Re: large page patch (fwd) (fwd)

David S. Miller
2002-08-05T05:52:17Z

From: Linus Torvalds <torvalds@transmeta.com>
Date: Sun, 4 Aug 2002 12:28:54 -0700 (PDT)

I suspect that there is some non-zero order-X (probably 2 or 3), where you
just win more than you lose. Even for small programs.

Furthermore it would obviously help to enhance the clear_user_page()
interface to handle multiple pages because that would nullify the
startup/finish overhead of the copy loop. (read as: things like TLB
loads and FPU save/restore on some platforms)