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Re: [Xen-devel] [PATCH v1 0/2] Extend ioreq-server to support page write protection

>>> On 04.08.14 at 23:34, <kevin.tian@xxxxxxxxx> wrote:
> 2nd option, like Wei mentioned in another mail, is to treat such write
> protected PPGTT page tables as MMIO. new hypercall is required to 
> change the p2m type between p2m_io and p2m_ram, based on 
> allocation/free of guest page table. This way may impact performance
> on read though.

Depends on whether you mean mmio_dm or mmio_direct here.


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