On Wed, Jan 09, 2013 at 06:10:22PM +0000, Julien Grall wrote:
> The commit 258711 introduced MemoryRegion to replace ioport_region*
> for ioport 80h and F0h.
> A MemoryRegion needs to have both read and write callback otherwise a segfault
> will occur when an access is made.
> 
> The previous behaviour of this both ioport is to return 0xffffffffffffffff.
> So keep this behaviour.
> 
> Reported-by: Adam Lackorzynski <[email protected]>
> Signed-off-by: Julien Grall <[email protected]>
> ---
>  hw/pc.c |   12 ++++++++++++
>  1 file changed, 12 insertions(+)

Thanks, applied to the trivial patches tree:
https://github.com/stefanha/qemu/commits/trivial-patches

Stefan

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