JP2015500524A - 効率的なメモリ及びリソース管理 - Google Patents
効率的なメモリ及びリソース管理 Download PDFInfo
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- JP2015500524A JP2015500524A JP2014544777A JP2014544777A JP2015500524A JP 2015500524 A JP2015500524 A JP 2015500524A JP 2014544777 A JP2014544777 A JP 2014544777A JP 2014544777 A JP2014544777 A JP 2014544777A JP 2015500524 A JP2015500524 A JP 2015500524A
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/20—Handling requests for interconnection or transfer for access to input/output bus
- G06F13/28—Handling requests for interconnection or transfer for access to input/output bus using burst mode transfer, e.g. direct memory access DMA, cycle steal
-
- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/10—Address translation
- G06F12/1009—Address translation using page tables, e.g. page table structures
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/10—Address translation
- G06F12/1081—Address translation for peripheral access to main memory, e.g. direct memory access [DMA]
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- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/10—Address translation
- G06F12/109—Address translation for multiple virtual address spaces, e.g. segmentation
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- G—PHYSICS
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- G06F2212/00—Indexing scheme relating to accessing, addressing or allocation within memory systems or architectures
- G06F2212/15—Use in a specific computing environment
- G06F2212/151—Emulated environment, e.g. virtual machine
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- Engineering & Computer Science (AREA)
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- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Memory System Of A Hierarchy Structure (AREA)
Abstract
Description
発明の概要及び要約は、本発明者によって企図される本発明の1つ以上ではあるが全てではない例示的な実施形態を示しており、したがって、本発明及び添付の特許請求の範囲を如何様にも限定することを意図するものではない。
Claims (12)
- メモリ内のデータへのアクセスに関連するポインタを、入出力メモリ管理ユニット(IOMMU)を介して入出力(I/O)デバイスに送ることであって、前記I/Oデバイスは、前記データをローカルI/Oデバイスメモリにコピーすることなく、前記IOMMUを介して前記メモリ内の前記データにアクセスすることと、
前記I/Oデバイスによって、前記ポインタに基づいて前記メモリ内の前記データに関する操作を行うことと、を含む、
方法。 - 前記IOMMUは、ハイパーバイザ又はゲストオペレーティングシステム(OS)による介入を必要とすることなく、前記ポインタを送るように構成されている、請求項1に記載の方法。
- 前記ポインタは、前記I/Oデバイスによって使用できるように構成されており、プロセスは、前記ポインタを再構成することなく、仮想マシンにおいて作動する、請求項1に記載の方法。
- 前記I/Oデバイスによって、前記IOMMUと関連付けられたネスト型ページングトランザクションを使用して、前記メモリ内の前記データを操作することをさらに含む、請求項1に記載の方法。
- 前記データは、画像データを含む、請求項1に記載の方法。
- 前記メモリ及び前記I/Oデバイスは、同じゲスト仮想アドレス空間から動作して、前記ゲストOSによる前記メモリ内の前記データの直接操作を提供する、請求項1に記載の方法。
- 入出力メモリ管理ユニット(IOMMU)を備え、
前記IOMMUは、
メモリ内のデータへのアクセスと関連付けられたポインタを、入出力(I/O)デバイスに送ることであって、前記I/Oデバイスは、前記データをローカルI/Oデバイスメモリにコピーすることなく、前記IOMMUを介して前記メモリ内の前記データにアクセスすること、を行うように構成されており、
前記ポインタは、前記I/Oデバイスが前記メモリ内の前記データに関する操作を行うことを可能にするように構成されている、
装置。 - 前記IOMMUは、ハイパーバイザ又はゲストオペレーティングシステム(OS)による介入を必要とすることなく、前記ポインタを送るように構成されている、請求項7に記載の装置。
- 前記ポインタは、前記I/Oデバイスによって使用できるように構成されており、プロセスは、前記ポインタを再構成することなく、仮想マシンにおいて作動する、請求項7に記載の装置。
- 前記IOMMUと関連付けられたネスト型ページングトランザクションは、前記I/Oデバイスが前記メモリ内の前記データを操作することを可能にする、請求項7に記載の装置。
- 前記メモリ内の前記データは、画像データを含む、請求項7に記載の装置。
- 前記メモリ及び前記I/Oデバイスは、同じゲスト仮想アドレス空間から動作して、前記ゲストOSによる前記メモリ内の前記データの直接操作を提供する、請求項7に記載の装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US13/308,211 US8719464B2 (en) | 2011-11-30 | 2011-11-30 | Efficient memory and resource management |
US13/308,211 | 2011-11-30 | ||
PCT/US2012/065860 WO2013081884A1 (en) | 2011-11-30 | 2012-11-19 | Efficient memory and resource management |
Publications (3)
Publication Number | Publication Date |
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JP2015500524A true JP2015500524A (ja) | 2015-01-05 |
JP2015500524A5 JP2015500524A5 (ja) | 2016-01-14 |
JP5870206B2 JP5870206B2 (ja) | 2016-02-24 |
Family
ID=47436175
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014544777A Active JP5870206B2 (ja) | 2011-11-30 | 2012-11-19 | 効率的なメモリ及びリソース管理 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8719464B2 (ja) |
EP (1) | EP2786259A1 (ja) |
JP (1) | JP5870206B2 (ja) |
KR (1) | KR101861297B1 (ja) |
CN (1) | CN104040518B (ja) |
WO (1) | WO2013081884A1 (ja) |
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JP5870206B2 (ja) | 2016-02-24 |
KR20140102695A (ko) | 2014-08-22 |
US8719464B2 (en) | 2014-05-06 |
WO2013081884A1 (en) | 2013-06-06 |
EP2786259A1 (en) | 2014-10-08 |
KR101861297B1 (ko) | 2018-05-25 |
US20130138840A1 (en) | 2013-05-30 |
CN104040518B (zh) | 2016-11-16 |
CN104040518A (zh) | 2014-09-10 |
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