Messages in this thread | | | Date | Sun, 2 Dec 2012 14:26:49 +0100 | From | Joerg Roedel <> | Subject | Re: Supermicro X9SRL-F - channel enumeration error & ACPI/firmware bug question |
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On Thu, Nov 29, 2012 at 08:38:53PM -0700, Bjorn Helgaas wrote: > That's essentially the patch at > https://bugzilla.redhat.com/show_bug.cgi?id=757166#c16, which in my > opinion is too ugly to consider. But fortunately, I'm not the > maintainer for any IOMMU drivers.
There is a quirk infrastructure for those kinds of broken devices in drivers/pci/quirks.c. Have a look into the function pci_get_dma_source(). This function is used by the IOMMU drivers to create the correct mappings.
Joerg
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