• Martin Schwidefsky's avatar
    s390: simplify disabled_wait · 98587c2d
    Martin Schwidefsky authored
    The disabled_wait() function uses its argument as the PSW address when
    it stops the CPU with a wait PSW that is disabled for interrupts.
    The different callers sometimes use a specific number like 0xdeadbeef
    to indicate a specific failure, the early boot code uses 0 and some
    other calls sites use __builtin_return_address(0).
    
    At the time a dump is created the current PSW and the registers of a
    CPU are written to lowcore to make them avaiable to the dump analysis
    tool. For a CPU stopped with disabled_wait the PSW and the registers
    do not really make sense together, the PSW address does not point to
    the function the registers belong to.
    
    Simplify disabled_wait() by using _THIS_IP_ for the PSW address and
    drop the argument to the function.
    Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
    98587c2d
startup.c 5.12 KB