Commit 7cf636c9 authored by Heiko Carstens's avatar Heiko Carstens Committed by Alexander Gordeev
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s390/early: Copy last breaking event address to pt_regs 



In case of an early crash the early program check handler also prints the
last breaking event address which is contained within the pt_regs
structure. However it is not initialized, and therefore a more or less
random value is printed in case of a crash.

Copy the last breaking event address from lowcore to pt_regs in case of an
early program check to address this. This also makes it easier to analyze
early crashes.

Reviewed-by: default avatarAlexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarAlexander Gordeev <agordeev@linux.ibm.com>
parent 0cb39c97

arch/s390/kernel/early.c

+1 −0
Original line number Diff line number Diff line
@@ -157,6 +157,7 @@ void __init __do_early_pgm_check(struct pt_regs *regs) 


	regs->int_code = lc->pgm_int_code;

	regs->int_parm_long = lc->trans_exc_code;

	regs->last_break = lc->pgm_last_break;

	ip = __rewind_psw(regs->psw, regs->int_code >> 16);



	/* Monitor Event? Might be a warning */