APPARATUS, METHOD, AND SYSTEM FOR PROCESSOR NON-WRITE-BACK CAPABILITY

To provide a method for allowing software to selectively disable non-write-back lock accesses.SOLUTION: A hardware processor 100 includes: a plurality of logical processors; a control register 110 comprising a non-write-back lock disable bit; a cache 128 shared by the plurality of logical processors...

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Main Authors HISHAM SHAFI, VEDVYAS SHANBHOGUE, JAMES A COLEMAN, GILBERT NEIGER
Format Patent
LanguageEnglish
Japanese
Published 08.04.2021
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Abstract To provide a method for allowing software to selectively disable non-write-back lock accesses.SOLUTION: A hardware processor 100 includes: a plurality of logical processors; a control register 110 comprising a non-write-back lock disable bit; a cache 128 shared by the plurality of logical processors; and a memory controller 130 to disable a non-write-back lock access of the bus for a read-modify-write type of the memory request issued by a logical processor of the plurality of logical processors when the non-write-back lock disable bit is set to a first value; and implement the non-write-back lock access of the bus for the read-modify-write type of the memory request when the non-write-back lock disable bit is set to a second value.SELECTED DRAWING: Figure 1 【課題】ソフトウェアがノンライトバックロックアクセスを選択的に無効にすることを可能にする方法を提供する。【解決手段】ハードウェアプロセッサ100は、複数の論理プロセッサと、ノンライトバックロック無効化ビットを備える制御レジスタ110と、複数の論理プロセッサによって共有されるキャッシュ128と、ノンライトバックロック無効化ビットが第1の値に設定されている場合に、複数の論理プロセッサのうちの論理プロセッサによって発行されたメモリ要求の読み取り−変更−書き込みタイプのバスのノンライトバックロックアクセスを無効にし、ノンライトバックロック無効化ビットが第2の値に設定されている場合に、メモリ要求の読み取り−変更−書き込みタイプのバスのノンライトバックロックアクセスを実装するメモリコントローラ130と、を備える。【選択図】図1
AbstractList To provide a method for allowing software to selectively disable non-write-back lock accesses.SOLUTION: A hardware processor 100 includes: a plurality of logical processors; a control register 110 comprising a non-write-back lock disable bit; a cache 128 shared by the plurality of logical processors; and a memory controller 130 to disable a non-write-back lock access of the bus for a read-modify-write type of the memory request issued by a logical processor of the plurality of logical processors when the non-write-back lock disable bit is set to a first value; and implement the non-write-back lock access of the bus for the read-modify-write type of the memory request when the non-write-back lock disable bit is set to a second value.SELECTED DRAWING: Figure 1 【課題】ソフトウェアがノンライトバックロックアクセスを選択的に無効にすることを可能にする方法を提供する。【解決手段】ハードウェアプロセッサ100は、複数の論理プロセッサと、ノンライトバックロック無効化ビットを備える制御レジスタ110と、複数の論理プロセッサによって共有されるキャッシュ128と、ノンライトバックロック無効化ビットが第1の値に設定されている場合に、複数の論理プロセッサのうちの論理プロセッサによって発行されたメモリ要求の読み取り−変更−書き込みタイプのバスのノンライトバックロックアクセスを無効にし、ノンライトバックロック無効化ビットが第2の値に設定されている場合に、メモリ要求の読み取り−変更−書き込みタイプのバスのノンライトバックロックアクセスを実装するメモリコントローラ130と、を備える。【選択図】図1
Author HISHAM SHAFI
JAMES A COLEMAN
VEDVYAS SHANBHOGUE
GILBERT NEIGER
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Snippet To provide a method for allowing software to selectively disable non-write-back lock accesses.SOLUTION: A hardware processor 100 includes: a plurality of...
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SubjectTerms CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
Title APPARATUS, METHOD, AND SYSTEM FOR PROCESSOR NON-WRITE-BACK CAPABILITY
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