Re: [libvirt] [PATCH] pci: Ignore 32-bit PCIe domains
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.