• Kjetil Oftedal's avatar
    sparc32,sun4d: Change IPI IRQ level to prevent collision between IPI and timer interrupt · 38f7f8f0
    Kjetil Oftedal authored
    On Sun4d systems running in SMP mode, IRQ 14 is used for timer interrupts
    and has a specialized interrupt handler. IPI is currently set to use IRQ 14
    as well, which causes it to trigger the timer interrupt handler, and not the
    IPI interrupt handler.
    
    The IPI interrupt is therefore changed to IRQ 13, which is the highest
    normally handled interrupt. This IRQ is also used for SBUS interrupts,
    however there is nothing in the IPI/SBUS interrupt handlers that indicate
    that they will not handle sharing the interrupt.
    (IRQ 13 is indicated as audio interrupt, which is unlikely to be found in a
    sun4d system)
    Signed-off-by: default avatarKjetil Oftedal <oftedal@gmail.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    38f7f8f0
irq.h 2.56 KB