lkml.org 
[lkml]   [2008]   [Oct]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: bad DMAR interaction with iwlagn and SATA
From
Date
On Tue, 2008-10-07 at 13:04 -0400, Kyle McMartin wrote:

> 2MB pages (and 4MB pages) are dependent on PSE/PAE, there's no configurable
> page size on x86 like there is on other platforms.
>
> PSE gives you 4MB pages, PAE reduces your 4MB pages to 2MB pages (for
> extra flag and address bits.)
>
> About the only useful places for these are large mappings like ioremap
> and whatnot.

Thanks for the explanation. Can you explain too why iwlwifi crashes when
I enable 64k pages? ;)

johannes
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2008-10-07 19:11    [W:0.062 / U:0.408 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site