On Wednesday, July 31, 2013 03:08:03 PM Bjorn Helgaas wrote: > [+cc Rafael, linux-acpi] > > On Tue, Jul 30, 2013 at 6:35 PM, Takao Indoh <indou.ta...@jp.fujitsu.com> > wrote: > > > On x86, currently IOMMU initialization run *after* PCI enumeration, but > > what you are talking about is that it should be changed so that x86 > > IOMMU initialization is done *before* PCI enumeration like sparc, right? > > Yes. I don't know whether or when that initialization order will ever > be changed, but I do think we should avoid building more > infrastructure that depends on the current order. > > Changing the order is a pretty big deal because it's a lot more than > just the IOMMU. Basically I think we should be enumerating ACPI > devices, including the IOMMU, before PCI devices, but there's a lot of > legacy involved in that area. Added Rafael in case he has any > thoughts.
Well, actually, I'm not really familiar with IOMMUs, sorry. I do think that initializing IOMMU before PCI enumeration would be better, however. At least if the ordering should be the same on all architectures, which I suppose is the case, that's the one I'd choose. Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
