Invention Grant
- Patent Title: Enhanced direct memory access
- Patent Title (中): 增强的直接内存访问
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Application No.: US12111968Application Date: 2008-04-30
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Publication No.: US08949569B2Publication Date: 2015-02-03
- Inventor: Alan Frederic Benner , Shmuel Ben-Yehuda , Zorik Machulsky , Julian Satran , Leah Shalev , Ilan Shimony , Thomas Basil Smith, III
- Applicant: Alan Frederic Benner , Shmuel Ben-Yehuda , Zorik Machulsky , Julian Satran , Leah Shalev , Ilan Shimony , Thomas Basil Smith, III
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Jason H. Sosa; Suzanne Erez
- Main IPC: G06F9/26
- IPC: G06F9/26 ; G06F9/38 ; G06F12/08

Abstract:
A method for facilitating direct memory access in a computing system in response to a request to transfer data is provided. The method comprises selecting a thread for transferring the data, wherein the thread executes on a processing core within the computing system; providing the thread with the request, wherein the request comprises information for carrying out a data transfer; and transferring the data according to the request. The method may further comprise: coordinating the request with a memory management unit, such that virtual addresses may be used to transfer data; invalidating a cache line associated with the source address or flushing a cache line associated with the destination address, if requested. Multiple threads can be selected to transfer data based on their proximity to the destination address.
Public/Granted literature
- US20090276571A1 Enhanced Direct Memory Access Public/Granted day:2009-11-05
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