[ARMedslack] qemu memory limitation

Jim Hawkins jawkins at armedslack.org
Tue Dec 13 11:52:59 UTC 2011


On Tue, 13 Dec 2011, John O'Donnell wrote:

> On 12/13/2011 04:56 AM, Ottavio wrote:
> > I see these two options in the qemu manual:
> > 
> > -mem-path path
> >      Allocate guest RAM from a temporarily created file in path.
> > -mem-prealloc
> >      Preallocate memory when using -mem-path.
> > 
> > I have never tried.
> 
> hmmm nice find!  I suspect these only affect main ram usage within the guest
> as such the 256M qemu limitation would still apply, but I'll give it a try!

AIUI, the RAM limit in qemu is platform dependant. The versatilepb 
platform is limited to 256MB, but according to the following 
page, the vexpress-a9 platform supports up to 1GB RAM:

https://wiki.linaro.org/PeterMaydell/QemuVersatileExpress

Although it will probably will take a bit more effort to get working than 
just changing the machine type on the qemu command line.

Cheers,

Jim


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