lkml.org 
[lkml]   [2018]   [Mar]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH 00/11] Use global pages with PTI
On Fri, Mar 23, 2018 at 5:46 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> It is, of course, possible that I misunderstood what you actually
> benchmarked. But I assume the above benchmark numbers are with the
> whole "don't even do global entries if you have PCID".

Oh, I went back and read your description, and realized that I _had_
misunderstood what you did.

I thought you didn't bother with global pages at all when you had PCID.

But that's not what you meant. You always do global for the actual
user-mapped kernel pages, but when you don't have PCID you do *all*
kernel test as global, whether shared or not.

So I entirely misread what the latest change was.

Linus

\
 
 \ /
  Last update: 2018-03-24 01:55    [W:0.165 / U:0.512 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site