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xen-devel
Re: [Xen-devel] Re: pvclock in userland (reprise)
On 09/21/09 01:20, Jan Beulich wrote:
>> Does Xen still claim the top part of the 32-bit address space?
>>
> Sure - currently just for the compat M2P table. I can't see why other
> things could be mapped there (the compat M2P table is at most 128M
> in size, hence there's plenty of virtual space available).
>
Yep, we could alias the pvclock info there, though I'm coming to like
the idea of doing it via syscall/hypercall rather than having the guest
explicitly get access to shared memory.
J
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