Re: [Xen-devel] [PATCH DOCDAY] xen: write a high level description of the sub-arch choices for heap layout

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Wed, 2015-09-30 at 12:10 +0100, Andrew Cooper wrote:

> > + *
> > + *             Xen heap pages are always anonymous (that is, not tied
> > + *             or accounted to any particular domain).
> > + *
> > + * - Dom heap: Memory which must be explicitly mapped, usually
> > + *             transiently with map_domain_page, in order to be
> > + *             used. va() and pa() are not valid for such memory.
> 
> While stashing pointers into domheap memory is definitely buggy.

Is this true even considering the result of e.g. map_domain_page_global?


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