Oracle International Corporation

Oracle America, Inc.

John B Levon

Christoph L Schuba

A method for logging into a guest virtual environment (VE) from a host VE. The method includes receiving a request to login into the guest VE from the host VE. In response to the request, creating a virtual terminal driver (VTD). The VTD comprises a host extender located in the host VE and a guest extender located in a sub-host VE. The host VE and sub-host VE are configured to communicate using a master terminal and a slave terminal. Providing the guest extender to the third VE as a virtual serial terminal (VST). Logging into the guest VE using the master terminal, the slave terminal, a virtual environment manager (VEM), and the VTD, where the VEM is managing the guest VE.

Method and system for logging into a virtual environment executing on a host

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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Manchester, United Kingdom

John B Levon