Patents by Inventor Travis J. Pizel
Travis J. Pizel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10810122Abstract: Dynamic I/O translation table allocation for SR-IOV enabled I/O adapters including receiving an instruction to transition the SR-IOV adapter to shared mode; determining, using a configuration file for the SR-IOV adapter, memory requirements for an I/O translation table; comparing the memory requirements for the I/O translation table to memory currently allocated for use by the SR-IOV adapter; based on the comparing the memory requirements for the I/O translation table to the memory currently allocated for use by the SR-IOV adapter, determining that the memory currently allocated for use by the SR-IOV adapter is insufficient to store the I/O translation table and determining an additional amount of memory required to store the I/O translation table; and allocating, at runtime, the additional amount of memory for storing the I/O translation table.Type: GrantFiled: November 29, 2018Date of Patent: October 20, 2020Assignee: International Business Machines CorporationInventors: Swathi M. Bhattiprolu, Charles S. Graham, Travis J. Pizel, Timothy J. Schimke
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Publication number: 20200174923Abstract: Dynamic I/O translation table allocation for SR-IOV enabled I/O adapters including receiving an instruction to transition the SR-IOV adapter to shared mode; determining, using a configuration file for the SR-IOV adapter, memory requirements for an I/O translation table; comparing the memory requirements for the I/O translation table to memory currently allocated for use by the SR-IOV adapter; based on the comparing the memory requirements for the I/O translation table to the memory currently allocated for use by the SR-IOV adapter, determining that the memory currently allocated for use by the SR-IOV adapter is insufficient to store the I/O translation table and determining an additional amount of memory required to store the I/O translation table; and allocating, at runtime, the additional amount of memory for storing the I/O translation table.Type: ApplicationFiled: November 29, 2018Publication date: June 4, 2020Inventors: SWATHI M. BHATTIPROLU, CHARLES S. GRAHAM, TRAVIS J. PIZEL, TIMOTHY J. SCHIMKE
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Patent number: 10275362Abstract: A system and method dynamically allocate address translation tables for direct memory access windows by donating logical memory blocks to allocate to the address translation tables. A dynamic address translation table allocation module dynamically changes the allocation of memory to the address translation tables without a platform or partition reboot. A portion of the dynamic address translation table allocation module may reside in the hypervisor and in the partition and communicate to dynamically allocate memory to the address translation tables. The dynamic address translation table allocation module in the partition may donate logical memory blocks to the hypervisor to increase the allocation of memory to the address translation tables.Type: GrantFiled: April 13, 2018Date of Patent: April 30, 2019Assignee: International Business Machines CorporationInventors: Victor A. Garibay, Daniel E. Hurlimann, Chetan Mehta, Travis J. Pizel, Fernando Pizzano, Thomas R. Sand
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Publication number: 20180232317Abstract: A system and method dynamically allocate address translation tables for direct memory access windows by donating logical memory blocks to allocate to the address translation tables. A dynamic address translation table allocation module dynamically changes the allocation of memory to the address translation tables without a platform or partition reboot. A portion of the dynamic address translation table allocation module may reside in the hypervisor and in the partition and communicate to dynamically allocate memory to the address translation tables. The dynamic address translation table allocation module in the partition may donate logical memory blocks to the hypervisor to increase the allocation of memory to the address translation tables.Type: ApplicationFiled: April 13, 2018Publication date: August 16, 2018Inventors: Victor A. Garibay, Daniel E. Hurlimann, Chetan Mehta, Travis J. Pizel, Fernando Pizzano, Thomas R. Sand
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Patent number: 10025725Abstract: A system and method dynamically allocate address translation tables for direct memory access windows by donating logical memory blocks to allocate to the address translation tables. A dynamic address translation table allocation module dynamically changes the allocation of memory to the address translation tables without a platform or partition reboot. A portion of the dynamic address translation table allocation module may reside in the hypervisor and in the partition and communicate to dynamically allocate memory to the address translation tables. The dynamic address translation table allocation module in the partition may donate logical memory blocks to the hypervisor to increase the allocation of memory to the address translation tables.Type: GrantFiled: June 26, 2017Date of Patent: July 17, 2018Assignee: International Business Machines CorporationInventors: VIctor A. Garibay, Daniel E. Hurlimann, Chetan Mehta, Travis J. Pizel, Fernando Pizzano, Thomas R. Sand
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Publication number: 20180113813Abstract: A system and method dynamically allocate address translation tables for direct memory access windows by donating logical memory blocks to allocate to the address translation tables. A dynamic address translation table allocation module dynamically changes the allocation of memory to the address translation tables without a platform or partition reboot. A portion of the dynamic address translation table allocation module may reside in the hypervisor and in the partition and communicate to dynamically allocate memory to the address translation tables. The dynamic address translation table allocation module in the partition may donate logical memory blocks to the hypervisor to increase the allocation of memory to the address translation tables.Type: ApplicationFiled: June 26, 2017Publication date: April 26, 2018Inventors: VIctor A. Garibay, Daniel E. Hurlimann, Chetan Mehta, Travis J. Pizel, Fernando Pizzano, Thomas R. Sand
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Patent number: 9710395Abstract: A system and method dynamically allocate address translation tables for direct memory access windows by donating logical memory blocks to allocate to the address translation tables. A dynamic address translation table allocation module dynamically changes the allocation of memory to the address translation tables without a platform or partition reboot. A portion of the dynamic address translation table allocation module may reside in the hypervisor and in the partition and communicate to dynamically allocate memory to the address translation tables. The dynamic address translation table allocation module in the partition may donate logical memory blocks to the hypervisor to increase the allocation of memory to the address translation tables.Type: GrantFiled: October 26, 2016Date of Patent: July 18, 2017Assignee: International Business Machines CorporationInventors: Vlctor A. Garibay, Daniel E. Hurlimann, Chetan Mehta, Travis J. Pizel, Fernando Pizzano, Thomas R. Sand
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Patent number: 9355052Abstract: A dynamic DMA window mechanism can resize DMA windows dynamically by increasing one DMA window at the expense of reducing a neighboring DMA window. The dynamic DMA window mechanism can decide to dynamically resize DMA windows based on a request from a system administrator, based on a request by an operating system device driver for an I/O adapter, or based on a performance monitor determining such a resizing would benefit system performance. Once one DMA window has been increased by allocating a portion of a donor DMA window, device drivers for the I/O devices corresponding to the two windows are updated to reflect the new DMA window sizes.Type: GrantFiled: August 23, 2013Date of Patent: May 31, 2016Assignee: International Business Machines CorporationInventors: Anjan Kumar Guttahalli Krishna, Travis J. Pizel
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Patent number: 9330037Abstract: A dynamic DMA window mechanism can resize DMA windows dynamically by increasing one DMA window at the expense of reducing a neighboring DMA window. The dynamic DMA window mechanism can decide to dynamically resize DMA windows based on a request from a system administrator, based on a request by an operating system device driver for an I/O adapter, or based on a performance monitor determining such a resizing would benefit system performance. Once one DMA window has been increased by allocating a portion of a donor DMA window, device drivers for the I/O devices corresponding to the two windows are updated to reflect the new DMA window sizes.Type: GrantFiled: April 14, 2014Date of Patent: May 3, 2016Assignee: International Business Machines CorporationInventors: Anjan Kumar Guttahalli Krishna, Travis J. Pizel
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Patent number: 9146863Abstract: A computer-implemented method may include assigning an address translation table to a peripheral component interconnect host bridge and determining that an input/output adapter accessible to the peripheral component interconnect host bridge is configured as a virtualized adapter to provide a plurality of virtual functions to a plurality of logical partitions. In response to determining that the input/output adapter is configured as the virtualized adapter, the address translation table may be subdivided to enable the plurality of virtual functions to access the memory of at least one logical partition of the plurality of logical partitions.Type: GrantFiled: December 8, 2010Date of Patent: September 29, 2015Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Sean T. Brownlow, Gregory M. Nordstrom, Travis J. Pizel
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Patent number: 9104601Abstract: A computing device may merge two translation tables used when performing a DMA operation into a single, combined translation table. To merge the translation tables, the computing device may update a register in the IOMMU to include a pointer to the combined translation table. In addition, the IOMMU may clear one of the registers from having a pointer to one of the merged translation table. Doing so means the entries in this translation table are now no longer assigned. The IOMMU may update the register with the pointer to the combined translation table to include the unassigned entries in the combined translation table. In this manner, the entries from the two translation tables are merged into the single, combined table. The combined translation table may be owned or assigned to a service provider that originally owned one of the merged translation tables or to a completely different service provider.Type: GrantFiled: October 18, 2013Date of Patent: August 11, 2015Assignee: International Business Machines CorporationInventors: Justin K. King, John R. Oberly, III, Travis J. Pizel
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Patent number: 9104600Abstract: A computing device may merge two translation tables used when performing a DMA operation into a single, combined translation table. To merge the translation tables, the computing device may update a register in the IOMMU to include a pointer to the combined translation table. In addition, the IOMMU may clear one of the registers from having a pointer to one of the merged translation table. Doing so means the entries in this translation table are now no longer assigned. The IOMMU may update the register with the pointer to the combined translation table to include the unassigned entries in the combined translation table. In this manner, the entries from the two translation tables are merged into the single, combined table. The combined translation table may be owned or assigned to a service provider that originally owned one of the merged translation tables or to a completely different service provider.Type: GrantFiled: August 22, 2013Date of Patent: August 11, 2015Assignee: International Business Machines CorporationInventors: Justin K. King, John R. Oberly, III, Travis J. Pizel
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Patent number: 9092366Abstract: A computing device may split a translation table used when performing a DMA operation into two different translation tables. To split the translation table, the computing device may update the registers in the IOMMU to include pointers to the two different translation tables. For example, the IOMMU may update one register to point to the same starting address as the original translation table but assign a shorter length (i.e., fewer entries) to that table. The extra entries may then be used to form the other translation table by adding a new pointer to one of the IOMMU registers. The two translation tables may be owned by the same service provider or two different service providers. Alternatively, the computing device may assign the two tables to the same service provider which in turn assigns the tables to respective client devices executed by the service provider.Type: GrantFiled: October 18, 2013Date of Patent: July 28, 2015Assignee: International Business Machines CorporationInventors: Justin K. King, John R. Oberly, III, Travis J. Pizel
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Patent number: 9092365Abstract: A computing device may split a translation table used when performing a DMA operation into two different translation tables. To split the translation table, the computing device may update the registers in the IOMMU to include pointers to the two different translation tables. For example, the IOMMU may update one register to point to the same starting address as the original translation table but assign a shorter length (i.e., fewer entries) to that table. The extra entries may then be used to form the other translation table by adding a new pointer to one of the IOMMU registers. The two translation tables may be owned by the same service provider or two different service providers. Alternatively, the computing device may assign the two tables to the same service provider which in turn assigns the tables to respective client devices executed by the service provider.Type: GrantFiled: August 22, 2013Date of Patent: July 28, 2015Assignee: International Business Machines CorporationInventors: Justin K. King, John R. Oberly, III, Travis J. Pizel
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Publication number: 20150058597Abstract: A computing device may split a translation table used when performing a DMA operation into two different translation tables. To split the translation table, the computing device may update the registers in the IOMMU to include pointers to the two different translation tables. For example, the IOMMU may update one register to point to the same starting address as the original translation table but assign a shorter length (i.e., fewer entries) to that table. The extra entries may then be used to form the other translation table by adding a new pointer to one of the IOMMU registers. The two translation tables may be owned by the same service provider or two different service providers. Alternatively, the computing device may assign the two tables to the same service provider which in turn assigns the tables to respective client devices executed by the service provider.Type: ApplicationFiled: October 18, 2013Publication date: February 26, 2015Applicant: International Business Machines CorporationInventors: Justin K. KING, John R. OBERLY, III, Travis J. PIZEL
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Publication number: 20150058513Abstract: A dynamic DMA window mechanism can resize DMA windows dynamically by increasing one DMA window at the expense of reducing a neighboring DMA window. The dynamic DMA window mechanism can decide to dynamically resize DMA windows based on a request from a system administrator, based on a request by an operating system device driver for an I/O adapter, or based on a performance monitor determining such a resizing would benefit system performance. Once one DMA window has been increased by allocating a portion of a donor DMA window, device drivers for the I/O devices corresponding to the two windows are updated to reflect the new DMA window sizes.Type: ApplicationFiled: April 14, 2014Publication date: February 26, 2015Applicant: International Business Machines CorporationInventors: Anjan Kumar Guttahalli Krishna, Travis J. Pizel
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Publication number: 20150058594Abstract: A computing device may split a translation table used when performing a DMA operation into two different translation tables. To split the translation table, the computing device may update the registers in the IOMMU to include pointers to the two different translation tables. For example, the IOMMU may update one register to point to the same starting address as the original translation table but assign a shorter length (i.e., fewer entries) to that table. The extra entries may then be used to form the other translation table by adding a new pointer to one of the IOMMU registers. The two translation tables may be owned by the same service provider or two different service providers. Alternatively, the computing device may assign the two tables to the same service provider which in turn assigns the tables to respective client devices executed by the service provider.Type: ApplicationFiled: August 22, 2013Publication date: February 26, 2015Applicant: International Business Machines CorporationInventors: Justin K. KING, John R. OBERLY, III, Travis J. PIZEL
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Publication number: 20150058596Abstract: A computing device may merge two translation tables used when performing a DMA operation into a single, combined translation table. To merge the translation tables, the computing device may update a register in the IOMMU to include a pointer to the combined translation table. In addition, the IOMMU may clear one of the registers from having a pointer to one of the merged translation table. Doing so means the entries in this translation table are now no longer assigned. The IOMMU may update the register with the pointer to the combined translation table to include the unassigned entries in the combined translation table. In this manner, the entries from the two translation tables are merged into the single, combined table. The combined translation table may be owned or assigned to a service provider that originally owned one of the merged translation tables or to a completely different service provider.Type: ApplicationFiled: October 18, 2013Publication date: February 26, 2015Applicant: International Business Machines CorporationInventors: Justin K. KING, John R. OBERLY, III, Travis J. PIZEL
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Publication number: 20150058512Abstract: A dynamic DMA window mechanism can resize DMA windows dynamically by increasing one DMA window at the expense of reducing a neighboring DMA window. The dynamic DMA window mechanism can decide to dynamically resize DMA windows based on a request from a system administrator, based on a request by an operating system device driver for an I/O adapter, or based on a performance monitor determining such a resizing would benefit system performance. Once one DMA window has been increased by allocating a portion of a donor DMA window, device drivers for the I/O devices corresponding to the two windows are updated to reflect the new DMA window sizes.Type: ApplicationFiled: August 23, 2013Publication date: February 26, 2015Applicant: International Business Machines CorporationInventors: Anjan Kumar Guttahalli Krishna, Travis J. Pizel
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Publication number: 20150058593Abstract: A computing device may merge two translation tables used when performing a DMA operation into a single, combined translation table. To merge the translation tables, the computing device may update a register in the IOMMU to include a pointer to the combined translation table. In addition, the IOMMU may clear one of the registers from having a pointer to one of the merged translation table. Doing so means the entries in this translation table are now no longer assigned. The IOMMU may update the register with the pointer to the combined translation table to include the unassigned entries in the combined translation table. In this manner, the entries from the two translation tables are merged into the single, combined table. The combined translation table may be owned or assigned to a service provider that originally owned one of the merged translation tables or to a completely different service provider.Type: ApplicationFiled: August 22, 2013Publication date: February 26, 2015Applicant: International Business Machines CorporationInventors: Justin K. KING, John R. OBERLY, III, Travis J. PIZEL