- Mapping the page tables into memory via the page tables (devblogs.microsoft.com)
On the 80386 processor, there is a trick for mapping the page tables into memory: You set a slot in the top-level page directory to point to… the page directory itself. When you follow through this page directory entry, you end up back at the page directory, and the effect is that the process of mapping a linear address to a physical page ends one stop early. You end up pointing not at the destination page, but at the page table that points at the destination page. From the point of view of the address space, it looks like all of the page tables have been mapped into memory. This makes it easier to edit page directory entries because you can do it within the address space.
- Gulf of Mexico (Wikipedia)
The Gulf of Mexico (Spanish: Golfo de México) is an ocean basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States; on the southwest and south by the Mexican states of Tamaulipas, Veracruz, Tabasco, Campeche, Yucatán, and Quintana Roo; and on the southeast by Cuba. The Southern U.S. states of Texas, Louisiana, Mississippi, Alabama, and Florida, which border the Gulf on the north, are often referred to as the “Third Coast” of the United States (in addition to its Atlantic and Pacific coasts).
