Hi Will, FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: c9b95e5961c0294e0efffeaa847c1a1e6369204c commit: da48d094ce5d7c7dcdad9011648a81c42fd1c2ef Kconfig: remove HAVE_LATENCYTOP_SUPPORT date: 7 months ago config: ia64-allyesconfig (attached as .config) compiler: ia64-linux-gcc (GCC) 4.9.0 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 git checkout da48d094ce5d7c7dcdad9011648a81c42fd1c2ef # save the attached .config to linux build tree make.cross ARCH=ia64 All errors (new ones prefixed by >>): arch/ia64/kernel/ivt.S: Assembler messages: >> arch/ia64/kernel/ivt.S:759: Error: Operand 3 of `add' should be a general >> register r0-r3 -- arch/ia64/kernel/entry.S: Assembler messages: >> arch/ia64/kernel/entry.S:621: Error: Operand 2 of `adds' should be a 14-bit >> integer (-8192-8191) arch/ia64/kernel/entry.S:728: Error: Operand 2 of `adds' should be a 14-bit integer (-8192-8191) arch/ia64/kernel/entry.S:859: Error: Operand 2 of `adds' should be a 14-bit integer (-8192-8191) -- arch/ia64/kernel/fsys.S: Assembler messages: >> arch/ia64/kernel/fsys.S:67: Error: Operand 3 of `add' should be a general >> register r0-r3 arch/ia64/kernel/fsys.S:97: Error: Operand 3 of `add' should be a general register r0-r3 arch/ia64/kernel/fsys.S:193: Error: Operand 3 of `add' should be a general register r0-r3 arch/ia64/kernel/fsys.S:336: Error: Operand 3 of `add' should be a general register r0-r3 arch/ia64/kernel/fsys.S:338: Error: Operand 3 of `add' should be a general register r0-r3 vim +759 arch/ia64/kernel/ivt.S f8fa5448 David Mosberger-Tang 2005-04-27 743 nop.m 0 // M f8fa5448 David Mosberger-Tang 2005-04-27 744 mov r20=r1 // A save r1 f8fa5448 David Mosberger-Tang 2005-04-27 745 f8fa5448 David Mosberger-Tang 2005-04-27 746 nop.m 0 f8fa5448 David Mosberger-Tang 2005-04-27 747 movl r30=sys_call_table // X f8fa5448 David Mosberger-Tang 2005-04-27 748 498c5170 Isaku Yamahata 2008-05-19 749 MOV_FROM_IIP(r28) // M2 (2 cyc) f8fa5448 David Mosberger-Tang 2005-04-27 750 cmp.eq p0,p7=r18,r17 // I0 is this a system call? f8fa5448 David Mosberger-Tang 2005-04-27 751 (p7) br.cond.spnt non_syscall // B no -> f8fa5448 David Mosberger-Tang 2005-04-27 752 // f8fa5448 David Mosberger-Tang 2005-04-27 753 // From this point on, we are definitely on the syscall-path f8fa5448 David Mosberger-Tang 2005-04-27 754 // and we can use (non-banked) scratch registers. f8fa5448 David Mosberger-Tang 2005-04-27 755 // f8fa5448 David Mosberger-Tang 2005-04-27 756 /////////////////////////////////////////////////////////////////////// f8fa5448 David Mosberger-Tang 2005-04-27 757 mov r1=r16 // A move task-pointer to "addl"-addressable reg f8fa5448 David Mosberger-Tang 2005-04-27 758 mov r2=r16 // A setup r2 for ia64_syscall_setup f8fa5448 David Mosberger-Tang 2005-04-27 @759 add r9=TI_FLAGS+IA64_TASK_SIZE,r16 // A r9 = ¤t_thread_info()->flags f8fa5448 David Mosberger-Tang 2005-04-27 760 f8fa5448 David Mosberger-Tang 2005-04-27 761 adds r16=IA64_TASK_THREAD_ON_USTACK_OFFSET,r16 f8fa5448 David Mosberger-Tang 2005-04-27 762 adds r15=-1024,r15 // A subtract 1024 from syscall number ^1da177e Linus Torvalds 2005-04-16 763 mov r3=NR_syscalls - 1 ^1da177e Linus Torvalds 2005-04-16 764 ;; f8fa5448 David Mosberger-Tang 2005-04-27 765 ld1.bias r17=[r16] // M0|1 r17 = current->thread.on_ustack flag f8fa5448 David Mosberger-Tang 2005-04-27 766 ld4 r9=[r9] // M0|1 r9 = current_thread_info()->flags f8fa5448 David Mosberger-Tang 2005-04-27 767 extr.u r8=r29,41,2 // I0 extract ei field from cr.ipsr :::::: The code at line 759 was first introduced by commit :::::: f8fa5448fc9b4a7806b1297a0b57808f12fe4d43 [IA64] Reschedule break_fault() for better performance. :::::: TO: David Mosberger-Tang <dav...@hpl.hp.com> :::::: CC: Tony Luck <tony.l...@intel.com> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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