Messages in this thread | | | Date | Tue, 8 Oct 2013 19:02:28 +0200 | From | "" <> | Subject | Re: [PATCH 1/7] powerpc: Add interface to get msi region information |
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On Tue, Oct 08, 2013 at 10:47:49AM -0600, Bjorn Helgaas wrote: > I still have no idea what an "aperture type IOMMU" is, > other than that it is "different."
An aperture based IOMMU is basically any GART-like IOMMU which can only remap a small window (the aperture) of the DMA address space. DMA outside of that window is either blocked completly or passed through untranslated.
Joerg
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