Re: [Qemu-devel] [PATCHv2 0/4] fw_cfg: qdev-related tidy-ups

[Paolo Bonzini]

On 12/06/2017 23:21, Mark Cave-Ayland wrote:
> As part of some ongoing sun4u work, I need to be able to wire the fw_cfg
> IO interface to a separate IO space by instantiating the qdev device instead
> of calling fw_cfg_init_io(). This patchset brings FW_CFG_IO in line with
> FW_CFG_MEM and tidies up the realize methods accordingly.

Could you use FW_CFG_MEM instead, and add a new function

void sysbus_mmio_map_subregion(SysBusDevice *dev, int n,
                               MemoryRegion *mr, hwaddr addr)

?

Thanks,

Paolo