Re: [Xen-devel] Question about mapping between domains

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Tue, 2015-07-14 at 18:31 +0300, Oleksandr Dmytryshyn wrote:
> > There is an additional quirk for a 1:1 mapped dom0 which is that we
> > don't actually decrease reservation when ballooning, but keep the 1:1
> > mfn in anticipation of ballooning it back in later.
> Could You please tell me a bit more information about this quirk. How this 
> quirk
> can be enabled?

It's enabled by the same dom0_11_mapping which the dom0 domain_builder
uses, look for uses of is_domain_direct_mapped, in particular the ones
in xen/common/memory.c.

Ian.


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