Re: [PATCH RFC 1/3] vmx: allow ioeventfd for EPT violations

[Michael S. Tsirkin]

On Mon, Aug 31, 2015 at 09:23:13PM +0800, Xiao Guangrong wrote:
> I have another question, the eventfd memory is never read by guest and it's always
> a write MMIO VM-exit, why you build it on RO memslot? Why not just use normal MMIO page
> instead?

We do that at the moment, that's slower than PIO.

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