Hi Ben, > How would we miss ? > > trylock does loop on stwcx. failure, it doesn't loop if the lock is > -taken-, so if the lock is only used for actually dealing with the > oops the only "miss" is because somebody already got it... or am I > missing something ?
I'm thinking of two CPUs that enter at exactly the same time either through a system reset or an ugly bug (writing junk at 0x900 so the decrementer exception gets an oops). Probably unlikely enough that we don't care. Anton _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
