On Tue, Dec 9, 2014 at 1:53 PM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote:
> On Tue, Dec 9, 2014 at 2:34 PM, Yinghai Lu <yinghai@xxxxxxxxxx> wrote:
>> + list_for_each_entry(window, &bridge->windows, list) {
>> + res = window->res;
>> + if (resource_type(res) == IORESOURCE_MEM ||
>> + res->end > 0xffffffff) {
>> + bridge->has_mem64_res = true;
>
> This is an interesting idea, but I think you're checking CPU addresses
> here, and you need to check PCI bus addresses.
Looks like those IBM platforms have res > 4g, but pci bus address < 4g.
If we check pci bus address, and then we would break those platforms.
Yinghai
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