x86, Kconfig: Add config switch for CPU0 hotplug

	    automatically on SMP systems. )

	  Say N if you want to disable CPU hotplug.

config BOOTPARAM_HOTPLUG_CPU0

	bool "Set default setting of cpu0_hotpluggable"

	default n

	depends on HOTPLUG_CPU && EXPERIMENTAL

	---help---

	  Set whether default state of cpu0_hotpluggable is on or off.

	  Say Y here to enable CPU0 hotplug by default. If this switch

	  is turned on, there is no need to give cpu0_hotplug kernel

	  parameter and the CPU0 hotplug feature is enabled by default.

	  Please note: there are two known CPU0 dependencies if you want

	  to enable the CPU0 hotplug feature either by this switch or by

	  cpu0_hotplug kernel parameter.

	  First, resume from hibernate or suspend always starts from CPU0.

	  So hibernate and suspend are prevented if CPU0 is offline.

	  Second dependency is PIC interrupts always go to CPU0. CPU0 can not

	  offline if any interrupt can not migrate out of CPU0. There may

	  be other CPU0 dependencies.

	  Please make sure the dependencies are under your control before

	  you enable this feature.

	  Say N if you don't want to enable CPU0 hotplug feature by default.

	  You still can enable the CPU0 hotplug feature at boot by kernel

	  parameter cpu0_hotplug.

config COMPAT_VDSO

	def_bool y

	prompt "Compat VDSO support"