EXTENDED PAGE TABLE FOR I/O ADDRESS TRANSLATION
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United States of America Patent
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app pub date -
Sep 30, 2014
filing date -
Mar 14, 2014
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Abstract
Embodiments are directed to a method and a computer program product for extending a page table. In an embodiment, the method comprises receiving, by a host bridge, a request. The method further comprises determining, by the host bridge, that access to a memory address space referenced by the request is authorized based on a requester identifier associated with the request. Based on determining that access to the memory address space is authorized, the method comprises accessing, by the host bridge, a page included in the memory address space based on a combination of: a start of the page table and a single extended index.
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