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ARM: 7405/1: kexec: call platform_cpu_kill on the killer rather than …
…the victim When performing a kexec on an SMP system, the secondary cores are stopped by calling machine_shutdown(), which in turn issues IPIs to offline the other CPUs. Unfortunately, this isn't enough to reboot the cores into a new kernel (since they are just executing a cpu_relax loop somewhere in memory) so we make use of platform_cpu_kill, part of the CPU hotplug implementation, to place the cores somewhere safe. This function expects to be called on the killing CPU for each core that it takes out. This patch moves the platform_cpu_kill callback out of the IPI handler and into smp_send_stop, therefore ensuring that it executes on the killing CPU rather than on the victim, matching what the hotplug code requires. Cc: email@example.com Reported-by: Russell King <firstname.lastname@example.org> Signed-off-by: Will Deacon <email@example.com> Signed-off-by: Russell King <firstname.lastname@example.org>
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