Overview
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Explore the implementation of big-endian support for RISC-V Linux systems in this 42-minute conference talk from the Linux Foundation. Learn about the latest RISC-V ISA specification that enables runtime configuration of data endianness between little and big-endian formats. Discover the challenges and solutions involved in creating a prototype Linux implementation running in big-endian mode on emulated RISC-V systems using QEMU. Examine the necessary modifications to critical software components including the Linux kernel, QEMU, and OpenSBI, while understanding the specific issues encountered and their corresponding fixes. Gain insights into KVM functionality with mixed endian instances and the required modifications to kvmtool for proper operation. Review the project outcomes, published results, and ongoing efforts to test and resolve remaining issues in big-endian RISC-V Linux implementation.
Syllabus
The Big-endian RISC-V Linux Adventure - Ben Dooks, Codethink
Taught by
Linux Foundation