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| author | Janosch Frank <frankja@linux.ibm.com> | 2020-10-06 05:42:49 -0400 |
|---|---|---|
| committer | Thomas Huth <thuth@redhat.com> | 2020-10-06 20:14:48 +0200 |
| commit | 25f5adea5a10fe204e41d085dff6ea94aaf80a9f (patch) | |
| tree | d4c600c9676b7cbd6901f83a051ecc532497f1f4 /pc-bios/s390-ccw | |
| parent | 42ab98e7d71b834f4f8e2471f60b1c737b9543f3 (diff) | |
| download | qemu-25f5adea5a10fe204e41d085dff6ea94aaf80a9f.zip qemu-25f5adea5a10fe204e41d085dff6ea94aaf80a9f.tar.gz qemu-25f5adea5a10fe204e41d085dff6ea94aaf80a9f.tar.bz2 | |
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 <frankja@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20201006094249.50640-5-frankja@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'pc-bios/s390-ccw')
| -rw-r--r-- | pc-bios/s390-ccw/start.S | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S index ce51930..4d5ad21 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) |