• Will Deacon's avatar
    ARM: stop: execute platform callback from cpu_stop code · 02b73e2e
    Will Deacon authored
    Sending IPI_CPU_STOP to a CPU causes it to execute a busy cpu_relax
    loop forever. This makes it impossible to kexec successfully on an SMP
    system since the secondary CPUs do not reset.
    This patch adds a callback to platform_cpu_kill, defined when
    CONFIG_HOTPLUG_CPU=y, from the ipi_cpu_stop handling code. This function
    currently just returns 1 on all platforms that define it but allows them
    to do something more sophisticated in the future.
    Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
Kconfig 64.1 KB