Invention Grant
US08135934B2 Dynamically allocating limited system memory for DMA among multiple adapters
失效
在多个适配器之间动态分配DMA的有限系统内存
- Patent Title: Dynamically allocating limited system memory for DMA among multiple adapters
- Patent Title (中): 在多个适配器之间动态分配DMA的有限系统内存
-
Application No.: US12473573Application Date: 2009-05-28
-
Publication No.: US08135934B2Publication Date: 2012-03-13
- Inventor: Colin R. DeVilbiss , Wayne G. Holm , David B. Murray , Kristopher C. Whitney
- Applicant: Colin R. DeVilbiss , Wayne G. Holm , David B. Murray , Kristopher C. Whitney
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Joan Pennington
- Main IPC: G06F12/02
- IPC: G06F12/02
Abstract:
A method, apparatus, and computer program product dynamically allocate limited system memory for direct memory access (DMA) among a plurality of input/output (I/O) adapters in a system partition. Initially a minimum entitlement of I/O entitled memory capacity is allocated to each of the respective multiple I/O adapters. The minimum entitlement enables operation of an I/O adapter driver. Additional entitlement of I/O entitled memory capacity is selectively allocated based upon I/O demands of each I/O adapter.
Public/Granted literature
- US20100306494A1 DYNAMICALLY ALLOCATING LIMITED SYSTEM MEMORY FOR DMA AMONG MULTIPLE ADAPTERS Public/Granted day:2010-12-02
Information query
