Processing

Please wait...

Settings

Settings

Goto Application

1. EP3671472 - DATA ACCESS METHOD AND DEVICE

Office European Patent Office
Application Number 17926182
Application Date 25.09.2017
Publication Number 3671472
Publication Date 24.06.2020
Publication Kind A4
IPC
G06F 12/10
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
12Accessing, addressing or allocating within memory systems or architectures
02Addressing or allocation; Relocation
08in hierarchically structured memory systems, e.g. virtual memory systems
10Address translation
G06F 9/455
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
9Arrangements for program control, e.g. control units
06using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
44Arrangements for executing specific programs
455Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
G06F 9/50
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
9Arrangements for program control, e.g. control units
06using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
46Multiprogramming arrangements
50Allocation of resources, e.g. of the central processing unit
G06F 12/02
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
12Accessing, addressing or allocating within memory systems or architectures
02Addressing or allocation; Relocation
G06F 12/1009
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
12Accessing, addressing or allocating within memory systems or architectures
02Addressing or allocation; Relocation
08in hierarchically structured memory systems, e.g. virtual memory systems
10Address translation
1009using page tables, e.g. page table structures
G06F 12/1081
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
12Accessing, addressing or allocating within memory systems or architectures
02Addressing or allocation; Relocation
08in hierarchically structured memory systems, e.g. virtual memory systems
10Address translation
1081for peripheral access to main memory, e.g. direct memory access
CPC
G06F 3/061
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
06Digital input from or digital output to record carriers ; , e.g. RAID, emulated record carriers, networked record carriers
0601Dedicated interfaces to storage systems
0602specifically adapted to achieve a particular effect
061Improving I/O performance
G06F 3/0661
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
06Digital input from or digital output to record carriers ; , e.g. RAID, emulated record carriers, networked record carriers
0601Dedicated interfaces to storage systems
0628making use of a particular technique
0655Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
0661Format or protocol conversion arrangements
G06F 3/0664
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
06Digital input from or digital output to record carriers ; , e.g. RAID, emulated record carriers, networked record carriers
0601Dedicated interfaces to storage systems
0628making use of a particular technique
0662Virtualisation aspects
0664at device level, e.g. emulation of a storage device or system
G06F 3/067
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
3Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
06Digital input from or digital output to record carriers ; , e.g. RAID, emulated record carriers, networked record carriers
0601Dedicated interfaces to storage systems
0668adopting a particular infrastructure
067Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
G06F 9/455
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
9Arrangements for program control, e.g. control units
06using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
44Arrangements for executing specific programs
455Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
G06F 9/5077
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
9Arrangements for program control, e.g. control units
06using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
46Multiprogramming arrangements
50Allocation of resources, e.g. of the central processing unit [CPU]
5061Partitioning or combining of resources
5077Logical partitioning of resources; Management or configuration of virtualized resources
Applicants HUAWEI TECH CO LTD
Inventors LU SHENGWEN
Designated States
Priority Data 2017103203 25.09.2017 CN
Title
(DE) DATENZUGRIFFSVERFAHREN UND -VORRICHTUNG
(EN) DATA ACCESS METHOD AND DEVICE
(FR) PROCÉDÉ ET DISPOSITIF D'ACCÈS À DES DONNÉES
Abstract
(EN)
A data access method provided in embodiments of the present invention is applied to a host, and a virtual machine runs on the host. A processor of the host converts a first descriptor recognized by a virtual machine interface card of the virtual machine into a second descriptor recognized by a physical interface card of the host. The first descriptor includes a virtual machine physical memory address and a data length of accessible data. The physical interface card of the host obtains, based on the second descriptor, a physical address that is in a memory and to which the virtual machine physical memory address is mapped, and accesses the accessible data according to the physical address in the memory.

(FR)
Selon un mode de réalisation, la présente invention concerne un procédé d'accès à des données qui est mis en œuvre dans un ordinateur hôte sur lequel une machine virtuelle est exécutée. Le procédé comprend les étapes suivantes : un processeur d'un ordinateur hôte convertit un premier descripteur reconnu par une carte d'interface de machine virtuelle d'une machine virtuelle en un second descripteur reconnu par une carte d'interface physique de l'ordinateur hôte, le premier descripteur comprenant l'adresse d'une mémoire physique de la machine virtuelle et une longueur de données de données accessibles ; et la carte d'interface physique de l'ordinateur hôte obtient, sur la base du second descripteur, une adresse physique mappée depuis l'adresse de la mémoire physique de la machine virtuelle vers une mémoire, et accède aux données accessibles sur la base de l'adresse physique présente dans la mémoire.

Also published as