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(parent: c1ae3cf) | patch
PCI: Add bridge DMA alias quirk for ITE 8893 bridge
authorJarod Wilson <jarod@redhat.com>
Wed, 12 Apr 2017 17:33:04 +0000 (12:33 -0500)
committerBjorn Helgaas <bhelgaas@google.com>
Wed, 12 Apr 2017 17:33:04 +0000 (12:33 -0500)
commitfce5d57e5754fa35245f7c41e3942040393e2fb1
treee16f6eba5acc72c95bdaf9ec867a84ef461ce154tree | snapshot (tar.gz zip)
parentc1ae3cfa0e89fa1a7ecc4c99031f5e9ae99d9201commit | diff
PCI: Add bridge DMA alias quirk for ITE 8893 bridge

The ITE 8893 bridge has the same problems as the ITE 8892, which were
resulting in crippling an older PCI 1Gbps NIC down to 45Mbps throughput
with IOMMU and VT-d enabled.  With the patch, this old e1000 goes back up
to ~900Mbps.

Suggested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
drivers/pci/quirks.c diff | blob | blame | history