On Tue, Aug 26, 2014 at 08:03:28AM -0400, Joshua Kinard wrote: > Yeah, coherency shouldn't be a problem for the Octane. hardware-coherent > like IP27. > > The icache snooping fix is already enabled in > arch/mips/include/asm/mach-ip30/cpu-feature-overrides.h: > > #define cpu_icache_snoops_remote_store 1 > > SMP is not working yet on IP30, though. I gave up on that for now, because > I can't get the second CPU to start ticking properly. Are you running a preemptible kernel? You could also change the definition of cpu_icache_snoops_remote_store to 0 for testing. That should make things just a bit slower but otherwise have not impact. Would be interesting to see if that makes the SIGs go away. Ralf
