Function transfer using virtualized mapping

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9256559
APP PUB NO 20150052279A1
SERIAL NO

13969664

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present disclosure includes a method for migration of a first virtual function of a first device located on a PCI bus and accessible by a device driver using a virtual address. A second virtual function is created on a second device. A base address is determined for the second virtual function as a function of a logical location of the second device within the PCI structure. An offset is determined for the second virtual function as a function of the base address and the virtual address. The device driver is notified that the first virtual function is on hold. The offset is stored in a translation table. The device driver is notified that the hold has been lifted. Accesses to the virtual address and by the device driver to memory of the second virtual function are routed based upon the offset in the translation table.

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Patent Owner(s)

  • INTERNATIONAL BUSINESS MACHINES CORPORATION

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hart, Brian W Austin, US 48 311
Jiang, Liang Austin, US 92 784
Kalavakolanu, Anil Austin, US 57 281
Moore, Shannon D Pflugerville, US 2 30
Wallis, Robert E Austin, US 4 30
Yeung, Evelyn T Round Rock, US 7 68

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