Re: [virtio-dev] Dirty Page Tracking (DPT)

[Jason Wang <jasowang@redhat.com>]

----- Original Message -----
> another question on vDPA vs vendor specific driver portion...
> 
> Are the subsystem vendor & device IDs to be different from the primary (Red
> Hat) versions as there has to be a way for a vendor specific driver to
> "see" its device.

Yes, any kinds of (PCI)device could be registered to the vDPA bus. For PCI
driver, it supports exact mathing based on subsystem ID.

E.g in IFCVF driver it does:

static struct pci_device_id ifcvf_pci_ids[] = {
	{ PCI_DEVICE_SUB(IFCVF_VENDOR_ID,
		IFCVF_DEVICE_ID,
		IFCVF_SUBSYS_VENDOR_ID,
		IFCVF_SUBSYS_DEVICE_ID) },
	{ 0 },
};

Which uses Redhat primary vendor ID but their own sybsysm
vendor/device ID.

Thanks