So far, AMD has only been exposed to the Spectre (branch cache) information leaks haven’t they? They aren’t vulnerable to Meltdown or any of the recent MDS info

So far, AMD has only been exposed to the Spectre (branch cache) information leaks haven’t they? They aren’t vulnerable to Meltdown or any of the recent MDS information leaks because they don’t speculatively execute if the thread doesn’t have access rights. Intel chose to speculate regardless and fixup the register contents on instruction retirement, which is why they have had so many problems.