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:
“I asked myself, “Is it going to prevent me from getting out of here? Is there a risk of death attached to it? Is it permanently disabling? Is it permanently disfiguring? Lastly, is it excruciating?” If it doesn’t fit one of those five categories, then it isn’t important.”
—Rhonda Cornum, United States Army Major. As quoted in Newsweek magazine, “Perspectives” page (July 13, 1992)
“Both the Moral Majority, who are recycling medieval language to explain AIDS, and those ultra-leftists who attribute AIDS to some sort of conspiracy, have a clearly political analysis of the epidemic. But even if one attributes its cause to a microorganism rather than the wrath of God, or the workings of the CIA, it is clear that the way in which AIDS has been perceived, conceptualized, imagined, researched and financed makes this the most political of diseases.”
—Dennis Altman (b. 1943)
“In New York, pretending to be above the struggle means no seat on the bus and a table next to the kitchen.”
—Mason Cooley (b. 1927)