Re: [Qemu-devel] [PATCH 1/2] ioport: add function to check whenever a port is assigned or not

[Gerd Hoffmann]

On 05/24/10 14:32, Paul Brook wrote:
> > +int is_ioport_assigned(pio_addr_t addr)
>
> Shouldn't we move this into register_ioport_{read,write}, and have that fail
> if the port has already been assigned?

It already checks and fails with hw_error().  Problem with that is that 
this kills qemu in case you try to pci hot-plug a vga card.  So I've 
added a way to check before-hand, so we can fail gracefully in the few 
places where we need it (see second patch of the series).

cheers,
  Gerd