Michael R Swift

US Patent:

20210064539, Mar 4, 2021

Filed:

May 15, 2020

Appl. No.:

16/874997

Inventors:

- Cupertino CA, US
Bernard Joseph Semeria - Palo Alto CA, US
Michael J. Swift - Brooklyn NY, US
Pradeep Kanapathipillai - Santa Clara CA, US
David J. Williamson - Austin TX, US

International Classification:

G06F 12/1009
G06F 12/1072
G06F 12/0873
G06F 12/14

Abstract:

A system and method for efficiently transferring address mappings and data access permissions corresponding to the address mappings. A computing system includes at least one processor and memory for storing a page table. In response to receiving a memory access operation comprising a first address, the address translation unit is configured to identify a data access permission based on a permission index corresponding to the first address, and access data stored in a memory location of the memory identified by a second address in a manner defined by the retrieved data access permission. The address translation unit is configured to access a table to identify the data access permission, and is configured to determine the permission index and the second address based on the first address. A single permission index may correspond to different permissions for different entities within the system.

US Patent:

20180181491, Jun 28, 2018

Filed:

Dec 22, 2016

Appl. No.:

15/389153

Inventors:

- Cupertino CA, US
Luc R. Semeria - Palo Alto CA, US
Gokhan Avkarogullari - Cupertino CA, US
David A. Gotwalt - Winter Springs FL, US
Robert S. Hartog - Windermere FL, US
Michael J. Swift - San Francisco CA, US

International Classification:

G06F 12/0891
G06F 12/0895

Abstract:

Techniques are disclosed relating to flushing cache lines. In some embodiments, a graphics processing unit includes a cache and one or more storage elements configured to store a plurality of command buffers that include instructions executable to manipulate data stored in the cache. In some embodiments, ones of the cache lines in the cache are configured to store data to be operated on by instructions in the command buffers and a first tag portion that identifies a command buffer that has stored data in the cache line. In some embodiments, the graphics processing unit is configured to receive a request to flush cache lines that store data of a particular command buffer, and to flush ones of the cache lines having first tag portions indicating the particular command buffer as having data stored in the cache lines while maintaining data stored in other ones of the cache lines as valid.

Address:

3112 Rolling Mdw Ct, Monrovia, MD 21770

Phone:

3015601628

VIN:

5J6RE4H77BL044722

Make:

HONDA

Model:

CR-V

Year:

2011