No, not quite all the world. Frigg neglected to extort a promise of safety from mistletoe. There's some speculation, it seems, about why the myth decided that mistletoe was the exception--but anyway, Frigg's stated reason was that she couldn't imagine harmless, wimpy little mistletoe ever being a potential danger to her son. She'd tried to wall her son off from all danger but her lofty disdain of "harmless" mistletoe left a gap in her wall that #Loki would eventually drive a truck through. But Loki didn't act, not yet, not until the Aesir's culminating act of arrogance and heedlessness.