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MMIO access using the EPT mechanism

Suresh_N_Intel
Employee
‎11-25-2018 11:56 PM
1,085 Views

Hi All,

We are trying to access the registers of a device which is memory mapped in the host (MMIO) from the guest.

The Atom core we are using doesn't support the VT-d mechanism.

The register access is working fine using the emulation in QEMU or in the kernel using KVM.

But, the idea is to use the EPT to directly access the registers without the VM-exits.

Is it possible to achieve this MMIO access from guest using the EPT ?

Or I am I missing something ?

Regards

Suresh N

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