On Mon, Dec 8, 2014 at 3:38 PM, Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx> wrote: > On Mon, Dec 08, 2014 at 02:46:00PM -0700, Bjorn Helgaas wrote: >>Yeah, I didn't word that very clearly. I meant that after >>5b28541552ef, that 64-bit window is wasted unless there's a 64-bit BAR >>below it; we can't even place the window below 4GB and use it for >>32-bit prefetchable BARs. >> > > Yes, I agree. It's why I suggested to return error from pbus_size_mem() > to indicate the case: 64-bits prefetchable window isn't used and it's > still available to be used by child 32-bits prefetchable BARs. Please > take a look on the attached draft patch, which helps to explain the idea > only. That would not help. The 00:01.0 on Zermond's system support hotplug. so mem pref will be used for 64bit pref. -- 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
