1 files changed, 45 insertions, 22 deletions

diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig
index d4ae5f9ceae6..6c02336fe2e4 100644
--- a/arch/i386/Kconfig
+++ b/arch/i386/Kconfig
@@ -510,28 +510,7 @@ config SCHED_SMT
           cost of slightly increased overhead in some places. If unsure say
           N here.
 
-config PREEMPT
-        bool "Preemptible Kernel"
-        help
-          This option reduces the latency of the kernel when reacting to
-          real-time or interactive events by allowing a low priority process to
-          be preempted even if it is in kernel mode executing a system call.
-          This allows applications to run more reliably even when the system is
-          under load.
-
-          Say Y here if you are building a kernel for a desktop, embedded
-          or real-time system.  Say N if you are unsure.
-
-config PREEMPT_BKL
-        bool "Preempt The Big Kernel Lock"
-        depends on PREEMPT
-        default y
-        help
-          This option reduces the latency of the kernel by making the
-          big kernel lock preemptible.
-
-          Say Y here if you are building a kernel for a desktop system.
-          Say N if you are unsure.
+source "kernel/Kconfig.preempt"
 
 config X86_UP_APIC
         bool "Local APIC support on uniprocessors"
@@ -963,6 +942,41 @@ config SECCOMP
 
 source kernel/Kconfig.hz
 
+config PHYSICAL_START
+        hex "Physical address where the kernel is loaded" if EMBEDDED
+        default "0x100000"
+        help
+          This gives the physical address where the kernel is loaded.
+          Primarily used in the case of kexec on panic where the
+          fail safe kernel needs to run at a different address than
+          the panic-ed kernel.
+
+          Don't change this unless you know what you are doing.
+
+config KEXEC
+        bool "kexec system call (EXPERIMENTAL)"
+        depends on EXPERIMENTAL
+        help
+          kexec is a system call that implements the ability to shutdown your
+          current kernel, and to start another kernel.  It is like a reboot
+          but it is indepedent of the system firmware.   And like a reboot
+          you can start any kernel with it, not just Linux.
+
+          The name comes from the similiarity to the exec system call.
+
+          It is an ongoing process to be certain the hardware in a machine
+          is properly shutdown, so do not be surprised if this code does not
+          initially work for you.  It may help to enable device hotplugging
+          support.  As of this writing the exact hardware interface is
+          strongly in flux, so no good recommendation can be made.
+
+config CRASH_DUMP
+        bool "kernel crash dumps (EXPERIMENTAL)"
+        depends on EMBEDDED
+        depends on EXPERIMENTAL
+        depends on HIGHMEM
+        help
+          Generate crash dump after being started by kexec.
 endmenu
 
 
@@ -1250,6 +1264,15 @@ config SCx200
           This support is also available as a module.  If compiled as a
           module, it will be called scx200.
 
+config HOTPLUG_CPU
+        bool "Support for hot-pluggable CPUs (EXPERIMENTAL)"
+        depends on SMP && HOTPLUG && EXPERIMENTAL
+        ---help---
+          Say Y here to experiment with turning CPUs off and on.  CPUs
+          can be controlled through /sys/devices/system/cpu.
+
+          Say N.
+
 source "drivers/pcmcia/Kconfig"
 
 source "drivers/pci/hotplug/Kconfig"