* David Woodhouse ([email protected]) wrote: > On Mon, 2012-06-04 at 19:09 -0400, Don Dutile wrote: > > How does the kernel probe for chipsets, then registers with the chipsets > > to find the programmed IOMMU BAR values? > > -- I missed that class.... I only have Intel Virt Tech Directed I/O > > Architecture spec., and the beginning of IOMMU is based on DMAR tables... > > If you have more info/guidance, I'd appreciate it. > > Hm, I thought we'd already started doing some of that in order to > sanity-check the DMAR tables. The VTBAR registers are in PCI config > space. The quirk_ioat_snb_local_iommu() check is already looking at > them...
I always had the impression that things like VTBAR registers are entirely chipset specific (and may not be there for all chipsets). Would be great if that's incorrect. Any idea? thanks, -chris _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
