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Re: [Xen-devel] [PATCH] xen/tmem: Don't use map_domain_page for long-life-time pages.

>>> On 13.06.13 at 15:24, George Dunlap <george.dunlap@xxxxxxxxxxxxx> wrote:
> Did I understand correctly that the map_domain_page() was required on 
>  >5TiB systems, presumably because of limited virtual address space?  In 
> which case this code will fail on those systems?
> If that is the case, then we need to have a way to make sure tmem cannot 
> be enabled on such systems.

Tmem is full of assumptions that all memory is mapped, and hence
one of the requirements here was to disable tmem when that
assumption is not true (until eventually tmem would get fixed).
That's, as I understand it, also why (part of) tmem has always
been disabled on x86-32.


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