VIRTUALIZATION APPARATUS

• US 20110167422A1
• Filed: 02/18/2010
• Published: 07/07/2011
• Est. Priority Date: 01/05/2010
• Status: Abandoned Application

• Current Assignee: Sungkyunkwan University Foundation For Corporate Collaboration (SungKyunKwan University)
• Original Assignee: Sungkyunkwan University Foundation For Corporate Collaboration (SungKyunKwan University)
• Inventors: Kim, Tae Hyoung, Eom, Young Ik, Kim, In Hyeok, Kim, Jung Han, Lim, Byoung Hong
• Application Number:
  US12/707,808
• Publication Number:
  US 20110167422A1
• Time in Patent Office: Days
• US Class Current: 718/1
• CPC Class Codes: G06F 2009/45583 Memory management, e.g. access or allocation
• CPC Class Codes: G06F 9/45558 Hypervisor-specific management and integration aspects

Abstract

A virtualization apparatus includes one or more guest machines each comprised of a guest kernel and a guest user process, a hypervisor module installed in a host kernel and handling a request of the guest machine with regard to the virtualization apparatus, and a virtual processor supporting the guest machine to serve as a host user process and handling an interrupt and a switching of the guest machine, wherein address spaces of the guest kernel and the guest user process are designed to be separated from each other.

Claims

1. A virtualization apparatus comprising:

one or more guest machines each comprised of a guest kernel and a guest user process;

a hypervisor module installed in a host kernel and handling a request of the guest machine with regard to the virtualization apparatus; and

a virtual processor supporting the guest machine to serve as a host user process and handling an interrupt and a switching of the guest machine,

wherein address spaces of the guest kernel and the guest user process are designed to be separated from each other.

2. The virtualization apparatus of claim 1, wherein the host kernel is positioned at an upper address of each of the guest kernel and the guest user process.

3. The virtualization apparatus of claim 1, wherein the virtual processor delivers an interrupt occurring at the guest user process to the guest kernel through the host kernel so as to handle the interrupt.

4. The virtualization apparatus of claim 1, wherein the guest kernel includes a virtual driver which carries out abstraction of a file descriptor of the host user process and supports the guest user process to recognize the file descriptor as an actual apparatus.

5. The virtualization apparatus of claim 1, wherein when a page fault corresponding to an address of the guest machine occurs, the hypervisor module delivers the page fault to the guest kernel, receives a hyper call requesting a new page in response to the delivery of the page fault, and allocates an actual physical page.

6. The virtualization apparatus of claim 5, wherein the hypervisor module creates a shadow page table to be matched with a page table of the guest kernel and synchronizes the shadow page table with the allocated page of an actual physical memory after allocating the actual physical page.