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    Subject[PATCH 0/8] Online/offline BSP on x86
    Date
    From: Fenghua Yu <fenghua.yu@intel.com>

    BSP or CPU0 has been the last obstacle to CPU hotplug on x86. This patch set
    implements BSP online and offline and removes this obstacle to CPU hotplug.

    Fenghua Yu (8):
    x86, apic.c: Disable irq0 if CPU enables ARAT for local apic timer
    x86/mtrr/main.c: Ask the first online CPU to save mtrr
    x86, i387.c: thread xstate is initialized only on BSP once
    kernel/workqueue.c: unbound work queue rescuer runs on first cpu in
    cpumask_online_cpu
    x86, common.c, smpboot.c: Init BSP during BSP online and don't
    offline BSP if irq is bound to it
    x86, topology.c: Enable CPU0 online/offline
    kernel/power/main.c: Not suspend/resume if CPU0 is offlined
    kernel/cpu.c: Define bsp_hotpluggable variable

    Documentation/kernel-parameters.txt | 7 ++++++
    arch/x86/include/asm/processor.h | 1 +
    arch/x86/kernel/apic/apic.c | 5 ++++
    arch/x86/kernel/cpu/common.c | 13 +++++++++--
    arch/x86/kernel/cpu/mtrr/main.c | 6 +++-
    arch/x86/kernel/i387.c | 9 +++++++-
    arch/x86/kernel/smpboot.c | 38 ++++++++++++++++++++++++++++------
    arch/x86/kernel/topology.c | 22 +++++++++++++------
    include/linux/cpu.h | 2 +
    kernel/cpu.c | 5 ++++
    kernel/power/main.c | 9 ++++++++
    kernel/workqueue.c | 4 +-
    12 files changed, 99 insertions(+), 22 deletions(-)



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