Re: [PATCH 2/3] x86_64: Define 128-bit memory-mapped I/O operations
From: Linus Torvalds <torvalds@linux-foundation.org>
Date: 2012-08-22 14:51:14
On Wed, Aug 22, 2012 at 7:24 AM, Ben Hutchings [off-list ref] wrote:
Sorry, I'll paste it below.
The thing you pasted isn't actually the thing in the subject line.
It's just you *using* it.
I wanted to see what that "writeo()" looks like for x86-64.
But I got google to find it for me by looking for "__raw_writeo", so I
can see the patch now. It looks like it might work. Does it really
help performance despite always doing those TS games in CR0 for each
access?
Linus