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-<p style="text-align: justify;" class="MsoNormal"><span style= -"font-size: 10pt;"><span style=""> </span> Write history queue is used to -save the data in memory that is overwritten by post-checkpoint store -operations. After a checkpoint is taken, every subsequent store operation will -cause the old data and its memory address to be stored in the write history -queue. The WHQ will ignore further writes to the same address as we are only -concern with the original value to perform a rollback.<span style= -""> </span></span></p> -<p style="text-align: justify;" class="MsoNormal"><span style= -"font-size: 10pt;"><span style=""> </span> When a checkpoint is committed, -the data and address stored in the write history queue will be dumped. However, -on the event of a rollback, the data in the queue will be written back into the +<p class="MsoNormal" style="text-align: justify;"><span style= +"font-size: 10pt;"><span style=""> </span>Write history queue is used to save +the data in memory that is overwritten by post-checkpoint store operations. +After a checkpoint is taken, every subsequent store operation will cause the +old data and its memory address to be stored in the write history queue. The +WHQ will ignore further writes to the same address as we are only concern with +the original value to perform a rollback.<span style=""> </span></span></p> +<p class="MsoNormal" style="text-align: justify;"><span style= +"font-size: 10pt;"><span style=""> </span>When a checkpoint is committed, the +data and address stored in the write history queue will be dumped. However, on +the event of a rollback, the data in the queue will be written back into the memory at the corresponding addresses. In addition, all caches in the higher hierarchy have to be flushed.</span></p> -<p style="text-align: justify;" class="MsoNormal"><span style= -"font-size: 10pt;"><span style=""> </span> This design allows quick -checkpoint taking and checkpoint committing. However, it has a terrible -rollback performance and might be slower during speculative mode compared to -the other methods since it allows writes to the main memory.</span></p> +<p class="MsoNormal" style="text-align: justify;"><span style= +"font-size: 10pt;"><span style=""> </span>This design allows quick checkpoint +taking and checkpoint committing. However, it has a terrible rollback +performance and might be slower during speculative mode compared to the other +methods since it allows writes to the main memory.</span></p> +<p class="MsoNormal" style="text-align: justify;"> </p> +<p class="MsoNormal" style="text-align: justify;"><span style= +"font-size: 10pt;">Forceload in assembler</span></p> +<p class="MsoNormal" style="text-align: justify;"> </p>
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