Re: [Qemu-devel] PATCH/RFC: PCI memory mapping

[Paul Brook]

> So, for example, a cirrus vga device on bus 1 when calling:
>
> cpu_register_physical_memory(addr, s->vram_size,
> s->cirrus_linear_io_addr);

Ah, that's a different (but somewhat related) problem. This is for accesses 
from the CPU to the device. Most current IOMMU effect device->CPU 
accesses[1].

Paul

[1] For practical purposes assume the the CPU and system ram are on the same 
bus.