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    xen: implement CPU hotplugging · d68d82af
    Alex Nixon 提交于
    Note the changes from 2.6.18-xen CPU hotplugging:
    
    A vcpu_down request from the remote admin via Xenbus both hotunplugs the
    CPU, and disables it by removing it from the cpu_present map, and removing
    its entry in /sys.
    
    A vcpu_up request from the remote admin only re-enables the CPU, and does
    not immediately bring the CPU up. A udev event is emitted, which can be
    caught by the user if he wishes to automatically re-up CPUs when available,
    or implement a more complex policy.
    Signed-off-by: NAlex Nixon <alex.nixon@citrix.com>
    Acked-by: NJeremy Fitzhardinge <jeremy@goop.org>
    Signed-off-by: NIngo Molnar <mingo@elte.hu>
    d68d82af
events.c 19.0 KB