Messages in this thread | | | From | Arnd Bergmann <> | Date | Mon, 6 Dec 2021 09:14:33 +0100 | Subject | Re: [PATCH] eni_vdpa: alibaba: select VIRTIO_PCI_LIB |
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On Mon, Dec 6, 2021 at 4:12 AM Jason Wang <jasowang@redhat.com> wrote: > > On Sat, Dec 4, 2021 at 2:55 AM Arnd Bergmann <arnd@kernel.org> wrote: > > > > From: Arnd Bergmann <arnd@arndb.de> > > > > When VIRTIO_PCI_LIB is not built-in but the alibaba driver is, the > > kernel runs into a link error: > > > > x86_64-linux-ld: drivers/vdpa/alibaba/eni_vdpa.o: in function `eni_vdpa_set_features': > > eni_vdpa.c:(.text+0x23f): undefined reference to `vp_legacy_set_features' > > x86_64-linux-ld: drivers/vdpa/alibaba/eni_vdpa.o: in function `eni_vdpa_set_vq_state': > > eni_vdpa.c:(.text+0x2fe): undefined reference to `vp_legacy_get_queue_enable' > > x86_64-linux-ld: drivers/vdpa/alibaba/eni_vdpa.o: in function `eni_vdpa_set_vq_address': > > eni_vdpa.c:(.text+0x376): undefined reference to `vp_legacy_set_queue_address' > > x86_64-linux-ld: drivers/vdpa/alibaba/eni_vdpa.o: in function `eni_vdpa_set_vq_ready': > > eni_vdpa.c:(.text+0x3b4): undefined reference to `vp_legacy_set_queue_address' > > x86_64-linux-ld: drivers/vdpa/alibaba/eni_vdpa.o: in function `eni_vdpa_free_irq': > > eni_vdpa.c:(.text+0x460): undefined reference to `vp_legacy_queue_vector' > > x86_64-linux-ld: eni_vdpa.c:(.text+0x4b7): undefined reference to `vp_legacy_config_vector' > > x86_64-linux-ld: drivers/vdpa/alibaba/eni_vdpa.o: in function `eni_vdpa_reset': > > Intersting, all those belongs to the legacy library. > > And I just have a try and I can complie alibaba eni without > VIRTIO_PCI_LIB is set.
Ah, so the problem is in drivers/Makefile:
obj-$(CONFIG_VIRTIO) += virtio/ obj-$(CONFIG_VIRTIO_PCI_LIB) += virtio/
We only enter this directory when one of these two symbols is set, but in my randconfig build, neither one is. I'll send a new patch.
Arnd
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