Re: [Qemu-devel] [PATCH 41/52] isa: express dependencies with kconfig

[Paolo Bonzini]

On 31/01/19 23:24, Philippe Mathieu-Daudé wrote:
> The model implementation is:
> - abstract SuperIO parent which can instantiate all configs,
> - child implementation.
> 
> Childs require their parent, and even if the parent will instantiate
> them without all properties, the parent needs to link with them.
> 
> In short, if a SuperIO child requires ISA_SUPERIO, it also requires to
> link to serial/parallel/floppy/ide.

It depends... Some SuperIO chips (children) do not have full
functionality, and will never have one or more of
serial/parallel/floppy/ide.  This is why I left the choice of
"select"ing the components in the children.  The code already has to set
up ISASuperIOClass, so there is knowledge of what to select.

Paolo