lkml.org 
[lkml]   [2014]   [Dec]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2] X86-32: Allocate 256 bytes for pgd in PAE paging
On 12/17/2014 01:47 PM, Fenghua Yu wrote:
> From: Fenghua Yu <fenghua.yu@intel.com>
>
> X86 32-bit machine and kernel use PAE paging, which currently wastes about
> 4K of memory per process on Linux where we have to reserve an entire page to
> support a single 256-byte PGD structure. It would be a very good thing if
> we could eliminate that wastage.
>

4*8 = 32 bytes, where did 256 bytes come from?

-hpa




\
 
 \ /
  Last update: 2014-12-18 19:01    [W:0.045 / U:0.792 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site