On 30/04/2010 12:43, "Dave McCracken" <dcm@xxxxxxxx> wrote:
>> Secondly, I don't really believe that the mark/unmark
>> hypercalls are race-free -- bearing in mind, that other mappings (superpage
>> or otherwise) can be constructed or deleted in parallel on other cpus.
>
> I'll look into what can be done to prevent races. I suspect some races we
> don't care about.
I mean I think there are probably races that can result in inconsistent
reference counts. I reckon I'll be able to find some when I'm back from
travelling next week. Obviously, any such race would be unacceptable.
 -- Keir
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