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[Xen-devel] HYBRID: memory mapped IO

Hi Guys,

ich_force_enable_hpet() in linux wants to do mmio. It calls ioremap_pte_range
to map phys addr to a VA. Xen then updates the PV dom0's L1 with
requested io attributes. I'm trying to figure how to do this for PV in
HVM container. I was hoping to update the EPT directly.

I was thinking of just doing guest_physmap_add_entry() but the mfn is not
going to be valid. Is there any other code path that will let me do this?

Another possiblity would be handle_mmio(). 


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