Re: [PATCH] kvm tools: Add MMIO coalescing support

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* Sasha Levin <levinsasha928@xxxxxxxxx> wrote:

> Coalescing MMIO allows us to avoid an exit every time we have a
> MMIO write, instead - MMIO writes are coalesced in a ring which
> can be flushed once an exit for a different reason is needed.
> A MMIO exit is also trigged once the ring is full.
> 
> Coalesce all MMIO regions registered in the MMIO mapper.
> Add a coalescing handler under kvm_cpu.

Does this have any effect on latency? I.e. does the guest side 
guarantee that the pending queue will be flushed after a group of 
updates have been done?

Thanks,

	Ingo
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