On Fri, 2009-06-26 at 15:16 -0600, Matthew Wilcox wrote: > On Fri, Jun 26, 2009 at 01:55:33PM -0700, Keith Mannthey wrote: > > On Fri, 2009-06-26 at 13:50 -0600, Matthew Wilcox wrote: > > > > 1. Why are these devices hidden? I understand some of the other icore7 > > > > cpus devices behave as I would expect. > > > > > > You'd have to ask your BIOS people. Linux doesn't blindly scan every > > > single PCI address; it would take far too long. Instead, we rely on > > > the BIOS to tell us about PCI busses that exist, and we scan those. > > > > Which table do the devices need to be present in for the kernel to pick > > them up? > > Linux gets hints from the BIOS in a number of different ways. You're > probably using ACPI, so we'd look for a PNP0A03 device, then try to scan > the bus that points to. Thanks, I have asked some BIOS (or I should say UFI) folks if they can shed some light onto the situation. > > Why does the alternate configuration type work? > > Probably because you're telling it to scan PCI devices that the kernel > doesn't know that it ought to scan. Is there anyway from module init context to tell the kernel to scan and look to create a proper pci device out if it? Is there a way to create a struct pci devices and add it back into the pool? I guess I need to dig through the pci code a bit more. At least one other person has seen this similar thing with the Zeons and I don't think are running on IBM hardware. I have heard other core i7 non Zeon cpus work just fine. Thanks, Keith Mannthey LTC Real-Time -- 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
