On Mon, May 11, 2026 at 07:02:56PM -0700, Mukesh R wrote: > On Hyper-V, most hypercalls related to PCI passthru to map/unmap regions, > interrupts, etc need a device ID as a parameter. This device ID refers > to that specific device during the lifetime of passthru. > > An L1VH VM only contains VMBus based devices. A device ID for a VMBus > device is slightly different in that it uses the hv_pcibus_device info > for building it to make sure it matches exactly what the hypervisor > expects. This VMBus based device ID is needed when attaching devices in > an L1VH based guest VM. Add a function to build and export it. Before > building it, a check is done to make sure the device is a valid VMBus > device. > > In remaining cases, PCI device ID is used. So, also make PCI device ID > build function hv_build_devid_type_pci() public.
The subject line should start with a verb to help say what this patch does. I guess it's something about adding a function to build the device IDs expected by the hypervisor? Would be good to include the function name too, e.g., something like this: PCI: hv: Add foo() to build hypervisor device IDs
