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We hit > this building a minimal kernel for hosts with IDPF NICs. It can be > reproduced on x86_64 from allnoconfig by enabling PCI, PCI_MSI, NET, > NETDEVICES, ETHERNET, NET_VENDOR_INTEL and IDPF. > > Select AUXILIARY_BUS in IDPF, as ICE and I40E already do. The same > link failure was fixed for BNGE in commit d7065436e8a0 ("net: bnge: add > AUXILIARY_BUS to Kconfig dependencies"). > > Build-tested with that configuration on net-queue (dev-queue, > 34a70a40c954) and on mainline (067c5c24cef2): vmlinux fails to link > without this patch and links with it. Boot-tested on bare metal (AMD > EPYC) with a Google Cloud IDPF NIC, using a 6.18.60 kernel carrying the > same change and IDPF built in: idpf probes the NIC and its link comes > up. > > Fixes: f4312e6bfa2a ("idpf: implement core RDMA auxiliary dev create, init, and destroy") > Cc: stable@vger.kernel.org # 6.17+ > Signed-off-by: Darren Worrall Thank you! Acked-by: Przemek Kitszel > --- > The link failure was diagnosed, this patch drafted and the tests above > run with the help of an AI coding assistant. I reviewed the patch and > the test results. > --- > drivers/net/ethernet/intel/idpf/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/net/ethernet/intel/idpf/Kconfig b/drivers/net/ethernet/intel/idpf/Kconfig > index 586df3a4af..6b59173e0d 100644 > --- a/drivers/net/ethernet/intel/idpf/Kconfig > +++ b/drivers/net/ethernet/intel/idpf/Kconfig > @@ -5,6 +5,7 @@ config IDPF > tristate "Intel(R) Infrastructure Data Path Function Support" > depends on PCI_MSI > depends on PTP_1588_CLOCK_OPTIONAL > + select AUXILIARY_BUS > select DIMLIB > select LIBIE_CP > select LIBETH_XDP > > --- > base-commit: 34a70a40c954fb8044ecd124840a2c38cd3aa4cc > change-id: 20261111-idpf-auxiliary-bus-c0058e27cd9d > > Best regards, > -- > Darren Worrall > >