Re: [Xen-devel] [RFC PATCH 68/84] page_alloc: actually do the mapping and unmapping on xenheap.

[Jan Beulich <jbeulich@xxxxxxxx>]

On 26.09.2019 15:03, hongyax@xxxxxxxxxx wrote:
> The series is intended for x86 which then starts with no xenheap mappings. If 
> one call to map_pages_to_xen() maps the first half of a superpage and a 
> second 
> one maps the remaining, will the second call merge them into an actual 
> superpage mapping?

It will try to, yes.

> Also, do we do a xenheap allocation and then only free part 
> of it in some cases?

We do, yes.

What I'm severely confused by is how you word your questions.
You surely had a need to understand both of these details
before even posting the series, so other than this ...

> If both answers are hopefully no, then shattering won't happen.

... implies you should have known that the answers are "yes"
in both cases.

Jan

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