By TNL: GN22-0498
Summary of Machine-Check Masking
Subclass Condition
PD
TD Timer Damage
CD Timing Facilities Damage
ED External Damage
DG Degradation
W Warning
Explanati on:
P
Subclass Mask
EM
EM
RM
EM
DM
WM
Action When CPU Disabled for Condition
Check-Stop Control =
P*
P
P
Y
P
P
P
Check-Stop Control = 1
Check stop
Check stop
P
P
Y
P
P
P
Y
*
Machine-Check Condition Masking
o
AFL Control
SMCEL Control
CR 14 Bit 1
X
o
o
AMCEL Control
CR14Bit8
X
o
o
Machine-Check Extended Logout Action
No MCEL
No MCEL
MCEL may occur only during machine-check interruption.
1
MCEL may occur at any time.
2
MCEL may occur at any time.
Fixed Logout Action
o CPU portion of fixed logout area may be changed only during machine-check interruption.
1
CPU portion 'Of fixed logout area may be changed at any time.
Explanation:
X
Logout prior to instruction retry is not permissible in this state even though recovery reports are enabled.
2
Machine-Check Logout Control
Control Register 14 State of Bit on
WM Warning mask 7
Machine-Check Handling 183