[SeaBIOS] [PATCH V2] fw/pci: do not automatically allocate IO region for PCIe bridges
kevin at koconnor.net
Sun Dec 20 20:43:41 CET 2015
On Mon, Dec 07, 2015 at 02:05:14PM +0200, Marcel Apfelbaum wrote:
> PCIe downstream ports (Root Ports and switches Downstream Ports) appear
> to firmware as PCI-PCI bridges and a 4K IO space is allocated for them
> even if there is no device behind them requesting IO space,
> all that for hotplug purpose.
> However, PCIe devices can work without IO, so there is no need
> to allocate IO space for hotplug.
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