19 Mar
2018
19 Mar
'18
10:40 a.m.
On Mon, Mar 19, 2018 at 12:21:35PM +0000, Daniel P. Berrangé wrote:
On Fri, Mar 16, 2018 at 11:39:36AM -0600, Keith Busch wrote:
Intel VMD creates secondary PCIe domain, where child devices in this domain are aggregated behind a single end point. Linux exposes these as special 32-bit domains, and devices in them are not individually assignable.
IIUC, your patch is addressing a problem for machines with a specific Intel PCIe device type.
Is this "domain >= USHRT_MAX" scenario specific to just this Intel PCIe device type, or will such a high domain number indicate the same semantics for devices from any vendor.
Yes, there is no other vendor exporting multiple PCI domains that isn't tied to a platform sepcific 16-bit PCI _SEG.