发明申请
- 专利标题: INSTRUCTIONS AND LOGIC TO INTERRUPT AND RESUME PAGING IN A SECURE ENCLAVE PAGE CACHE
- 专利标题(中): 指令和逻辑中断和恢复寻呼在安全的页面缓存
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申请号: US14318508申请日: 2014-06-27
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公开(公告)号: US20150378941A1公开(公告)日: 2015-12-31
- 发明人: Carlos V. Rozas , Ilya Alexandrovich , Gilbert Neiger , Francis X. McKeen , Ittai Anati , Vedvyas Shanbhogue , Shay Gueron
- 申请人: Carlos V. Rozas , Ilya Alexandrovich , Gilbert Neiger , Francis X. McKeen , Ittai Anati , Vedvyas Shanbhogue , Shay Gueron
- 主分类号: G06F13/24
- IPC分类号: G06F13/24 ; G06F12/08
摘要:
Instructions and logic interrupt and resume paging in secure enclaves. Embodiments include instructions, specify page addresses allocated to a secure enclave, the instructions are decoded for execution by a processor. The processor includes an enclave page cache to store secure data in a first cache line and in a last cache line for a page corresponding to the page address. A page state is read from the first or last cache line for the page when an entry in an enclave page cache mapping for the page indicates only a partial page is stored in the enclave page cache. The entry for a partial page may be set, and a new page state may be recorded in the first cache line when writing-back, or in the last cache line when loading the page when the instruction's execution is being interrupted. Thus the writing-back, or loading can be resumed.
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