[Bug 197708] Allocation of PCI resources failed when

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197708

            Bug ID: 197708
           Summary: Allocation of PCI resources failed when
           Product: Base System
           Version: 10.1-RELEASE
          Hardware: i386
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: ken73.chen at gmail.com

Created attachment 153039
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=153039&action=edit
dmesg, devinfo, pciconf output when with options NEW_PCIB

After an old server upgrading from 8.4 to 10.1, em0/em1 and ahc0/ahc1 can not
work with GENERAL server because 'can't allocate register resources'.

'hint.agp.0.disabled=1' and 'hw.pci.realloc_bars=1' are not helpful for my
server.

After add 'nooptions    NEW_PCIB' to new kernel, em0/em1 and ahc0/ahc1 both
come back.

I attach dmesg, devinfo and pciconf output.

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