On Fri, 25 Jun 2021 at 10:25, Kevin Mambu <kevin.ma...@pm.me> wrote: > In the scope of my Ph. D subject, I want to model a DMA-like mechanism for > quick prototyping and evaluation, the plugin emulates an MMIO with > Control/Status Registers. I am actually able to pass parameters to the > Control/Status Registers through store instruction without any issue. Only > the data transfer between two guest memory regions fails at times.
This really isn't what the plugin API is intended for -- it's meant for tracing and similar sorts of "track what the guest is doing" activities. If you want to model an MMIO device, you're better off just writing a device model like any of the others in QEMU, I think: the APIs for doing that are much more well-proven and there's plenty of examples in the tree of DMA and other devices. -- PMM
