Ignat Korchagin, Cloudflare
Cloudflare operates a large distributed network: we have more than 165 data centres across 75 countries. We recently decided to integrate a second CPU architecture into our infrastructure. The obvious choice was ARM64. Apart from doing the basic hardware bring up we also needed to port all our software stack to ARM64, which includes a lot of in-house and third-party open-source components. Turns out, even if the software is written in a cross-platform architecture-agnostic language, there are a lot of potential ways it can fail on a different architecture. This presentation describes the issues we encountered, when porting our software to ARM64 and provides some advice for developers and SRE on how to avoid them, when adopting new code.
Ignat Korchagin, Cloudflare
Ignat Korchagin is a security engineer at Cloudflare working mostly on platform and hardware security. Ignat’s interests are cryptography, hacking, and low-level programming. Before Cloudflare, Ignat worked as a senior security engineer for Samsung Electronics’ Mobile Communications Division.
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author = {Ignat Korchagin},
title = {The Definitive Guide to Make Software Fail on {ARM64}},
year = {2019},
address = {Singapore},
publisher = {USENIX Association},
month = jun
}