The page attribute table (PAT) is a processor supplementary capability extension to the page table format of certain x86 and x86-64 microprocessors. Like memory type range registers (MTRRs), they allow for fine-grained control over how areas of memory are cached, and are a companion feature to the MTRRs.
Unlike MTRRs, which provide the ability to manipulate the behavior of caching for a limited number of fixed physical address ranges, Page Attribute Tables allow for such behavior to be specified on a per-page basis, greatly increasing the ability of the operating system to select the most efficient behavior for any given task.
Read more about Page Attribute Table: Processors, See Also
Famous quotes containing the words page, attribute and/or table:
“A book is like a man—clever and dull, brave and cowardly, beautiful and ugly. For every flowering thought there will be a page like a wet and mangy mongrel, and for every looping flight a tap on the wing and a reminder that wax cannot hold the feathers firm too near the sun.”
—John Steinbeck (1902–1968)
“Much attribute he hath, and much the reason
Why we ascribe it to him; yet all his virtues,
Not virtuously of his own part beheld,
Do in our eyes begin to lose their gloss,
Yea, like fair fruit in an unwholesome dish,
Are like to rot untasted.”
—William Shakespeare (1564–1616)
“They were not on the table with their elbows.
They were not sleeping in the shelves of bunks.
I saw no men there and no bones of men there.”
—Robert Frost (1874–1963)