That's actually an interesting accidental point. How many embedded CPU's with speculation might be affected? You may say "none" but there are Cortex CPUs embed

That's actually an interesting accidental point. How many embedded CPU's with speculation might be affected? You may say "none" but there are Cortex CPUs embedded into FPGAs (either directly or form of IP cores). What if enterprise routers have them? What if TVs have them? I know many Cortex's aren't affected. The point is, anything that needs a "fast enough" CPU to benefit from OoO scheduling is possibly at risk, right? So while most embedded devices use cheaper, less complex CPUs, there are plenty that don't--as more powerful CPUs (which offer speculation) are becoming cheaper and cheaper. A Raspberry Pi 3 has a Cortex-A53 (because they're cheap). They're luckily not affected, but those CPUs and faster are cheap enough to throw onto a $35 retail price computer. What's running in your $800 internet-connected 4K TV? Per the Pi 3 explaination page: >Examples of out-of-order processors include the Intel Pentium 2 (and most subsequent Intel and AMD x86 processors with the exception of some Atom and Quark devices), and many recent ARM cores, including Cortex-A9, -A15, -A17, and -A57. https://www.raspberrypi.org/blog/why-raspberry-pi-isnt-vulnerable-to-spectre-or-meltdown/ https://www.raspberrypi.org/blog/why-raspberry-pi-isnt-vulne... The A9, 15, 17, and A57 are all affected and used across TONS of devices in the world. They're very popular not just in chip form (as the primary CPU), but also in IP cores (inside an FPGA), as well as "secondary CPU" systems attached to FPGAs or other CPU's. And that's just one brand of one type of CPU. Who knows what else is out there. PowerPCs are in everything. Even your dust-covered Gamecube has out-of-order speculation! Here's a link mentioning that PowerPC CPUs are affected: http://tenfourfox.blogspot.com/2018/01/is-powerpc-susceptible-to-spectre-yep.html http://tenfourfox.blogspot.com/2018/01/is-powerpc-susceptibl... So there goes all your PowerMacs. (And likely the Gamecube and Wii too!)