lkml.org 
[lkml]   [2014]   [Feb]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCHv3 1/2] mm: introduce vm_ops->map_pages()
On Thu, Feb 27, 2014 at 02:34:55PM -0800, Dave Hansen wrote:
> Kirill's git test suite runs did show that it _can_ hurt in some cases.

And see last use-case for how much it can hurt. :)

It shouldn't differs much for the same *number* of pages between [u]archs
unless setup of the pte is significantly more expensive or page fault is
faster.

But of course, I can move FAULT_AROUND_PAGES to arch/x86/ and let
architecture mantainers to decide if they want the feature. ;)

--
Kirill A. Shutemov


\
 
 \ /
  Last update: 2014-02-28 02:01    [W:0.183 / U:0.880 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site