Re: [Xen-devel] [PATCH] libxl: invert xc and domain model resume calls in xc_domain_resume()

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Mon, Nov 28, 2016 at 02:53:57PM +0100, Cédric Bosdonnat wrote:
> Resume is sometimes silently failing for HVM guests. Getting the
> xc_domain_resume() and libxl__domain_resume_device_model() in the
> reverse order than what is in the suspend code fixes the problem.
> 
> Signed-off-by: Cédric Bosdonnat <cbosdonnat@xxxxxxxx>
 
I think it would be nice to explain why reversing the order fixes the
problem for you. My guess is because device model needs to be ready when
the guest runs, but I'm not fully convinced by this explanation --
guests should just be trapped in the hypervisor waiting for device model
to come up.

I also CC'ed other people who are more familiar with this area so that
they can provide insight.
 
Wei.

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