Re: [Qemu-ppc] [PATCH 4/5] configs: Add a CONFIG_UNIMP switch for the "unimplemented-device"

[Paolo Bonzini]

On 19/10/2018 18:25, Philippe Mathieu-Daudé wrote:
> 
> First because I'm using it heavily on MIPS and PPC boards, when no
> datashits are available.
> I'll submit that during the next merge window, although the MIPS tree
> seems now reluctant to that kind of hobbyist work.
> 
> Second, because it is very clean when you implement a SoC to first
> start with an empty UNIMP region and a cpu core,
> then declare the mmio regions for each device (still UNIMP), then you
> can slowly add devices one at a time.
> This let you (me, so far) push at most a dozen of tiny patches in a
> working series, instead of a small series of a dozen of huge patches,
> or a series of 100 tiny patches.

I don't see however why it's a problem to add/remove CONFIG_UNIMP to
default-configs though (in the Kconfig world the board would "select
UNIMP").

Paolo