• Russ Anderson's avatar
    x86: Enable NMI on all cpus on UV · 78c06176
    Russ Anderson authored
    Enable NMI on all cpus in UV system and add an NMI handler
    to dump_stack on each cpu.
    
    By default on x86 all the cpus except the boot cpu have NMI
    masked off.  This patch enables NMI on all cpus in UV system
    and adds an NMI handler to dump_stack on each cpu.  This
    way if a system hangs we can NMI the machine and get a
    backtrace from all the cpus.
    
    Version 2: Use x86_platform driver mechanism for nmi init, per
               Ingo's suggestion.
    
    Version 3: Clean up Ingo's nits.
    Signed-off-by: default avatarRuss Anderson <rja@sgi.com>
    LKML-Reference: <20100226164912.GA24439@sgi.com>
    Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
    78c06176
x2apic_uv_x.c 19.4 KB