[Lguest] KSM in lguest?
Rusty Russell
rusty at rustcorp.com.au
Mon Oct 21 15:02:24 EST 2013
Rusty Russell <rusty at rustcorp.com.au> writes:
> Earlence Fernandes <earlenceferns at gmail.com> writes:
>> What needs to be changed in lguest to enable samepage merging?
>> Does KSM make sense for lguest? (I would think so)
>>
>> If such a patch is needed, I'll be happy to conribute it.
>
> It's possible, but it's probably the trickiest TODO in lguest.
>
> We currently have a very naive system which pins pages when in use by
> the guest, and we discard that under memory pressure. I believe that
> this will cause KSM not to function.
>
> The correct method is to use register_mmu_notifier. See virt/kvm/ for
> how it is used.
>
> Cheers,
> Rusty.
Re-try with more modern Andrea email addr :)
Cheers,
Rusty.
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