Messages in this thread | | | Date | Thu, 8 Apr 2010 16:24:37 -0700 | From | Chris Wright <> | Subject | Re: [PATCH 4/6] pci/dmar/sriov: use physfn to search drhd for VF |
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* Yinghai (yinghai.lu@oracle.com) wrote: > --- linux-2.6.orig/drivers/pci/dmar.c > +++ linux-2.6/drivers/pci/dmar.c > @@ -534,6 +534,8 @@ dmar_find_matched_drhd_unit(struct pci_d > struct dmar_drhd_unit *dmaru = NULL; > struct acpi_dmar_hardware_unit *drhd; > > + dev = pci_physfn(dev); > +
Yeah, we typically don't have enough VF's to wrap bus numbers, or we're under a catchall IOMMU. In the catchall case both vf->bus and vf->pf->bus will have the same domain (segment) regardless of whether we have large VF count or big offset/stride. So, I suppose this could be done inside of dmar_pci_device_match().
Otherwise, I think you'd want to add the same thing to dmar_find_matched_atsr_unit() since it's the same device scopes there.
thanks, -chris
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