On Thu, Aug 10, 2023 at 11:54:44AM -0600, Alex Williamson wrote: > On Thu, 10 Aug 2023 14:43:04 -0300 > Jason Gunthorpe <jgg@xxxxxxxxxx> wrote: > > > On Thu, Aug 10, 2023 at 11:40:08AM -0600, Alex Williamson wrote: > > > > > PCI Express® Base Specification Revision 6.0.1, pg 1461: > > > > > > 9.3.3.11 VF Device ID (Offset 1Ah) > > > > > > This field contains the Device ID that should be presented for every VF to the SI. > > > > > > VF Device ID may be different from the PF Device ID... > > > > > > That? Thanks, > > > > NVMe matches using the class code, IIRC there is language requiring > > the class code to be the same. > > Ok, yes: > > 7.5.1.1.6 Class Code Register (Offset 09h) > ... > The field in a PF and its associated VFs must return the same value > when read. > > Seems limiting, but it's indeed there. We've got a lot of cleanup to > do if we're going to start rejecting drivers for devices with PCI > spec violations though ;) Thanks, Well.. If we defacto say that Linux is endorsing ignoring this part of the spec then I predict we will see more vendors follow this approach. Jason
