Hi Vitaly,
FYI, the error/warning still remains.
tree:
https://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git x86/entry
head: 7f5a4e54ac5fab86776ca040aa9b998e35bf7a86
commit: fad1940a6a856f59b073e8650e02052ce531154c [4/119] x86/xen: Split HVM vector
callback setup and interrupt gate allocation
config: x86_64-randconfig-a001-20200524 (attached as .config)
compiler: clang version 11.0.0 (
https://github.com/llvm/llvm-project
3393cc4cebf9969db94dc424b7a2b6195589c33b)
reproduce (this is a W=1 build):
wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
git checkout fad1940a6a856f59b073e8650e02052ce531154c
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>, old ones prefixed by <<):
> drivers/xen/events/events_base.c:1664:6: warning: no previous
prototype for function 'xen_setup_callback_vector' [-Wmissing-prototypes]
void xen_setup_callback_vector(void) {}
^
drivers/xen/events/events_base.c:1664:1: note: declare 'static' if the function is
not intended to be used outside of this translation unit
void xen_setup_callback_vector(void) {}
^
static
1 warning generated.
vim +/xen_setup_callback_vector +1664 drivers/xen/events/events_base.c
1654
1655 static __init void xen_alloc_callback_vector(void)
1656 {
1657 if (!xen_have_vector_callback)
1658 return;
1659
1660 pr_info("Xen HVM callback vector for event delivery is enabled\n");
1661 alloc_intr_gate(HYPERVISOR_CALLBACK_VECTOR, xen_hvm_callback_vector);
1662 }
1663 #else
1664 void xen_setup_callback_vector(void) {}
1665 static
inline void xen_alloc_callback_vector(void) {}
1666 #endif
1667
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org