Greg Stark <gsstark(at)mit(dot)edu> writes:
> Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
>> According to the previous port report from Red Hat, the PS2 chip simply
>> doesn't have any user-space TAS instruction, so you're pretty much stuck.
> Out of curiosity. If it lacks a tas instruction, is there really any smp
> implementation that runs on it?
My recollection is that it has TAS capability but the designers made it
a privileged instruction (in a fit of brain death :-()
> Why would postgres want spinlocks at all with only one processor?
Think harder... one processor != one process...
regards, tom lane