On Sun, May 03, 2020 at 05:25:28PM -0700, Dey, Megha wrote:

quoted

quoted

The use case if when we have a device assigned to a guest and we
want to allocate IMS(platform-msi) interrupts for that
guest-assigned device. Currently, this is abstracted through a mdev
interface.

And the mdev has the pci_device internally, so it should simply pass
that pci_device to the platform_msi machinery.

hmm i am not sure I follow this. mdev has a pci_device internally? which
struct are you referring to here?

mdev in general may not, but any ADI trying to use mdev will
necessarily have access to a struct pci_device.

mdev is merely a micropartitioned PCI device right, which no real PCI
resource backing. I am not how else we can find the IRQ domain associated
with an mdev..

ADI always has real PCI resource backing.

Jason