Messages in this thread | | | Date | Thu, 8 Feb 2018 20:52:40 +0000 | From | Alan Cox <> | Subject | Re: [BUG] x86 : i486 reporting to be vulnerable to Meltdown/Spectre_V1/Spectre_V2 |
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> > Also worth nothing that the difference between the cpu and memory > > speeds is much lower - so far fewer instructions could be speculatively > > executed while waiting a cache miss.
But they also have more instructions that take a lot of clocks and are easier to stall - eg by doing things like opening and mmapping a framebuffer and then doing a floating point double store to it misaligned.
Meltdown we can at least reasonably test but spectre is hard.
Alan
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