The Meltdown exploit affects every Intel processor made since the Pentium, but AMD CPUs are relatively safe from it. ARM processors are also affected. All brands of CPUs are affected by the Spectre exploit. Just assume the device your using is affected and follow whatever guidelines are given to apply the stop-gap fix(es). And they are stop-gap. There is no permanent fix to the problem until new CPU architecture is designed. That's going to be a while; see JR's last post.
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