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Re: [Xen-devel] GPU passthrough issue when VM is configured with 4G memory

On Thu, Apr 25, 2013 at 02:24:11PM +0000, Hanweidong wrote:
> > 
> > So just to check to make sure I understand correctly: the problem is
> > that qemu has mapped the guests' pages before the memory hole is made
> > larger?
> > 
> Yes. 
> > In that case, wouldn't it make sense to flush qemu's mapcache whenever
> > the memory layout changes?  Such a thing should be possible now, e.g.,
> > when doing ballooning, right?
> > 
> Good point. Will have a try.

Any luck with debugging this issue? 

I'm setting up a new box for testing GPU passthrough so I'm happy to test 
any patches you might have..


-- Pasi

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