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"This is thought to be entirely secure against the Meltdown and Spectre CPU vulnerabilities, which require speculative execution on branch instructions."
by iokevins 9y ago
"This is thought to be entirely secure against the Meltdown and Spectre CPU vulnerabilities, which require speculative execution on branch instructions."
- tgb 9y agoI must not be understanding Meltdown correctly and I know this is a joke, but I thought it was the malicious code that used speculative execution to (indirectly) read unauthorized memory. So in what sense is Branchless Doom secure against Meltdown?
- trentnelson 9y agoYou don't store your plaintext passwords in a modded version of Doom with a kernel scheduler hack to ensure it mostly gets dispatched on the HyperThread core neighboring the one your browser is getting dispatched onto? Amateur.
- UncleMeat 9y agoMeltdown doesn't involve speculative execution across branches. It is out of order execution through instructions that will fail.