On Tue, 2024-05-28 at 09:50 -1000, Tejun Heo wrote: > (cc'ing loongarch folks) > > On Mon, May 27, 2024 at 04:14:10PM +0800, kernel test robot wrote: > > tree/branch: https://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git for-next > > branch HEAD: a8d55ff5f3acf52e6380976fb5d0a9172032dcb0 kernel/cgroup: cleanup cgroup_base_files when fail to add cgroup_psi_files > > > > Error/Warning reports: > > > > https://lore.kernel.org/oe-kbuild-all/202405270728.d1SabzhU-lkp@xxxxxxxxx > > > > Error/Warning: (recently discovered and may have been fixed) > > > > kernel/cgroup/pids.o: warning: objtool: __jump_table+0x0: special: can't find orig instruction > > > > Error/Warning ids grouped by kconfigs: > > > > gcc_recent_errors > > `-- loongarch-defconfig > > `-- kernel-cgroup-pids.o:warning:objtool:__jump_table:special:can-t-find-orig-instruction > > I don't know what to make of this build warning. I can't reproduce the > problem on x86 and the referenced commit doesn't have anything special. It > *looks* like it could be something specific to loongarch. Can you guys > please take a look? For now on LoongArch objtool does not work well with jump tables. We already have: ifdef CONFIG_OBJTOOL KBUILD_CFLAGS += -fno-jump-tables endif So why this doesn't stop GCC from producing a jump table? -- Xi Ruoyao <xry111@xxxxxxxxxxx> School of Aerospace Science and Technology, Xidian University
