Domenico, On 09/04/2013 04:28 PM, Domenico Andreoli wrote: >>>> J5600 is SMP capable in both 32bit and 64bit mode. >>>> mine doesn't boot 64bit SMP since 2.6.22. I've never been able to trace >>>> it down but can confirm it happens also on more recent kernels. >> >> I confirm that smp parisc64 v3.11 doesn't bring up both the cpus on my >> system but at least it boots one, something that didn't happen in some >> darker moments since 2.6.22. >> >> similar "SMP: CPU:1 is stuck." happens also with debian v3.10-parisc64-smp kernel. > > BTW, this is the most detailed investigation I'm aware of: > https://lkml.org/lkml/2008/4/20/251 Dave Anglin had the idea that the 64bit SMP CPU#1 stuck problems might be related to PDC- or I/O-space conflicts with physical memory. On Dave Land's machine (J6750) we could verify that off-list. I assume you have more than 3GB (4GB) RAM in your machine? If yes, then if you phyiscally remove some memory so that you leave a max. of 3GB in, the 64bit SMP kernel will most likely boot up all CPUs. You wrote: > mine doesn't boot 64bit SMP since 2.6.22. Are you *really* sure that it booted 64bit SMP with kernel 2.6.22 ? Or did you maybe upgraded memory after that date? If it sucessfully booted, then we maybe have only some kind of regression. Helge -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
