On Fri, Nov 16, 2018 at 01:18:04AM -0800, Christoph Hellwig wrote: > On Thu, Nov 15, 2018 at 09:10:26PM +0200, Mika Westerberg wrote: > > FireWire is kind of different but there are connectors such as > > ExpressCard and NVMe (over U.2 connector) which carry PCIe and are > > relatively easy to access without need for a screwdriver. AFAIK some > > eGPUs are also using some other proprietary (non-TBT) connector that > > carries PCIe. > > U.2 is a data center internal form factor with hot plug capability. If > you enable an iommu for that by default you will make a lot of people > very unhappy. Well, it needs the other bit in ACPI DMAR table to be enabled by default so I don't think anyone in data center domain will notice ;-) > More importantly NVMe is now used for the current/next generation > Compact Flash and SD cards, which contain full PCIe gen 3 links. OK, thanks for the information - I did not know that. I guess those belong to the "external" category as well.
