> On Feb 12, 2017, at 5:19 AM, Thomas Gleixner <[email protected]> wrote: > >> On Sat, 11 Feb 2017, kbuild test robot wrote: >> >> Hi Hoeun, >> >> [auto build test ERROR on linus/master] >> [also build test ERROR on v4.10-rc7 next-20170210] >> [if your patch is applied to the wrong git tree, please drop us a note to >> help improve the system] >> >> url: >> https://github.com/0day-ci/linux/commits/Hoeun-Ryu/fork-free-vmapped-stacks-in-cache-when-cpus-are-offline/20170211-183401 >> config: ia64-allmodconfig (attached as .config) >> compiler: ia64-linux-gcc (GCC) 6.2.0 >> reproduce: >> wget >> https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross >> -O ~/bin/make.cross >> chmod +x ~/bin/make.cross >> # save the attached .config to linux build tree >> make.cross ARCH=ia64 >> >> All errors (new ones prefixed by >>): >> >> kernel/fork.c: In function 'fork_init': >>>> kernel/fork.c:483:2: error: implicit declaration of function >>>> 'vm_stack_cache_init' [-Werror=implicit-function-declaration] >> vm_stack_cache_init(); >> ^~~~~~~~~~~~~~~~~~~ > > Right. This needs to move to a different place as that part is nested inside > > #ifndef CONFIG_ARCH_THREAD_STACK_ALLOCATOR > > That's an horrible ifdef maze in that file. >
I think we should rollback to v4. Do you agree? > Thanks, > > tglx
