On Wed, Jun 20, 2012 at 12:57 PM, Brice Goglin <brice.goglin@xxxxxxxxx> wrote: > Le 20/06/2012 21:28, Yinghai Lu a écrit : >> On Wed, Jun 20, 2012 at 11:46 AM, Bjorn Helgaas <bhelgaas@xxxxxxxxxx> wrote: > > I agree that the most common problem is that _PXM is missing. But I've > seen at least some HP Westmere-EP platforms where _PXM exists but it is > wrong. Last time we checked, there was no BIOS update, even if we > reported the bug a while ago. > Do you have boot log or acpi dump? I suspected that could be other problem. intel system before sandbridge does not have IIO. they will have ioh instead, and one ioh would connect to two cpu sockets. but _PXM for root bus in dsdt only can return one value. Aka it is acpi spec limitation. for example, Sun x4800 8 sockets server would have bus 00, 40, 80, c0. but _PXM will only return 0, 2, 3, 6. Thanks Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
