On 11/28/2013 02:17 AM, Yinghai Lu wrote: > On Wed, Nov 27, 2013 at 12:22 PM, Joseph Salisbury > <joseph.salisbury@xxxxxxxxxxxxx> wrote: >> Hi Yinghai, >> >> A kernel bug was opened against Ubuntu [0]. After a kernel bisect, it >> was found that the following commit introduced the bug: >> >> commit b07f2ebc109b607789f648dedcff4b125f9afec6 >> Author: Yinghai Lu <yinghai@xxxxxxxxxx> >> Date: Thu Feb 23 19:23:32 2012 -0800 >> >> PCI: add a PCI resource reallocation config option >> >> >> >> The regression was introduced as of v3.4-rc1 and also exists in current >> mainline. >> >> The bug seems platform specific since we have not had allot of other >> reports. The bug is preventing ixgbe to probe Intel x520 NIC's. >> >> It would be easy enough to disable the PCI_REALLOC_ENABLE_AUTO config >> option, but I wanted to get your feedback since you are the author. It >> looks like the bug reporter may also be able to work around the problem >> with the pci=realloc=. > The bios has problem to have two functions rom bar to same place, and > root bus does > not enough mmio range and confuse realloc logic. > > Please try attached patches to top of linus's tree, or your internal tree. > > Thanks > > Yinghai Thanks so much for the patches, Yinghai. I'll report back with the testing results. Thanks, Joe -- 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
