Sharing kernel services among kernels

• US 9,201,703 B2
• Filed: 06/07/2006
• Issued: 12/01/2015
• Est. Priority Date: 06/07/2006
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Dunshea, Andrew, Flemming, Diane G.
• Primary Examiner(s): Mudrick, Timothy A
• Application Number:
  US11/422,656
• Publication Number:
  US 20070288941A1
• Time in Patent Office: 3,464 Days
• Field of Search: 719/319, 719/310, 719/313
• US Class Current: 1/1
• CPC Class Codes: G06F 9/5077 Logical partitioning of resources; Management or configuration of virtualized resources specific details on emulation or internal functioning of virtual machines G06F9/455

Abstract

Sharing kernel services among kernels, including receiving, by a partition manager from an application in a logical partition, a first system call for a kernel service from a first kernel, the first system call having form and content compatible with the first kernel, generating, in dependence upon the first system call, a second system call for the kernel service from a second kernel, the second system call having form and content compatible with the second kernel, and sending the second system call through the partition manager to the second kernel for execution.

Claims

1. A method of sharing kernel services among kernels, the method implemented upon automated computing machinery comprising at least a computer processor and a computer memory operatively coupled to the computer processor, the method comprising:

receiving, by a partition manager from an application in a logical partition, a first system call for a kernel service from a first kernel, the first system call having form and content compatible with the first kernel;

generating, in dependence upon the first system call, a second system call for the kernel service from a second kernel, the second system call having form and content compatible with the second kernel; and

sending the second system call through the partition manager to the second kernel for execution;

providing, by the second kernel, the kernel service; and

sending a response to the application in the logical partition, the response having form and content compatible with the first kernel.

2. The method of claim 1 further comprising:

receiving, by the first kernel, the first system call; and

determining, by the first kernel, that the kernel service is to be provided by the second kernel;

wherein generating, in dependence upon the first system call, the second system call for the kernel service from the second kernel, comprises generating, by the first kernel in dependence upon the first system call, the second system call for the kernel service from the second kernel.

3. The method of claim 1 wherein generating, in dependence upon the first system call, the second system call for the kernel service from the second kernel comprises generating a generic system call.

4. The method of claim 1 wherein providing, by the second kernel, the kernel service includes providing by the second kernel a generic response to the second system call.

5. The method of claim 1 wherein providing, by the second kernel, the kernel service includes providing, by the second kernel to the first kernel, a response to the second system call, the response to the second system call having form and content compatible with the first kernel.

6. An apparatus for sharing kernel services among kernels, the apparatus comprising a computer processor and a computer memory operatively coupled to the computer processor, the computer memory having disposed within it computer program instructions capable of:

receiving, by a partition manager from an application in a logical partition, a first system call for a kernel service from a first kernel, the first system call having form and content compatible with the first kernel;

generating, in dependence upon the first system call, a second system call for the kernel service from a second kernel, the second system call having form and content compatible with the second kernel; and

sending the second system call through the partition manager to the second kernel for execution;

providing, by the second kernel, the kernel service; and

sending a response to the application in the logical partition, the response having form and content compatible with the first kernel.

7. The apparatus of claim 6 further comprising computer program instructions capable of:

receiving, by the first kernel, the first system call; and

determining, by the first kernel, that the kernel service is to be provided by the second kernel;

wherein generating, in dependence upon the first system call, the second system call for the kernel service from the second kernel, comprises generating, by the first kernel in dependence upon the first system call, the second system call for the kernel service from the second kernel.

8. The apparatus of claim 6 wherein generating, in dependence upon the first system call, the second system call for the kernel service from the second kernel comprises generating a generic system call.

9. The apparatus of claim 6 wherein providing, by the second kernel, the kernel service includes providing by the second kernel a generic response to the second system call.

10. The apparatus of claim 6 wherein providing, by the second kernel, the kernel service includes providing, by the second kernel to the first kernel, a response to the second system call, the response to the second system call having form and content compatible with the first kernel.

11. A computer program product for sharing kernel services among kernels, the computer program product disposed upon a computer-readable recording medium, the computer program product comprising computer program instructions capable of:

receiving, by a partition manager from an application in a logical partition, a first system call for a kernel service from a first kernel, the first system call having form and content compatible with the first kernel;

generating, in dependence upon the first system call, a second system call for the kernel service from a second kernel, the second system call having form and content compatible with the second kernel; and

sending the second system call through the partition manager to the second kernel for execution;

providing, by the second kernel, the kernel service; and

sending a response to the application in the logical partition, the response having form and content compatible with the first kernel.

12. The computer program product of claim 11 further comprising computer program instructions capable of:

receiving, by the first kernel, the first system call; and

determining, by the first kernel, that the kernel service is to be provided by the second kernel;

wherein generating, in dependence upon the first system call, the second system call for the kernel service from the second kernel, comprises generating, by the first kernel in dependence upon the first system call, the second system call for the kernel service from the second kernel.

13. The computer program product of claim 11 wherein generating, in dependence upon the first system call, the second system call for the kernel service from the second kernel comprises generating a generic system call.

14. The computer program product of claim 11 wherein providing, by the second kernel, the kernel service includes providing by the second kernel a generic response to the second system call.

15. The computer program product of claim 11 wherein providing, by the second kernel, the kernel service includes providing, by the second kernel to the first kernel, a response to the second system call, the response to the second system call having form and content compatible with the first kernel.