On Mon, Nov 09, 2020 at 02:50:25PM +0200, Oleksandr Andrushchenko wrote: > From: Oleksandr Andrushchenko <oleksandr_andrushche...@epam.com> > > Host bridge controller's ECAM space is mapped into Domain-0's p2m, > thus it is not possible to trap the same for vPCI via MMIO handlers. > For this to work we need to unmap those mappings in p2m. > > TODO (Julien): It would be best if we avoid the map/unmap operation. > So, maybe we want to introduce another way to avoid the mapping. > Maybe by changing the type of the controller to "PCI_HOSTCONTROLLER" > and checking if this is a PCI hostcontroller avoid the mapping.
I know very little about Arm to be able to provide meaningful comments here. I agree that creating the maps just to remove them afterwards is not the right approach, we should instead avoid those mappings from being created in the first place. Roger.
