to real page zero for the low storage protection facility.
Entry Values: The virtual address passed in the Rx register is stored in the
on. The Ry register is not used.
Condition Codes: If a BC mode virtual machine attempts to issue a
Diagnose Code
machine to request timing information from
dispatched,
used and the
in the virtual machine may use the timing information to calculate the amount of
processor time used by each job, by each job step, and so forth.
clock
Because there is no virtual
also include the time used by all virtual machines and by
Entry Values: When
tain the address of a 16-byte area, the communication area. The Ry register is not
used.
The communication area must be aligned on a double word boundary and must be
in the virtual machine's real storage, preferably in page zero.
ferred because
the communication area. Thus, when page zero is used,
an additional page.
area each time the virtual machine is dispatched. The first eight bytes of the com
munication area contain the total processor time the virtual machine has used. The
last eight bytes contain the
running in the virtual machine should not alter the communication area.
To use the information that
following steps: .