What's the schematic to share one crystal with two micros?
What I have done when I needed to share a clock between micros is to have the crystal drive the oscillator on one micro and then use the oscillator output pin (typically CLKOUT or OSCOUT) from that micro to drive the second micro.  

I would expect problems trying to drive two oscillators from the same crystal, if for no other reason than that the capacitance of the long PCB traces required to go between the two processors would cause a malfunction.







simulate this circuit &ndash; Schematic created using CircuitLab