On Tue, 2013-05-28 at 12:38 -0700, Stephen Hemminger wrote:
> On Tue, 28 May 2013 12:40:20 -0600
> Alex Williamson <alex.william...@redhat.com> wrote:
> 
> > Some PCIe-to-PCI bridges are not fully compliant with the PCIe spec
> > and do not include a PCIe capability.  pci_is_pcie() is not useful on
> > these devices, making it difficult to determine where we transition
> > from a legacy PCI bus to a PCIe link.  PCI-core doesn't want a quirked
> > bridge test for fear of confusion that a PCIe capability would be
> > expected, so implement it in IOMMU code.
> > 
> > Signed-off-by: Alex Williamson <alex.william...@redhat.com>
> 
> This won't work for me because I run without IOMMU.
> The overhead of IOMMU setup per-packet significantly impacts network 
> performance.

You were one of the reporters of this issue:

http://www.spinics.net/lists/linux-pci/msg19579.html

Does this not work for you or are you saying this is not relevant to you
because you no longer attempt to enable the IOMMU?  Thanks,

Alex

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