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

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 30.09.15 at 13:31, <ian.campbell@xxxxxxxxxx> wrote:
> 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?

No. So if you wanted to adjust the wording, you'd want to exclude
that as well as vmap().

Jan


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