Hi, Looks like we need help to overcome this alpha specific issue:
On Mon, Jan 07, 2019 at 03:05:23PM +0800, kbuild test robot wrote: > Hi Elvira, > > Thank you for the patch! Yet something to improve: > > [auto build test ERROR on linus/master] > [also build test ERROR on v5.0-rc1] > [cannot apply to next-20190103] > [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/Dmitry-V-Levin/asm-generic-syscall-h-prepare-for-inclusion-by-other-files/20190107-115241 > config: alpha-allmodconfig (attached as .config) > compiler: alpha-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 > reproduce: > wget > https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O > ~/bin/make.cross > chmod +x ~/bin/make.cross > # save the attached .config to linux build tree > GCC_VERSION=7.2.0 make.cross ARCH=alpha > > All errors (new ones prefixed by >>): > > kernel/ptrace.c: In function 'ptrace_get_syscall_info': > >> kernel/ptrace.c:944:20: error: implicit declaration of function > >> 'user_stack_pointer'; did you mean 'xa_tag_pointer'? > >> [-Werror=implicit-function-declaration] > .stack_pointer = user_stack_pointer(regs), > ^~~~~~~~~~~~~~~~~~ > xa_tag_pointer > In file included from arch/alpha/include/asm/syscall.h:6:0, > from include/linux/audit.h:214, > from kernel/ptrace.c:24: The mandatory function static inline unsigned long user_stack_pointer(struct pt_regs *regs) is not implemented on alpha, and I don't know how to implement it because the relevant information is not available via struct pt_regs. On alpha task_thread_info(task)->pcb.usp is used to obtain the user stack pointer. -- ldv
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