On Sat, 2007-05-19 at 00:15 -0700, Darren Hart wrote: > When trying to boot with the maxcpus=1 option, the -rt kernel seems to hang > somewhere in acpi_processor_init(). > > I tested mainline 2.6.21 and it does boot with maxcpus=1. 2.6.20-rt8, > 2.6.21-rt1, 2, and 4 all hang at: > > Calling initcall 0xffffffff817a41df: acpi_processor_init+0x0/0xdf() > > when booted with initcall_debug and maxcpus=1. I traced this only as far as > the call to acpi_bus_register_driver. So this seems to have been introduced > by the -rt patch. I'm not sure if I should try and see when it was > introduced (as 2.6.16-rt22 does not fail) or if I should head "down the acpi > rabbit hole"... Be careful, when sticking your head into this hole ! I try to nail it down. tglx - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html