On 23/11/15 12:06, Nikita Yushchenko wrote: > 23.11.2015 15:03, Russell King - ARM Linux пишет: >> On Mon, Nov 23, 2015 at 02:59:06PM +0300, [email protected] wrote: >>> From: Nikita Yushchenko <[email protected]> >>> >>> While running an imx6s boasrd, I got following message in boot log: >>> >>> [ 0.032414] CPU1: failed to boot: -38 >>> >>> This looked strange: imx6s is singe-core and kernel perfectly knows >>> that. However, for some reason it tries to initialize CPU 1? >>> >>> I found this to be caused by >>> - CONFIG_SMP_ON_UP successfully detects that system is single core, >>> - this causes is_smp() to return false, >>> - this causes setup_arch() to skip smp_init_cpus() call, >>> - this skips board-specific code that sets cpu_possible mask. >> >> Right, so you should end up with the possible and present masks >> containing just one CPU, which should prevent the kernel trying to >> bring any secondary CPUs online. > > Kernel that is running here still tries to init CPU 1 for some reason.
I *guess* cpus node [1] in your dts has more than one cpu entry, could you check please? [1] Documentation/devicetree/bindings/arm/cpus.txt Vladimir > > Will try to check mainline (although not sure if that will be possible > on available custom hardware) > > _______________________________________________ > linux-arm-kernel mailing list > [email protected] > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
