On Mon, 2021-03-22 at 19:48 +0000, Christoph Hellwig wrote: > On Mon, Mar 22, 2021 at 12:28:37PM +0000, Lorenzo Pieralisi wrote: > > > correctly program bridge windows with physical addresses. Some customers are > > > using a legacy method that relies on the VMD subdevice domain's root port > > > windows to be written with the physical addresses. This method also allows > > > other hypervisors besides QEMU/KVM to perform guest passthrough. > > This seems like a bad idea. What are these other hypervisors? AFAIK > there are no purely userspace hypervisors, so in other words what you > propose here is only for unsupported external modules. Any of the type 1 hypervisors here: https://en.wikipedia.org/wiki/Hypervisor > > I don't think we shoud merge something like this.
