| Message ID | 20200831150910.317171-6-frankja@linux.ibm.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | pc-bios: s390x: Cleanup part 2 | expand |
On 31/08/2020 17.09, Janosch Frank wrote: > 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> > --- > pc-bios/s390-ccw/start.S | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S > index 939aac3a7c..775b45baeb 100644 > --- a/pc-bios/s390-ccw/start.S > +++ b/pc-bios/s390-ccw/start.S > @@ -44,6 +44,9 @@ done: > larl %r2, external_new_psw > stg %r1, 8(%r2) > mvc 0x1b0(16),0(%r2) > + /* set up a pgm exception disabled wait psw */ > + larl %r2, disabled_wait_psw > + mvc 0x01d0(16), 0(%r2) > j main /* And call C */ > > memsetxc: > Sounds like a good idea. Reviewed-by: Thomas Huth <thuth@redhat.com>
diff --git a/pc-bios/s390-ccw/start.S b/pc-bios/s390-ccw/start.S index 939aac3a7c..775b45baeb 100644 --- a/pc-bios/s390-ccw/start.S +++ b/pc-bios/s390-ccw/start.S @@ -44,6 +44,9 @@ done: larl %r2, external_new_psw stg %r1, 8(%r2) mvc 0x1b0(16),0(%r2) + /* set up a pgm exception disabled wait psw */ + larl %r2, disabled_wait_psw + mvc 0x01d0(16), 0(%r2) j main /* And call C */ memsetxc: