Memory management

1. A method for memory management, comprising:

providing an operating system capable of supporting variable page sizes;

obtaining a virtual memory address that corresponds to requested data;

translating the virtual memory address to a virtual memory page; and

mapping the virtual memory page to a physical memory page by using a multilevel page table, wherein the multilevel page table depth depends on the number of variable page sizes supported by the operating system.

2. The method of claim 1 , wherein the mapping includes locating the physical memory page by using a single data structure to reference the physical memory page, and wherein the virtual memory page is capable of having a variable size.

3. The method of claim 2 , wherein locating the physical page includes using a virtual frame descriptor disk block descriptor data structure to reference the physical memory page.

4. The method of claim 1 , wherein using the multilevel page table includes using a page table having a depth of at least three.

5. The method of claim 1 , wherein the method includes providing a virtual memory address that corresponds to data requested by a process.

6. The method of claim 1 , wherein the method includes providing a processor capable of supporting a number of page sizes, and wherein the method further includes matching a page table level size for each of a number of table level element to correspond to a page size supported by the processor.

7. A computing device, comprising:

a processor capable of supporting variable page sizes;

a memory in communication with the processor; and

executable instructions storable in memory and executable on the processor to:

provide a virtual memory address corresponding to requested data;

translate the virtual memory address to a virtual memory page, the virtual memory page capable of having a variable size; and

map the virtual memory page to a physical memory page by using a multilevel page table, wherein the multilevel page table depth depends on the number of variable page sizes supported by the operating system.

8. The device of claim 7 , including executable instructions that execute to maintain the multilevel page table in a main memory location.

9. The device of claim 7 , including executable instructions that execute to locate the physical memory page by using a single reference data structure.

10. The device of claim 7 , including executable instructions that execute to organize the multilevel page table, the multilevel page table comprising:

a first level including an array of elements of fixed size, the array elements capable of being mapped by a collection of pages, wherein the mapping includes a lower level including a sub-array of elements of fixed size.

11. The device of claim 10 , wherein the size of a first fixed size array element is equal to the sum of the sizes of a number of other fixed size elements associated with the first fixed size array element in a number of arrays at a number of lower levels.

12. The device of claim 11 , wherein the size of the first fixed size array corresponds to the size of a virtual memory space allocated to a process.

13. A computer readable medium having executable instructions thereon being executed to cause a device to perform a method, comprising:

representing a memory object wherein the multilevel page table depth depends on the number of variable page sizes supported by the operating system, by using a multilevel page table, wherein the multilevel page table describes the memory object as a single data structure of virtual memory page array and sub-array elements and wherein:

the elements have a fixed size; and

the elements represent data, including:

a virtual page; and

a collection of virtual pages;

receiving a request for a virtual memory address based on data sought by a process;

translating the virtual memory address to a virtual memory page;

locating the virtual memory page in the multilevel page table; and

locating a physical memory page by using the multilevel page table.

14. The medium of claim 13 , the method including representing a variable page size memory object by using the multilevel page table.

15. The medium of claim 14 , the method including locating the physical memory page by using one reference data structure to reference the pages of the variable page size memory object.

16. The medium of claim 15 , the method including providing direct access to array elements representing virtual pages and array elements representing collections of virtual pages based on the virtual memory address.

17. The medium of claim 15 , the method including maintaining the multilevel page table in a main memory.

18. A computing system, comprising:

a processor capable of supporting variable page sizes;

a memory in communication with the processor; and means for mapping a variable page size memory object by using a multilevel page table, wherein the multilevel page table depth depends on the number of variable page sizes supported by the operating system, by matching a single data structure of virtual memory page array and sub-array elements to correspond to a page size supported by the processor.

19. The system of claim 18 , wherein the multilevel page table includes at least three levels.

20. The system of claim 18 , wherein the processor is capable of supporting at least 4 page sizes.