hi, I am wondering if it is possible to map guest MMIO to host MMIO, the purpose is to reduce VM_EXIT as the page tables will be setup before MMIO accessing from guest. Here is what I have in mind:
qemu_map_guest_mmio(guest_phys_addr, host_phys_addr, flags) --> kvm_ioctl_map_guest_mmio_region(...) Inside function kvm_ioctl_map_guest_mmio_region, it needs to setup mappings for EPT to map guest_phys_addr(MMIO) to host_phys_addr(MMIO). The first host_phys_addr inside QEMU function will be provided by the para-virtualized guest. Thanks, CJ -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
