在 2025/12/1 9:10, David Matlack 写道:
On Mon, Dec 1, 2025 at 7:49 AM Zhu Yanjun <[email protected]> wrote:
在 2025/11/27 20:56, Zhu Yanjun 写道:
Hi, David
ERROR: modpost: "liveupdate_register_file_handler" [drivers/vfio/pci/
vfio-pci-core.ko] undefined!
ERROR: modpost: "vfio_pci_ops" [drivers/vfio/pci/vfio-pci-core.ko]
undefined!
ERROR: modpost: "liveupdate_enabled" [drivers/vfio/pci/vfio-pci-core.ko]
undefined!
ERROR: modpost: "liveupdate_unregister_file_handler" [drivers/vfio/pci/
vfio-pci-core.ko] undefined!
ERROR: modpost: "vfio_device_fops" [drivers/vfio/pci/vfio-pci-core.ko]
undefined!
ERROR: modpost: "vfio_pci_is_intel_display" [drivers/vfio/pci/vfio-pci-
core.ko] undefined!
ERROR: modpost: "vfio_pci_liveupdate_init" [drivers/vfio/pci/vfio-
pci.ko] undefined!
ERROR: modpost: "vfio_pci_liveupdate_cleanup" [drivers/vfio/pci/vfio-
pci.ko] undefined!
make[4]: *** [scripts/Makefile.modpost:147: Module.symvers] Error 1
make[3]: *** [Makefile:1960: modpost] Error 2
After I git clone the source code from the link https://github.com/
dmatlack/linux/tree/liveupdate/vfio/cdev/v1,
I found the above errors when I built the source code.
Perhaps the above errors can be solved by EXPORT_SYMBOL.
But I am not sure if a better solution can solve the above problems or not.
I reviewed this patch series in detail. If I’m understanding it
correctly, there appears to be a cyclic dependency issue. Specifically,
some functions in kernel module A depend on kernel module B, while at
the same time certain functions in module B depend on module A.
I’m not entirely sure whether this constitutes a real problem or if it’s
intentional design.
Thanks for your report. Can you share the .config file you used to
generate these errors?
IIRC, I used FC 42 default config. Perhaps you can make tests with it.
If this problem can not be reproduced, I will share my config with you.
Yanjun.Zhu
--
Best Regards,
Yanjun.Zhu
