On Thu, 2010-01-07 at 12:09 +1100, Alex Brooks wrote: > > You mentioned two messages. Here's the first: > > PCI: BIOS Bug: MCFG area at e0000000 is not reserved in ACPI motherboard > > resources PCI: Not using MMCONFIG. > > > > and the second: > > PCI: Cannot allocate resource region 0 of device 0000:01:04.0 > > PCI: Error while updating region 0000:01:04.0/0 (feb00002 != 00000000) > > > > The "Error while updating region" message is because we wrote something > > to a BAR, read it back, and they didn't match. I suppose this could be > > some kind of config space problem related to the fact that we're not > > using MMCONFIG. > > > > Can you try removing the MCFG reservation check, so we do try to use > > MMCONFIG? If you do this on a current kernel, we'll also get a little > > more debug output about the subsequent resource allocation failure. > > I did this on my 2.6.26 kernel (is this current enough or would a later kernel > be better?) and attached the dmesg output. Looks like you got the same errors when accessing config space as before. I was hoping for a kernel directly from Linus' git repo, e.g., 2.6.33-rc3; I don't think the debug output I'm thinking about went in until after 2.6.32 was released. Bjorn -- 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
