On Tue, Feb 04, 2025 at 01:55:01PM +0100, Eric Auger wrote: > OK so you need to set host sw_msi_start to the guest doorbell GPA which > is currently set, in qemu, at > GITS_TRANSLATER 0x08080000 + 0x10000 Yes (but don't do this except for testing) The challenge that remains is how to build an API to get each ITS page mapped into the S2 at the right position - ideally statically before the VM is booted. Jason