On Tue, Jul 05, 2011 at 10:29:17AM -0700, Stephen Boyd wrote: > If an ARM system has multiple cpus in the same socket and the > kernel is booted with maxcpus=1, secondary cpus are possible but > not present due to how platform_smp_prepare_cpus() is called. > Since most typical ARM processors don't actually support physical > hotplug, initialize the present map to be equal to the possible > map in generic ARM SMP code. Also, always call > platform_smp_prepare_cpus() as long as max_cpus is non-zero (0 > means no SMP) to allow platform code to do any SMP setup. > > After applying this patch it's possible to boot an ARM system > with maxcpus=1 on the command line and then hotplug in secondary > cpus via sysfs. This is more in line with how x86 does things. Ok - how about putting this in the patch system? Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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