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Re: [Xen-devel] Xen memory allocation

"  XenoLinux now supports CONFIG_HIGHMEM 

and HIGHMEM works great!  Thanks for adding that back to xenolinux.

" We are considering implementing a shared buffer cache, but haven't

A memory management scheme that would be useful here is a lowater/hiwater
setting for memory allocatation to each domain.
This would allow phys memory to be oversubscribed by the domains.
Then xen could slosh memory between domains based on demand.

It seems like the balloon driver system would have had the groundwork for this.
I know that bit of things has rotted, but when it worked it ought to have
demonstrated the mechansisms needed for a  lowater/hiwater policy.

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