This in reference to InteI's Software Developer’s Manual (Order Number: 325384-039US May 2011), the section 220.127.116.11 "Delayed Invalidation" describes a potential delay in invalidation of TLB entries which can cause unpredictable results while accessing memory whose paging-structure entry has been changed.
The manual says ...
"Required invalidations may be delayed under some circumstances. Software devel-
Let us suppose a simple case, where a page-strucure entry is modified (r/w flag is flipped from 0 to 1) for a linear address and after that the corresponding TBL invalidation instruction is called immediately. My question is--as a consiquence of delayed invalidation of TLB s it possible that even after calling invalidation of TLB a write access to the linear address in question doesn't fault (page fault)?
Or is the "delayed invalidation" can only cause unpredictable results when "invalidate" instruction for the linear address whose page-structure has changed has not been issued?