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Silent store detection and recording in memory storage

United States Patent

March 7, 2017
View the Complete Patent at the US Patent & Trademark Office
An aspect includes receiving a write request that includes a memory address and write data. Stored data is read from a memory location at the memory address. Based on determining that the memory location was not previously modified, the stored data is compared to the write data. Based on the stored data matching the write data, the write request is completed without writing the write data to the memory and a corresponding silent store bit, in a silent store bitmap is set. Based on the stored data not matching the write data, the write data is written to the memory location, the silent store bit is reset and a corresponding modified bit is set. At least one of an application and an operating system is provided access to the silent store bitmap.
Bose; Pradip (Yorktown Heights, NY), Cher; Chen-Yong (Port Chester, NY), Nair; Ravi (Briarcliff Manor, NY)
14/ 948,725
November 23, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under B599858 awarded by Department of Energy. The Government has certain rights to this invention.