[Xen-users] Re: xm balloon problems

[Charles Duffy <cduffy@xxxxxxxxxxx>]

Ernst Bachmann wrote:
> Balloon works by having a kernel driver inside the dom allocate a chunk of 
> memory and releasing that chunk back to xen. Ballooning a domain to more 
> memory than it initially had would require the balloon driver to allocate a 
> negative ammount of memory, which simply isn't possible.
I'd think there'd be some way to expose extra memory allocated at 
runtime, even if it's not exactly an efficient one.
At a minimum, one could expose extra memory through a MTD driver and add 
it as high-priority swap -- and I'm sure better options are available as 
well.
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