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-rw-r--r--arch/arm/Kconfig2
-rw-r--r--arch/arm/kernel/smp.c4
2 files changed, 5 insertions, 1 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4b01d71bdbd..abba5b8c9d7 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2001,7 +2001,7 @@ config XIP_PHYS_ADDR
config KEXEC
bool "Kexec system call (EXPERIMENTAL)"
- depends on EXPERIMENTAL
+ depends on EXPERIMENTAL && (!SMP || HOTPLUG_CPU)
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
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
index 76ff28d87bf..57db122a4f6 100644
--- a/arch/arm/kernel/smp.c
+++ b/arch/arm/kernel/smp.c
@@ -522,6 +522,10 @@ static void ipi_cpu_stop(unsigned int cpu)
local_fiq_disable();
local_irq_disable();
+#ifdef CONFIG_HOTPLUG_CPU
+ platform_cpu_kill(cpu);
+#endif
+
while (1)
cpu_relax();
}