Hi all, I have a dual core Intel T9500. I boot the cpu with the acpi_idle driver and intel_idle enabled in the config. The kernel is booted with maxcpus=1. After the system has boot, I put cpu1 online via sysfs. But I don't see any 'cpuidle' directory in the cpu's sysfs entry: /sys/devices/system/cpu/cpu1/cpuidle (?) When I look at the code I see the notifier is present for hotplug in processor_driver.c and the cpuidle intel init routine should be called there. I am wondering is it a bug or an expected behavior ? Thanks -- Daniel -- <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | <http://twitter.com/#!/linaroorg> Twitter | <http://www.linaro.org/linaro-blog/> Blog