3 ms·
I wonder what else is in x86/arm64/common processors we don't know but would care about. In situations like these it really pays of to have at least some parts
by madez 9y ago
I wonder what else is in x86/arm64/common processors we don't know but would care about.
In situations like these it really pays of to have at least some parts of the system developed as free software. In a dystopian alternative reality where free software never happenend, people would hardly ever hear about these issues, even though issues like these would still be there, and maybe even worse.
Waiting for affordable open/free hardware single board computers like for example lowRISC is aiming to offer is becoming harder and harder. I'm already sitting on my hands (and pocket).
- jabl 9y agoSpeaking of lowRISC, does RISC-V also suffer from this? Apparently SPARC and s390 are immune, since they already have separated user and kernel address spaces, maybe somehow enforced at the ISA level. Having the benefit of hindsight, I hope they have avoided this issue.
- jabl 9y agoReplying to myself, it seems they haven't avoided it, and here is a recent proposal to fix it: https://groups.google.com/a/groups.riscv.org/d/msg/isa-dev/JU0M_vug4R0/YELX92fIBwAJ https://groups.google.com/a/groups.riscv.org/d/msg/isa-dev/J...