As described in 2/2 many Intel root ports lack PCIe ACS capabilities
which results in excessively large IOMMU groups. Many of these root
ports do provide isolation capabilities, we just need to use device
specific mechanisms to enable and verify. Long term, I hope we can
round out this list (particularly to include X79 root ports) and
more importantly, encourage proper PCIe ACS support in future
products. I'm really hoping we can get this in during the 3.14 cycle.
Thanks,
Alex
---
Alex Williamson (2):
pci: Add device specific PCI ACS enable
pci/quirks: Enable quirks for PCIe ACS on Intel PCH root ports
drivers/pci/pci.c | 26 +++++-
drivers/pci/quirks.c | 201 ++++++++++++++++++++++++++++++++++++++++++++++++++
include/linux/pci.h | 2
3 files changed, 223 insertions(+), 6 deletions(-)
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