[SeaBIOS] [PATCH] pci: improve io address space allocation
Kevin O'Connor
kevin at koconnor.net
Fri Jan 24 05:48:27 CET 2014
On Thu, Jan 23, 2014 at 04:03:55PM +0100, Gerd Hoffmann wrote:
> This patch improves the io address space allocation. It adds a check
> that the region above 0xc000 which is traditionally used for pci io
> is actually big enougth. If it isn't it tries the larger window at
> 0x1000. If that is to small too it errors out.
>
> When creating guests with multiple pci-pci bridges (and devices with
> io regions behind them) the 0xc000 -> 0xffff region quickly becomes
> too small.
>
> While being at it document the io address space layout used by
> qemu/seabios.
Looks okay to me.
-Kevin
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