More RAM than MemTotal

More RAM than MemTotal

Orna Agmon Ben-Yehuda ladypine at gmail.com
Wed Mar 28 14:54:52 IST 2012


Baruch, thank you, but on my machine I do not have this line in dmesg.
Indeed I use a x86_64 machine (also in the virtualized machine), and the
PCI hole to which Nadav points says the problem exists only in 32 bit
architectures.

On Wed, Mar 28, 2012 at 2:48 PM, Nadav Har'El <nyh at math.technion.ac.il>wrote:

> On Wed, Mar 28, 2012, Baruch Siach wrote about "Re: More RAM than
> MemTotal":
> > The (huge) "absent" figure comes from absent_pages_in_range() in
> > mm/page_alloc.c which, according to the comment there "returns number of
> page
> > frames in holes" within the entire RAM. I'm not sure what that means
> exactly.
>
> Check out http://en.wikipedia.org/wiki/PCI_hole
>
> --
> Nadav Har'El                        |                 Wednesday, Mar 28
> 2012,
> nyh at math.technion.ac.il
> |-----------------------------------------
> Phone +972-523-790466, ICQ 13349191 |Communism is the equal distribution
> of
> http://nadav.harel.org.il           |poverty.
>



-- 
Orna Agmon Ben-Yehuda.
http://ladypine.org
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