JP2009506462A - 多層仮想化メカニズムを用いた階層的な仮想化 - Google Patents
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Abstract
【選択図】図4B
Description
この概要が、請求項記載対象の重要な特色又は本質的な特徴を特定することを意図せず、また援助として請求項記載対象の範囲を決定するときに使用されることも意図しない。
概要
以下に提供される説明は最初に、仮想マシンの一般的で簡潔な論述と共に始める。次に多層仮想化メカニズムを用いた階層的な仮想化の論述に焦点を移す。階層的な仮想化に関連する特徴について論述し、そこでは1つのパーティションのハイパーバイザによって維持され、パーティションに含まれる仮想化スタックが、別のパーティションを生成及び制御できる。あるいはまた、パーティションは更なるパーティションを作成及び制御可能な2つ以上の仮想化スタックを有し得る。いずれの場合でも、ハイパーバイザは、第1の場所においてパーティションそれぞれを認識しているので、ハイパーバイザは、階層構造内のパーティションそれぞれと直接に通信できる。最後に階層的な仮想化を可能にするメカニズムをまず、それをハイパーバイザマイクロカーネルと仮想化スタックに分けて1つづつ論述する。これらの2つの要素とコンポーネントそれぞれを順に更に詳細に論述する。
仮想マシン
図1は、計算機システムの仮想化された環境のためのハードウェア及びソフトウェアアーキテクチャの論理的なレイヤを表す図である。本図においては、仮想化プログラム(110)は、物理的なハードウェアアーキテクチャ(112)上で直接又は間接に動作する。仮想化プログラム(110)は、ハイパーバイザコンポーネントを有するホストオペレーティングシステム又はホストオペレーティングシステムと並列に動作する(1つの)仮想マシンモニタであり得、ハイパーバイザコンポーネントが仮想化を実行する。仮想化プログラム(110)は、(このコンポーネントがパーティション又は「仮想マシン」という事実を例示するために破線として表示される)ゲストハードウェアアーキテクチャ(108)を仮想化し、これはすなわち実際に存在しないが、代わりに仮想化プログラム(110)によって仮想化されたハードウェアである。ゲストオペレーティングシステム(106)は、ゲストハードウェアアーキテクチャ(108)上で動作し、ソフトウェアアプリケーション(104)は、ゲストオペレーティングシステム(106)上で動作する。図1の仮想化された動作環境においては、通常、ホストオペレーティングシステム及びハードウェアアーキテクチャ(112)と互換性のないオペレーティングシステム上でソフトウェアアプリケーション(104)が動くように設計されていても、ソフトウェアアプリケーション(104)は、計算機システム(102)において動作できる。
多層仮想マシンモニタを用いた階層的な仮想化
階層的な仮想化は、仮想マシンモニタ(VMM)又はハイパーバイザ形式における多層仮想化メカニズムで達成され得る。例えば、モノリシックなハイパーバイザの使用を介する伝統的に提供される機能性は、ハードウェア上で直接に動作するマイクロカーネル及びパーティション内で動作する仮想化スタックに分けられる。この種類の多層アーキテクチャは、パーティション内の仮想化スタックが、別のパーティションを生成し、制御(又は簡単に言うと「維持」)し、そしてこれらのパーティションもまた別のパーティションを更に維持できる別の仮想化スタックを含み得るという点において、階層的な仮想化を可能にする。重要なことに、この種類の構造は典型的な「ネストされた」再帰的な仮想化と異なり、その性能を改善する。
マイクロカーネルハイパーバイザ及び仮想化サービス
前述のように、階層的な仮想化がマイクロカーネル化ハイパーバイザ兼仮想化スタックアーキテクチャによって支援される。図7は、ハイパーバイザマイクロカーネル(702)を含むハイパーバイザコンポーネント及びハイパーバイザ内の仮想化サービス(704)に焦点を結ぶ(以下の図8は仮想化スタックアーキテクチャを焦点を結ぶ)。
仮想化スタックコンポーネント
本開示の別の特徴においては、図8は仮想化スタック及びお互いにそれらの相互関係を作り出す多様なコンポーネントを表示する。本明細書に開示されない、いくつかの関連コンポーネントは、2005年3月11日に出願された関連出願シリアル番号11/078,141題名:「SYSTEMS AND METHODS FOR MULTI-LEVEL INTERCEPT PROCESSING IN A VIRTUAL MACHINE ENVIRONMENT」において調べられ得る。この出願において開示された「外部モニタ」は、本願において論述された仮想化スタックのサブコンポーネントである。
Claims (20)
- 階層的な仮想化を提供するための方法であって、
ハイパーバイザ(600)を用いて第1のパーティション(608)を維持するステップと、
前記第1のパーティション(608)内の第1の仮想化スタック(602)を使用し、第2のパーティション(606)と対話するステップであって、前記ハイパーバイザ(600)が、前記第1のパーティション(608)及び前記第2のパーティション(606)を認識しているもの、を含む方法。 - 前記ハイパーバイザ(400)が更に、前記第1のパーティション(406)及び前記第2のパーティション(414)内の少なくとも1つのリソース(416)を認識していて、リクエストされたとき、前記ハイパーバイザ(400)が、前記少なくとも1つのリソース(416)を列挙するように構成されること、を特徴とする請求項1記載の方法。
- 前記第2のパーティション(606)が、前記ハイパーバイザ(600)と直接に通信すること、を特徴とする請求項1記載の方法。
- 前記第1の仮想化スタック(602)が、前記第2のパーティション(606)を生成すること、を特徴とする請求項1記載の方法。
- 前記第2のパーティション(606)が、第3のパーティション(605)を作成し対話するように構成される第2の仮想化スタック(610)を含むこと、を特徴とする請求項4記載の方法。
- 前記第1のパーティション(508)が、前記第1の仮想化スタック(502)を含んでいて、第2の仮想化スタック(503)もまた含んでいて、少なくとも任意の期間、前記第1の仮想化スタック(502)及び前記第2の仮想化スタック(503)が、前記第1のパーティション(508)内に同時に含まれること、を特徴とする請求項1記載の方法。
- 前記第1の仮想化スタック(508)が、前記第2のパーティション(504)及び第3パーティション(506)を生成すること、を特徴とする請求項1記載の方法。
- セキュアで階層的な仮想化を提供するための方法であって、
親パーティション(404)を提供するステップであって、前記親パーティション(404)が、仮想化スタック(402)を有するものと、
子パーティション(406)を提供するステップであって、前記子パーティション(406)が、前記親パーティション(404)内の前記仮想化スタック(402)によって生成され、前記子パーティション(406)が、少なくとも前記子パーティション(406)によって排他的に制御されるリソース(414)を有するものと、を含む方法。 - 前記リソース(414)が、少なくとも1つのメモリページを含むこと、を特徴とする請求項8記載の方法。
- 前記子パーティション(406)が、前記親パーティション(404)へのリクエスト(410)を作成することによって前記リソース(414)の排他制御を取得すること、を特徴とする請求項8記載の方法。
- ハイパーバイザ(400)が、前記子パーティション(406)によって作成された前記リクエスト(410)に前記親パーティション(404)が応じたことを検証する(412)こと、を特徴とする請求項10記載の方法。
- 前記子パーティション(406)によって作成される前記リクエスト(410)が、前記子パーティション(406)内のオペレーティングシステムカーネルによって作成されること、を特徴とする請求項10記載の方法。
- 前記子パーティション(406)によって作成される前記リクエスト(410)が、前記子パーティション(406)内のドライバによって作成されること、を特徴とする請求項10記載の方法。
- 前記子パーティション(406)によって作成される前記リクエスト(410)が、前記親パーティション(404)内のブートローダに対して作成されること、を特徴とする請求項10記載の方法。
- 計算機が実行可能であって、階層的な仮想化を提供する命令を担持する計算機可読メディアであって、
第2のパーティション(604)を生成するために第1パーティション(608)を使用することであって、前記第2のパーティション(604)が、前記第1のパーティション(608)内の仮想化スタック(602)によって生成されるものと、
前記第1のパーティション(608)及び前記第2のパーティション(604)と直接に対話するように構成されるマイクロカーネルハイパーバイザ(600)を提供すること、を含む計算機可読メディア。 - 前記第1のパーティション(608)内の前記仮想化スタック(602)が更に、第3のパーティション(606)を生成すること、を特徴とする請求項15記載の計算機可読メディア。
- 更に、前記第1のパーティション(508)内に配置される第2の仮想化スタック(503)を含んでいて、前記第2の仮想化スタック(503)が、第3のパーティション(505)を生成するもの、を特徴とする請求項15記載の計算機可読メディア。
- 前記第2のパーティション(606)が、それ自身の仮想化スタック(610)を有すること、を特徴とする請求項15記載の計算機可読メディア。
- 前記第2のパーティション(606)内の前記仮想化スタック(610)が、第3のパーティション(605)を作成すること、を特徴とする請求項18記載の計算機可読メディア。
- 前記第1のパーティション(608)内の前記仮想化スタック(602)及び前記第2のパーティション(606)内の仮想化スタック(610)が、実質上少なくとも任意の期間共存すること、を特徴とする請求項18記載計算機可読メディア。
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US11/215,380 US8327353B2 (en) | 2005-08-30 | 2005-08-30 | Hierarchical virtualization with a multi-level virtualization mechanism |
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AU2006284910A1 (en) | 2007-03-08 |
BRPI0615278A2 (pt) | 2011-05-17 |
US8327353B2 (en) | 2012-12-04 |
MX2008002497A (es) | 2008-04-10 |
US20070050764A1 (en) | 2007-03-01 |
CN101253481B (zh) | 2012-07-04 |
NO20080757L (no) | 2008-03-05 |
NO340567B1 (no) | 2017-05-15 |
WO2007027739A1 (en) | 2007-03-08 |
CA2620087A1 (en) | 2007-03-08 |
RU2398267C2 (ru) | 2010-08-27 |
KR20080047372A (ko) | 2008-05-28 |
EP1922619B1 (en) | 2016-11-02 |
RU2008107734A (ru) | 2009-09-10 |
EP1922619A1 (en) | 2008-05-21 |
AU2006284910B2 (en) | 2011-01-20 |
TW200729038A (en) | 2007-08-01 |
EP1922619A4 (en) | 2009-01-07 |
CN101253481A (zh) | 2008-08-27 |
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