Allow me to summarize x86 side channel attacks: Spectre v1: speculation is insecure by design Spectre v2: secure branch prediction matters Meltdown: Intel are dumbasses L1TF: Intel are monumental, inexcusable dumbasses PortSmash: hyperthreading is insecure by design
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As far as I know ~nobody was shipping Cortex-A75 silicon when Meltdown was made public, and I can't even find anyone other than Qualcomm that shipped it, and then only on two SoCs, and we don't even know if both are unpatched.
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