On Wed, May 30, 2018 at 6:38 AM, Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote: > On 29-05-18, 15:18, Krzysztof Kozlowski wrote: >> Thanks for the patch. >> >> In case of Exynos, the booting CPU always has these information in DT >> and the booting CPU cannot be changed (chosen by firmware/hardware >> configuration). > > But can the booting CPU be offlined ? > > If yes, then this is how things are broken right now. > > Build cpufreq driver as module, boot kernel, hotplug out CPU0, insert > cpufreq driver and that will try to find these properties in CPU1. OK, I see the possibility although it is still far away from use cases. You cannot hotplug booting CPU (CPU0) on Exynos kernels. It never worked. Strictly speaking - offlining will work. But bringing it online will likely hang the system. Best regards, Krzysztof -- 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
 |