Hi Jinank, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on kvmarm/next] [also build test WARNING on arm/for-next soc/for-next arm64/for-next/core v5.13-rc4 next-20210603] [cannot apply to xlnx/master] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Jinank-Jain/KVM-arm64-Properly-restore-PMU-state-during-live-migration/20210603-190755 base: https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next config: arm64-allyesconfig (attached as .config) compiler: aarch64-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://github.com/0day-ci/linux/commit/08cb3fc07cb1a68f15eb4a3e68e886c40732e699 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jinank-Jain/KVM-arm64-Properly-restore-PMU-state-during-live-migration/20210603-190755 git checkout 08cb3fc07cb1a68f15eb4a3e68e886c40732e699 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): arch/arm64/kvm/pmu.c: In function 'kvm_vcpu_pmu_restore': >> arch/arm64/kvm/pmu.c:172:2: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement] 172 | u64 val = __vcpu_sys_reg(vcpu, PMCR_EL0); | ^~~ vim +172 arch/arm64/kvm/pmu.c 163 164 /* 165 * Restore PMU events on first vcpu load. 166 */ 167 void kvm_vcpu_pmu_restore(struct kvm_vcpu *vcpu) 168 { 169 if (kvm_arm_pmu_v3_restored(vcpu)) 170 return; 171 > 172 u64 val = __vcpu_sys_reg(vcpu, PMCR_EL0); 173 174 kvm_pmu_handle_pmcr(vcpu, val); 175 176 vcpu->arch.pmu.restored = true; 177 } 178 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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