> Since the 2010 Westmere microarchitecture Intel 64 processors also support 12-bit "process-context identifiers" (PCIDs), which allow retaining TLB entries for multiple linear-address spaces, with only those that match the current PCID being used for address translation.[19][20]
> Since the 2010 Westmere microarchitecture Intel 64 processors also support 12-bit "process-context identifiers" (PCIDs), which allow retaining TLB entries for multiple linear-address spaces, with only those that match the current PCID being used for address translation.[19][20]
https://en.wikipedia.org/wiki/Translation_lookaside_buffer#P...
HN discussion: https://news.ycombinator.com/item?id=16094349