Method and system for cross-domain data sharing
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United States of America Patent
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Oct 11, 2011
Grant Date -
Dec 17, 2009
app pub date -
Jun 12, 2008
filing date -
Jun 12, 2008
priority date (Note) -
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Abstract
A method for sharing data between a first domain and a second domain, including issuing a first request for data from a storage pool by the first domain, receiving the first request by a control domain driver in a control domain, obtaining the data by the control domain driver, storing a first copy of the data in shared memory at a first physical address, updating a hypervisor page map to include an entry associating a first pseudo-physical page number with the first physical address, notifying the first domain that the first request has been completed, issuing a second request for the data by the second domain, receiving the second request by the control domain driver, determining that the first copy of the data is present in the shared memory, and updating the hypervisor page map to include an entry associating the second pseudo-physical page number with the first physical address.
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