- 专利标题: Creating a dynamic address translation with translation exception qualifiers
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申请号: US15645819申请日: 2017-07-10
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公开(公告)号: US10241910B2公开(公告)日: 2019-03-26
- 发明人: Dan F Greiner , Lisa C Heller , Damian L Osisek , Erwin Pfeffer
- 申请人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 申请人地址: US NY Armonk
- 专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人: INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址: US NY Armonk
- 代理机构: Heslin Rothenberg Farley & Mesiti P.C.
- 代理商 Steven Chiu, Esq.; Blanche E. Schiller, Esq.
- 主分类号: G06F12/10
- IPC分类号: G06F12/10 ; G06F9/455 ; G06F12/02 ; G06F3/06 ; G06F12/1036 ; G06F12/1009 ; G06F12/109
摘要:
An enhanced dynamic address translation facility product is created such that, in one embodiment, a virtual address to be translated and an initial origin address of a translation table of the hierarchy of translation tables are obtained. Dynamic address translation of the virtual address proceeds. In response to a translation interruption having occurred during dynamic address translation, bits are stored in a translation exception qualifier (TXQ) field to indicate that the exception was either a host DAT exception having occurred while running a host program or a host DAT exception having occurred while running a guest program. The TXQ is further capable of indicating that the exception was associated with a host virtual address derived from a guest page frame real address or a guest segment frame absolute address. The TXQ is further capable of indicating that a larger or smaller host frame size is preferred to back a guest frame.
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