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Re: [Xen-devel] 3.0.5-rc3: Creating HVM guest fails with: Cannot allocate memory

On Fri, Apr 27, 2007 at 02:56:48PM +0100, Keir Fraser wrote:
> On 27/4/07 14:26, "Daniel P. Berrange" <berrange@xxxxxxxxxx> wrote:
> > It seems to occurr with any HVM guest I try to create, unless there was
> > already
> > some free mem (from starting & stopping a previous dom). I'm testing with 
> > this
> > very simple hack which seems to make it work - just ensure the balloon 
> > driver
> > frees a 10 MB chunk right at the start. Hardcoding is fine because when we
> > later get to the _initDomain() method we'll definitely be freeing up much
> > more than 10 MB for the HVM guests's actual mem requirements.
> We do most testing with a sensible 'dom0_mem=' so we wouldn't see this.

Well 'sensible' depends on your target audience :-) In the desktop/laptop
arena users like their Dom0 to have all the memory which isn't used by
active guests - even to the extent we've had bugs reported asking us to
make XenD automatically balloon dom0 back up after a guest shuts down !

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