US 12,360,903 B2
Cache coherence using dynamic coarse-grained tracking
Dimitrios Kaseridis, Austin, TX (US); and Mukund Ramakrishna, Austin, TX (US)
Assigned to Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on May 31, 2023, as Appl. No. 18/326,147.
Prior Publication US 2024/0403219 A1, Dec. 5, 2024
Int. Cl. G06F 12/0831 (2016.01); G06F 12/0817 (2016.01)
CPC G06F 12/0828 (2013.01) [G06F 12/0831 (2013.01); G06F 2212/621 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method, comprising:
receiving a request for allocating an incoming cacheline to one of a plurality of SFT entries in a snoop filter (SFT);
performing a tag lookup function for a tag of the incoming cacheline in the SFT,
in response to determining that the incoming cacheline is not part of an existing sector of any of the plurality of SFT entries, finding one or more candidate SFT entries, wherein the candidate SFT entries can be converted to an aggregated entry;
selecting one of the candidate SFT entries; and
allocating the incoming cacheline to the selected SFT entry,
wherein finding one or more candidate SFT entries further comprises finding one or more candidate SFT entries wherein a sector size is less than a predetermined maximum sector size.