From 25f5adea5a10fe204e41d085dff6ea94aaf80a9f Mon Sep 17 00:00:00 2001 From: Janosch Frank Date: Tue, 6 Oct 2020 05:42:49 -0400 Subject: [PATCH] pc-bios: s390x: Go into disabled wait when encountering a PGM exception Let's setup a PGM PSW, so we won't load 0s when a program exception happens. Instead we'll load a disabled wait PSW. Signed-off-by: Janosch Frank Reviewed-by: Christian Borntraeger Reviewed-by: Thomas Huth Message-Id: <20201006094249.50640-5-frankja@linux.ibm.com> Signed-off-by: Thomas Huth --- pc-bios/s390-ccw/start.S | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S index ce519300a1..4d5ad21653 100644 --- a/pc-bios/s390-ccw/start.S +++ b/pc-bios/s390-ccw/start.S @@ -34,7 +34,10 @@ remainder: larl %r2,memsetxc ex %r3,0(%r2) done: - j main /* And call C */ + /* set up a pgm exception disabled wait psw */ + larl %r2, disabled_wait_psw + mvc 0x01d0(16), 0(%r2) + j main /* And call C */ memsetxc: xc 0(1,%r1),0(%r1)