[kmeisthax]

A thread in the same process could observe the timing change and infer certain things about the memory address. This is mitigated by the fact that intra-thread and host-guest communication is already a side channel nightmare and everyone now only considers process boundaries to be defensible. It's sort of like worrying about someone being able to cut keys from a picture you posted on Facebook when all your house locks can be raked open with a $5 tool from Amazon.