• Don Zickus's avatar
    x86: Convert some devices to use DIE_NMIUNKNOWN · 673a6092
    Don Zickus authored
    They are a handful of places in the code that register a die_notifier
    as a catch all in case no claims the NMI.  Unfortunately, they trigger
    on events like DIE_NMI and DIE_NMI_IPI, which depending on when they
    registered may collide with other handlers that have the ability to
    determine if the NMI is theirs or not.
    
    The function unknown_nmi_error() makes one last effort to walk the
    die_chain when no one else has claimed the NMI before spitting out
    messages that the NMI is unknown.
    
    This is a better spot for these devices to execute any code without
    colliding with the other handlers.
    
    The two drivers modified are only compiled on x86 arches I believe, so
    they shouldn't be affected by other arches that may not have
    DIE_NMIUNKNOWN defined.
    Signed-off-by: default avatarDon Zickus <dzickus@redhat.com>
    Cc: Russ Anderson <rja@sgi.com>
    Cc: Corey Minyard <minyard@acm.org>
    Cc: openipmi-developer@lists.sourceforge.net
    Cc: dann frazier <dannf@hp.com>
    Signed-off-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
    LKML-Reference: <1294348732-15030-3-git-send-email-dzickus@redhat.com>
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    673a6092
hpwdt.c 20.3 KB