On: Common Systems Programming Optimizations and Tricks

[simcop2387]

The linux kernel has patches for it submitted now, ready for when the hardware arrives https://www.phoronix.com/scan.php?page=news_item&px=Linux-De...

[vardump → simcop2387]

My point was that very few need more than 48 bits of virtual address space. Having extra layer of lookup will reduce page walk performance.

52-bit physical & 57-bit virtual address space is a no brainer if you have more than 128 TB of RAM installed, of course. :-)