* Nadav Amit <na...@vmware.com> [181121 16:12]: > > On Nov 21, 2018, at 12:56 PM, Liam R. Howlett <liam.howl...@oracle.com> > > wrote: > > > > > > My out of tree driver build is now reporting issues with the jump table: > > > > ./include/linux/jump_label.h: In function ‘jump_entry_code’: > > ./include/linux/jump_label.h:153:14: error: dereferencing pointer to > > incomplete type ‘const struct jump_entry’ > > return entry->code; > > ^~ > > ./include/linux/jump_label.h: In function ‘jump_entry_set_init’: > > ./include/linux/jump_label.h:180:7: error: dereferencing pointer to > > incomplete type ‘struct jump_entry’ > > entry->key |= 2; > > ^~ > > ./include/linux/jump_label.h: At top level: > > ./include/linux/jump_label.h:212:26: error: array type has incomplete > > element type ‘struct jump_entry’ > > extern struct jump_entry __start___jump_table[]; > > ^~~~~~~~~~~~~~~~~~~~ > > ./include/linux/jump_label.h:213:26: error: array type has incomplete > > element type ‘struct jump_entry’ > > extern struct jump_entry __stop___jump_table[]; > > ^~~~~~~~~~~~~~~~~~~ > > > > > > This happens in v4.20-rc3 as well, so I bisected between v4.19 to > > v4.20-rc1 which resulted in the following commit: > > > > b34006c4258c9c86597b6b7123d6a9a3513d6cd7 is the first bad commit > > commit b34006c4258c9c86597b6b7123d6a9a3513d6cd7 > > Author: Ard Biesheuvel <ard.biesheu...@linaro.org> > > Date: Tue Sep 18 23:51:41 2018 -0700 > > > > x86/jump_table: Use relative references > > > > > > > > > > Initially I assumed this was my own fault, but my module does not have > > these issues when using v4.19. Is there anything I should try/change in > > my module makefile, includes, etc to support this relative reference > > code? > > Do you see HAVE_ARCH_JUMP_LABEL_RELATIVE set in your kernel config? >
Yes: $ grep HAVE_ARCH_JUMP_LABEL_RELATIVE .config CONFIG_HAVE_ARCH_JUMP_LABEL_RELATIVE=y I should have mentioned I ran 'make defoldconfig' between each bisect.
