Binyamin Dissen wrote:
On Mon, 2 Jun 2014 11:45:38 -0700 Ed Jaffe <[email protected]>
wrote:
:>NIL and OIL are not required on z196 and higher machines. NI and OI now
:>do the necessary serialization.
Do I understand correctly?
NI/OI do the same serialization that CS does? That two OI's issued on two
processors will guarantee the result of both bits set?
"For OR (OI, OIY), the first operand is one byte in length, and only one byte is
stored. When the inter-locked-access facility 2 is installed, the update of the
first operand appears to be an interlocked-update ref-erence as observed by
other CPUs and channel pro-grams, and a specific-operand-serialization operation
is performed."
Facility bit 52.
Bob
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