Translated memory protection apparatus for an advanced...

G - Physics – 06 – F

Patent

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G06F 12/00 (2006.01) G06F 9/38 (2006.01) G06F 9/455 (2006.01) G06F 12/14 (2006.01) G06F 12/16 (2006.01) G06F 13/00 (2006.01)

Patent

CA 2283560

A method of responding to an attempt to write a memory address including a target instruction which has been translated to a host instruction for execution by a host processor including the steps of marking a memory address including a target instruction which has been translated to a host instruction, detecting a memory address which has been marked when an attempt is made to write to the memory address, and responding to the detection of a memory address which has been marked by protecting a target instruction at the memory address until it has been assured that translations associated with the memory address will not be utilized before being updated.

L'invention traite d'un procédé permettant de répondre à une tentative d'écriture au niveau d'une adresse en mémoire comportant une instruction cible qui a été traduite en instruction hôte en vue de son exécution par un processeur hôte. Ce procédé consiste à marquer une adresse en mémoire comportant une instruction cible qui a été traduite en instruction hôte; à déceler une adresse en mémoire qui a été marquée lors d'une tentative d'écriture au niveau de cette adresse en mémoire; et à répondre à la détection d'une adresse en mémoire marquée en protégeant une instruction cible située au niveau de l'adresse en mémoire jusqu'à ce qu'il soit certain que les traductions associées à ladite adresse en mémoire ne seront pas utilisées avant d'avoir été mises à jour.

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