Method and system for extended memory with user mode...

Details Method and system for extended memory with user mode... Method and system for extended memory with user mode...

2004-05-17

2009-02-17

Shah, Sanjiv (Department: 2185)

Electrical computers and digital processing systems: memory

Address formation

Address mapping

C711S006000, C711S202000, C711S205000, C711S206000, C711S207000, C711S221000

Reexamination Certificate

active

07493465

ABSTRACT:
A computer system having a kernel for mapping virtual memory address space to physical memory address space. The computer system uses a method for performing an input/output operation. A physical memory buffer is registered with a subsystem, and the physical memory buffer is associated with a first virtual address, a size and a key. The physical memory buffer is dynamically associated with a second virtual address which is different from the first virtual address. As part of an application program an input/output operation is requested regarding the second virtual address. An application table is used to obtain the first virtual address, the key and the size. The first virtual address, the key and the size are supplied to the subsystem. The subsystem uses the first virtual address, the key and the size, to determine the physical memory buffer and performs an input/output operation using the physical memory buffer without intervention of the kernel.

REFERENCES:
patent: 5893166 (1999-04-01), Frank et al.
patent: 5956754 (1999-09-01), Kimmel
patent: 6125430 (2000-09-01), Noel et al.
patent: 6163834 (2000-12-01), Garcia et al.
patent: 6308247 (2001-10-01), Ackerman et al.
patent: 6947970 (2005-09-01), Berry
patent: 7055152 (2006-05-01), Ganapathy
patent: 2004/0215918 (2004-10-01), Jacobs et al.

Affiliated with

Also associated with

Rating

Method and system for extended memory with user mode... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and system for extended memory with user mode..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and system for extended memory with user mode... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4062773