[FE training-materials-updates] PAE: the huge page size is in MB, not GB

Michael Opdenacker michael.opdenacker at free-electrons.com
Wed Oct 10 06:43:35 CEST 2012


Repository : git://git.free-electrons.com/training-materials.git

On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=fbdbdc0acdc3371663f13fa128dc901d20d6cf06

>---------------------------------------------------------------

commit fbdbdc0acdc3371663f13fa128dc901d20d6cf06
Author: Michael Opdenacker <michael.opdenacker at free-electrons.com>
Date:   Tue Oct 9 14:48:45 2012 +0200

    PAE: the huge page size is in MB, not GB


>---------------------------------------------------------------

fbdbdc0acdc3371663f13fa128dc901d20d6cf06
 .../kernel-driver-development-memory.tex           |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/slides/kernel-driver-development-memory/kernel-driver-development-memory.tex b/slides/kernel-driver-development-memory/kernel-driver-development-memory.tex
index d7d0147..5639fb2 100644
--- a/slides/kernel-driver-development-memory/kernel-driver-development-memory.tex
+++ b/slides/kernel-driver-development-memory/kernel-driver-development-memory.tex
@@ -75,10 +75,11 @@
   \begin{itemize}
   \item If your 32 bit platform hosts more than 4GB, they just cannot
     be mapped
-  \item The PAE (Physical Address Expansion) may be supported by your
+  \item PAE (Physical Address Expansion) may be supported by your
     architecture
   \item Adds some address extension bits used to index memory areas
-  \item Allows accessing up to 64 GB of physical memory by 4 GB pages
+  \item Allows accessing up to 64 GB of physical memory through 
+        bigger pages (2 MB pages on x86 with PAE)
   \item Note that each user-space process is still limited to a 3 GB
     memory space
   \end{itemize}



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