Re: [Xen-devel] problems I encountered using xen-4.1-testing and xen-unstable

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Thu, Jan 05, 2012 at 08:05:26AM +0000, Ian Campbell wrote:
> On Wed, 2012-01-04 at 23:35 +0000, Konrad Rzeszutek Wilk wrote:
> > On Wed, Jan 04, 2012 at 10:07:29PM +0000, Kay, Allen M wrote:
> > > I'm encountering following problems while using the latest 
> > > xen-4.1-testing and xen-unstable with the latest Linux 3.2 kernel:
> > > 
> > > 
> > > 1)      Xen-4.1-testing: dom0 only sees ~2.6GB on a 4GB system, using 
> > > "cat /proc/meminfo".  This is without dom_mem boot parameter and with 
> > > 64-bit Xen and dom0 Linux.  Native Linux reports correct memory size.
> > 
> > Huh. You are right. Hadn't noticed that before since I was using dom0_mem.
> > 
> > Ian, David: any ideas?
> 
> Nope. It would be nice to see some logs (xen+dom0 and native) though.

I tried this last night and it seems that this problem has existed in 3.0 and 
in 3.1 as well.
So not a regression but rather something we had never fixed. Interstingly 
enough you can experience
the same problem with 8GB - you end up having 6GB in dom0. Naturally you can 
balloon up (hadn't tried
to do it under 4GB with 2.68GB but it looks like you can certainly do it).

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