tree: https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2021.05.18a head: 086e6d19878e9b3c6b3b97599229b4b7bdfe1876 commit: faec837f559391c744d56292dfa261c7682102a4 [19/26] EXP rcu/tree: Cconsider time a VM was suspended config: powerpc-allyesconfig (attached as .config) compiler: powerpc64-linux-gcc (GCC) 9.3.0 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/paulmck/linux-rcu.git/com... git remote add rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git git fetch --no-tags rcu dev.2021.05.18a git checkout faec837f559391c744d56292dfa261c7682102a4 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from arch/powerpc/include/asm/epapr_hcalls.h:53, from arch/powerpc/include/uapi/asm/kvm_para.h:82, from arch/powerpc/include/asm/kvm_para.h:13, from kernel/rcu/tree_stall.h:10, from kernel/rcu/tree.c:4783: arch/powerpc/include/asm/kvm_para.h: In function 'kvm_arch_para_features': 27 | if(epapr_hypercall0_1(KVM_HCALL_TOKEN(KVM_HC_FEATURES), &r)) | ^~~~~~~~~~~~~~~ arch/powerpc/include/uapi/asm/epapr_hcalls.h:75:51: note: in definition of macro '_EV_HCALL_TOKEN' 75 | #define _EV_HCALL_TOKEN(id, num) (((id) << 16) | (num)) | ^~~ arch/powerpc/include/asm/kvm_para.h:27:24: note: in expansion of macro 'KVM_HCALL_TOKEN' 27 | if(epapr_hypercall0_1(KVM_HCALL_TOKEN(KVM_HC_FEATURES), &r)) | ^~~~~~~~~~~~~~~ arch/powerpc/include/asm/kvm_para.h:27:40: note: each undeclared identifier is reported only once for each function it appears in 27 | if(epapr_hypercall0_1(KVM_HCALL_TOKEN(KVM_HC_FEATURES), &r)) | ^~~~~~~~~~~~~~~ arch/powerpc/include/uapi/asm/epapr_hcalls.h:75:51: note: in definition of macro '_EV_HCALL_TOKEN' 75 | #define _EV_HCALL_TOKEN(id, num) (((id) << 16) | (num)) | ^~~ arch/powerpc/include/asm/kvm_para.h:27:24: note: in expansion of macro 'KVM_HCALL_TOKEN' 27 | if(epapr_hypercall0_1(KVM_HCALL_TOKEN(KVM_HC_FEATURES), &r)) | ^~~~~~~~~~~~~~~ vim +/KVM_HC_FEATURES +27 arch/powerpc/include/asm/kvm_para.h bbf45ba57eaec5 include/asm-powerpc/kvm_para.h Hollis Blanchard 2008-04-16 19 bbf45ba57eaec5 include/asm-powerpc/kvm_para.h Hollis Blanchard 2008-04-16 20 static inline unsigned int kvm_arch_para_features(void) bbf45ba57eaec5 include/asm-powerpc/kvm_para.h Hollis Blanchard 2008-04-16 21 { 2a342ed57756ad arch/powerpc/include/asm/kvm_para.h Alexander Graf 2010-07-29 22 unsigned long r; 2a342ed57756ad arch/powerpc/include/asm/kvm_para.h Alexander Graf 2010-07-29 23 2a342ed57756ad arch/powerpc/include/asm/kvm_para.h Alexander Graf 2010-07-29 24 if (!kvm_para_available()) bbf45ba57eaec5 include/asm-powerpc/kvm_para.h Hollis Blanchard 2008-04-16 25 return 0; 2a342ed57756ad arch/powerpc/include/asm/kvm_para.h Alexander Graf 2010-07-29 26 b1f0d94c26b64e arch/powerpc/include/asm/kvm_para.h Bharat Bhushan 2013-10-08 @27 if(epapr_hypercall0_1(KVM_HCALL_TOKEN(KVM_HC_FEATURES), &r)) 2a342ed57756ad arch/powerpc/include/asm/kvm_para.h Alexander Graf 2010-07-29 28 return 0; 2a342ed57756ad arch/powerpc/include/asm/kvm_para.h Alexander Graf 2010-07-29 29 2a342ed57756ad arch/powerpc/include/asm/kvm_para.h Alexander Graf 2010-07-29 30 return r; bbf45ba57eaec5 include/asm-powerpc/kvm_para.h Hollis Blanchard 2008-04-16 31 } bbf45ba57eaec5 include/asm-powerpc/kvm_para.h Hollis Blanchard 2008-04-16 32 :::::: The code at line 27 was first introduced by commit :::::: b1f0d94c26b64e814243b736f47e7ef40d96432c kvm/powerpc: move kvm_hypercall0() and friends to epapr_hypercall0() :::::: TO: Bharat Bhushan <r65777(a)freescale.com&gt; :::::: CC: Alexander Graf <agraf(a)suse.de&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org