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    • 5. 发明申请
    • OPERATING SYSTEM VIRTUAL MEMORY MANAGEMENT FOR HARDWARE TRANSACTIONAL MEMORY
    • 操作系统硬件事务存储器虚拟内存管理
    • US20100332721A1
    • 2010-12-30
    • US12493161
    • 2009-06-26
    • Koichi YamadaGad SheafferAli-Reza Adl-TabatabaiLandy WangMartin TailleferArun KishanDavid CallahanJan GrayVadim Bassin
    • Koichi YamadaGad SheafferAli-Reza Adl-TabatabaiLandy WangMartin TailleferArun KishanDavid CallahanJan GrayVadim Bassin
    • G06F12/08
    • G06F12/1045G06F12/0815
    • Operating system virtual memory management for hardware transactional memory. A method may be performed in a computing environment where an application running on a first hardware thread has been in a hardware transaction, with transactional memory hardware state in cache entries correlated by memory hardware when data is read from or written to data cache entries. The data cache entries are correlated to physical addresses in a first physical page mapped from a first virtual page in a virtual memory page table. The method includes an operating system deciding to unmap the first virtual page. As a result, the operating system removes the mapping of the first virtual page to the first physical page from the virtual memory page table. As a result, the operating system performs an action to discard transactional memory hardware state for at least the first physical page. Embodiments may further suspend hardware transactions in kernel mode. Embodiments may further perform soft page fault handling without aborting a hardware transaction, resuming the hardware transaction upon return to user mode, and even successfully committing the hardware transaction.
    • 硬件事务内存的操作系统虚拟内存管理。 可以在运行在第一硬件线程上的应用程序已经处于硬件事务中的计算环境中执行一种方法,当数据从数据高速缓存条目读取或写入数据高速缓存条目时,高速缓存条目中的事务性存储器硬件状态由存储器硬件相关联。 数据高速缓存条目与从虚拟存储器页表中的第一虚拟页面映射的第一物理页面中的物理地址相关联。 该方法包括决定取消映射第一虚拟页面的操作系统。 结果,操作系统从虚拟存储器页表移除第一虚拟页面到第一物理页面的映射。 结果,操作系统执行至少第一物理页丢弃事务存储器硬件状态的动作。 实施例可以进一步挂起内核模式下的硬件事务。 实施例可以进一步执行软页错误处理,而不中止硬件事务,在返回到用户模式时恢复硬件事务,甚至成功地提交硬件事务。