US 2022/0027285 A1Published application

Fine Grain Data Migration to or from Borrowed Memory

AssigneeMicron Technology, Inc.

InventorsDmitri Yudanov, Ameen D. Akel, Samuel E. Bradshaw, Kenneth Marion Curewitz, Sean Stephen Eilert

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Abstract

Systems, methods and apparatuses of fine grain data migration in using Memory as a Service (MaaS) are described. For example, a memory status map can be used to identify the cache availability of sub-regions (e.g., cache lines) of a borrowed memory region (e.g., a borrowed remote memory page). Before accessing a virtual memory address in a sub-region, the memory status map is checked. If the sub-region has cache availability in the local memory, the memory management unit uses a physical memory address converted from the virtual memory address to make memory access. Otherwise, the sub-region is cached from the borrowed memory region to the local memory, before the physical memory address is used.

Claims20

Dependent claims

A mobile device, comprising:

a communication device configured to communicate over a cellular communications network to access a computing system;
at least one microprocessor;
and
a first memory coupled within the mobile device to the at least one microprocessor;
wherein the mobile device is configured to:
transmit, via the communication device, a request to borrow, from the computing system, an amount of a second memory of the computing system;
generate a memory map to map virtual memory addresses, used in instruction executions in the at least one microprocessor, to physical memories, including the first memory coupled locally to the at least one microprocessor and the amount of the second memory connected to the at least one microprocessor via the communication device;
and
adjust the memory map, in response to access to a virtual memory address mapped to the amount of the second memory, to remap a unit of virtual memory addresses from being hosted in the amount of the second memory to being hosted in the first memory.

6 more elements

A method, comprising:

communicating, by a communication device of a mobile device, over a cellular communications network to access a computing system;
transmitting, via the communication device, a request to borrow, from the computing system, an amount of a second memory of the computing system;
generate a memory map to map virtual memory addresses, used in instruction executions in at least one microprocessor of the mobile device, to physical memories, including a first memory coupled locally to the at least one microprocessor in the mobile device and the amount of the second memory connected to the at least one microprocessor via the communication device;
and
adjusting the memory map, in response to access to a virtual memory address mapped to the amount of the second memory, to remap a unit of virtual memory addresses from being hosted in the amount of the second memory to being hosted in the first memory.

2 more elements

A non-transitory computer storage medium storing instructions which, when executed in a mobile device, cause the mobile device to perform a method, comprising:

communicating, by a communication device of the mobile device, over a cellular communications network to access a computing system;
transmitting, via the communication device, a request to borrow, from the computing system, an amount of a second memory of the computing system;
generate a memory map to map virtual memory addresses, used in instruction executions in at least one microprocessor of the mobile device, to physical memories, including a first memory coupled locally to the at least one microprocessor in the mobile device and the amount of the second memory connected to the at least one microprocessor via the communication device;
and
adjusting the memory map, in response to access to a virtual memory address mapped to the amount of the second memory, to remap a unit of virtual memory addresses from being hosted in the amount of the second memory to being hosted in the first memory.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/496,661Filed 7 Oct 2021
Priority: 28 May 2019
Published: 27 Jan 2022
Term ends: Not estimatedThe source records don’t support an estimate.

Classification23 codes

G06F 12/1009
Address translation: using page tables, e.g. page table structures
H04L 67/04
Protocols: specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
G06F 12/0653
Configuration or reconfiguration: with centralised address assignment
G06F 12/0802
In hierarchically structured memory systems, e.g. virtual memory systems: addressing of a memory level in which the access to the desired data or…

Family

Application16/424,427Continuation · filed 28 May 2019
Application17/496,661Continuation
US 11,169,930 B2Related patent
US 2020/0379914 A1Published application
US 2022/0027285 A1This patent

From the US filing history. Foreign family members aren’t listed.