'm a Linux Kernel Engineer at AMD India, specializing in KVM virtualization for x86 systems. I focus on hypervisor optimizations, hardware-assisted virtualization features, and modern x86 innovations including FRED. Fresh from IIT Bombay, I believe understanding the "why" behind... Read More →
Wednesday June 17, 2026 4:25pm - 5:05pm IST
Lotus 3 (Third Floor)
  Linux
  • Audience Experience Level Any

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