tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   debe436e77c72fcee804fb867f275e6d31aa999c
commit: 0a86512dc113e4de6550d49f276142009231c846 RISC-V: KVM: Factor-out FP virtualization into separate sources
date:   11 days ago
config: riscv-allyesconfig (attached as .config)
compiler: riscv64-linux-gcc (GCC) 11.2.0
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0a86512dc113e4de6550d49f276142009231c846
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 0a86512dc113e4de6550d49f276142009231c846
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=riscv 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> arch/riscv/kvm/vcpu_fp.c:29:6: error: no previous prototype for 'kvm_riscv_vcpu_fp_clean' [-Werror=missing-prototypes]
      29 | void kvm_riscv_vcpu_fp_clean(struct kvm_cpu_context *cntx)
         |      ^~~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/kvm_riscv_vcpu_fp_clean +29 arch/riscv/kvm/vcpu_fp.c

    28	
  > 29	void kvm_riscv_vcpu_fp_clean(struct kvm_cpu_context *cntx)
    30	{
    31		cntx->sstatus &= ~SR_FS;
    32		cntx->sstatus |= SR_FS_CLEAN;
    33	}
    34	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org