On 30-05-18, 14:32, Krzysztof Kozlowski wrote: > 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. True and I used the following out of tree patch for a long time for my dual A15 exynos to make hotplug work. https://git.linaro.org/people/vireshk/backup/linux.git/commit/?h=bkp/exynos/hotplug&id=aab8a906a70b8f1fb15a4b7bd2ee27e6dcabf79d -- viresh -- 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