On Thu, Sep 18, 2025 at 10:05:51AM +0200, Alexey Gladkov wrote: > For some modules, modalias is generated using the modpost utility and > the section is added to the module file. > > When a module is added inside vmlinux, modpost does not generate > modalias for such modules and the information is lost. > > As a result kmod (which uses modules.builtin.modinfo in userspace) > cannot determine that modalias is handled by a builtin kernel module. > > $ cat /sys/devices/pci0000:00/0000:00:14.0/modalias > pci:v00008086d0000A36Dsv00001043sd00008694bc0Csc03i30 > > $ modinfo xhci_pci > name: xhci_pci > filename: (builtin) > license: GPL > file: drivers/usb/host/xhci-pci > description: xHCI PCI Host Controller Driver > > Missing modalias "pci:v*d*sv*sd*bc0Csc03i30*" which will be generated by > modpost if the module is built separately. > > To fix this it is necessary to generate the same modalias for vmlinux as > for the individual modules. Fortunately '.vmlinux.export.o' is already > generated from which '.modinfo' can be extracted in the same way as for > vmlinux.o. > > Signed-off-by: Masahiro Yamada <[email protected]> > Signed-off-by: Alexey Gladkov <[email protected]> > Tested-by: Stephen Rothwell <[email protected]> > --- > include/linux/module.h | 4 ---- > scripts/Makefile.vmlinux | 4 +++- > scripts/mksysmap | 3 +++ > scripts/mod/file2alias.c | 19 ++++++++++++++++++- > scripts/mod/modpost.c | 15 +++++++++++++++ > scripts/mod/modpost.h | 2 ++ > 6 files changed, 41 insertions(+), 6 deletions(-) >
Reviewed-by: Nicolas Schier <[email protected]> -- Nicolas
