Reporting of partially performed memory move
First Claim
1. In a data processing system having a processor and a memory, a method comprising:
- initiating an asynchronous memory move (AMM) operation, wherein the processor performs an effective address move of data from a first effective address to a second effective address and forwards parameters of the AMM operation to asynchronous memory mover logic for completion of the physical movement of data (data move) from a first memory location to a second memory location;
the processor executing a second operation corresponding to a status instruction provided within an instruction set architecture of the data processing system, which second operation checks a status of the completion by the asynchronous memory mover logic of the data move to the second memory location and returns a notification indicating the status;
receiving the notification in response to the status check performed by executing the second operation, wherein the notification indicates at least one of the following statuses;
data move in progress;
data move totally done;
data move partially done and paused/stopped;
data move cannot be performed; and
occurrence of a translation look-aside buffer invalidate entry (TLBIE) operation;
wherein the notification indicates the data move cannot be performed in response to occurrence of a condition from among;
(a) at least one of a source address corresponding to the first memory location and a destination address corresponding to the destination location has an address conflict;
(b) the data is unaligned with the pages of the memory location; and
(c) the occurrence of the TLBIE; and
initiating one or more actions corresponding to the notification received in response to the status check.
1 Assignment
0 Petitions
Accused Products
Abstract
A method performed in a data processing system initiates an asynchronous memory move (AMM) operation, whereby a processor performs a move of data in virtual address space from a first effective address to a second effective address and forwards parameters of the AMM operation to asynchronous memory mover logic for completion of the physical movement of data from a first memory location to a second memory location. The processor executes a second operation, which checks a status of the completion of the data move and returns a notification indicating the status. The notification indicates a status, which includes one of: data move in progress; data move totally done; data move partially done; data move cannot be performed; and occurrence of a translation look-aside buffer invalidate entry (TLBIE) operation. The processor initiates one or more actions in response to the notification received.
101 Citations
15 Claims
-
1. In a data processing system having a processor and a memory, a method comprising:
-
initiating an asynchronous memory move (AMM) operation, wherein the processor performs an effective address move of data from a first effective address to a second effective address and forwards parameters of the AMM operation to asynchronous memory mover logic for completion of the physical movement of data (data move) from a first memory location to a second memory location; the processor executing a second operation corresponding to a status instruction provided within an instruction set architecture of the data processing system, which second operation checks a status of the completion by the asynchronous memory mover logic of the data move to the second memory location and returns a notification indicating the status; receiving the notification in response to the status check performed by executing the second operation, wherein the notification indicates at least one of the following statuses;
data move in progress;
data move totally done;
data move partially done and paused/stopped;
data move cannot be performed; and
occurrence of a translation look-aside buffer invalidate entry (TLBIE) operation;wherein the notification indicates the data move cannot be performed in response to occurrence of a condition from among;
(a) at least one of a source address corresponding to the first memory location and a destination address corresponding to the destination location has an address conflict;
(b) the data is unaligned with the pages of the memory location; and
(c) the occurrence of the TLBIE; andinitiating one or more actions corresponding to the notification received in response to the status check. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A data processing system comprising:
-
a memory; a processor coupled to the memory; asynchronous memory mover logic communicatively linked to the processor; and processing logic associated with at least one of the processor and asynchronous memory mover logic for; initiating an asynchronous memory move (AMM) operation, wherein the processor performs an effective address move of data from a first effective address to a second effective address and forwards parameters of the AMM operation to asynchronous memory mover logic for completion of the movement of data (data move) from a first memory location to a second memory location; the processor executing a second operation corresponding to a status instruction provided within an instruction set architecture of the data processing system, which second operation checks a status of the completion by the asynchronous memory mover logic of the data move to the second memory location and returns a notification indicating the status; receiving the notification in response to the status check performed by executing the second operation, wherein the notification indicates at least one of the following statuses;
data move in progress;
data move totally done;
data move partially done and paused/stopped;
data move cannot be performed; and
occurrence of a translation look-aside buffer invalidate entry (TLBIE) operation; andinitiating one or more actions corresponding to the notification received in response to the status check, wherein the one or more actions comprises;
in response to the notification indicating the data move is partially done, parsing the notification for information indicating a point at which the data move stopped/paused and a condition which caused the data move stopped/paused. - View Dependent Claims (10, 11, 12)
-
-
13. A computer program product comprising:
-
a machine readable storage medium; and program code on the machine readable storage medium that when executed within a processing system having a processor and a memory and asynchronous memory mover logic, said program code enables the processing system to perform the functions of; initiating an asynchronous memory move (AMM) operation, wherein the processor performs an effective address move of data from a first effective address to a second effective address and forwards parameters of the AMM operation to asynchronous memory mover logic for completion of the movement of data (data move) from a first memory location to a second memory location; executing, via the processor, a second operation corresponding to a status instruction provided within an instruction set architecture of the data processing system, which second operation checks a status of the completion by the asynchronous memory mover logic of the data move to the second memory location and returns a notification indicating the status; receiving the notification in response to the status check performed by executing the second operation, wherein the notification indicates at least one of the following statuses;
data move in progress;
data move totally done;
data move partially done and paused/stopped;
data move cannot be performed; and
occurrence of a translation look-aside buffer invalidate entry (TLBIE) operation;wherein the notification indicates the data move cannot be performed in response to occurrence of a condition from among;
(a) at least one of a source address corresponding to the first memory location and a destination address corresponding to the destination location has an address conflict;
(b) the data is unaligned with the pares of the memory location; and
(c) the occurrence of the TLBIE; andinitiating one or more actions corresponding to the notification received in response to the status check. - View Dependent Claims (14, 15)
-
Specification