• Michael Holzheu's avatar
    [S390] kernel: Shutdown Actions Interface · 99ca4e58
    Michael Holzheu authored
    In case of a kernel panic it is currently possible to specify that a dump
    should be created, the system should be rebooted or stopped. Virtual sysfs
    files under the directory /sys/firmware/ are used for that configuration.
    In addition to that, there are kernel parameters 'vmhalt', 'vmpoff'
    and 'vmpanic', which can be used to specify z/VM commands, which are
    automatically executed in case of halt, power off or a kernel panic.
    This patch combines both functionalities and allows to specify the z/VM CP
    commands also via sysfs attributes. In addition to that, it enhances the
    existing handling of shutdown triggers (e.g. halt or panic) and associated
    shutdown actions (e.g. dump or reipl) and makes it more flexible.
    Signed-off-by: default avatarMichael Holzheu <holzheu@de.ibm.com>
    Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
ipl.c 35.8 KB