s390/traps: Handle nullifying program checks in get_trap_ip()

get_trap_ip() always rewinds the PSW address by the instruction length
from the interruption code. For nullifying program checks the PSW
already points at the faulting instruction, so rewinding is wrong.

Add a nullified[] bitmap and return the unchanged PSW address for
nullifying cases, or if PIF_PSW_ADDR_ADJUSTED is set.

No functional change for existing callers, which only deal with
suppressing, terminating, or completing program checks.

Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

0 files changed, 0 insertions, 0 deletions