Hi Wanpeng, Thank you for the patch! Yet something to improve: [auto build test ERROR on kvm/linux-next] [also build test ERROR on v5.2-rc2 next-20190524] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Wanpeng-Li/KVM-X86-Implement-PV-sched-yield-hypercall/20190528-132021 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next config: x86_64-allyesconfig (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): arch/x86//kvm/x86.c: In function 'kvm_emulate_hypercall': >> arch/x86//kvm/x86.c:7243:7: error: 'KVM_HC_SCHED_YIELD' undeclared (first use in this function); did you mean 'KVM_HC_SEND_IPI'? case KVM_HC_SCHED_YIELD: ^~~~~~~~~~~~~~~~~~ KVM_HC_SEND_IPI arch/x86//kvm/x86.c:7243:7: note: each undeclared identifier is reported only once for each function it appears in vim +7243 arch/x86//kvm/x86.c 7196 7197 int kvm_emulate_hypercall(struct kvm_vcpu *vcpu) 7198 { 7199 unsigned long nr, a0, a1, a2, a3, ret; 7200 int op_64_bit; 7201 7202 if (kvm_hv_hypercall_enabled(vcpu->kvm)) 7203 return kvm_hv_hypercall(vcpu); 7204 7205 nr = kvm_rax_read(vcpu); 7206 a0 = kvm_rbx_read(vcpu); 7207 a1 = kvm_rcx_read(vcpu); 7208 a2 = kvm_rdx_read(vcpu); 7209 a3 = kvm_rsi_read(vcpu); 7210 7211 trace_kvm_hypercall(nr, a0, a1, a2, a3); 7212 7213 op_64_bit = is_64_bit_mode(vcpu); 7214 if (!op_64_bit) { 7215 nr &= 0xFFFFFFFF; 7216 a0 &= 0xFFFFFFFF; 7217 a1 &= 0xFFFFFFFF; 7218 a2 &= 0xFFFFFFFF; 7219 a3 &= 0xFFFFFFFF; 7220 } 7221 7222 if (kvm_x86_ops->get_cpl(vcpu) != 0) { 7223 ret = -KVM_EPERM; 7224 goto out; 7225 } 7226 7227 switch (nr) { 7228 case KVM_HC_VAPIC_POLL_IRQ: 7229 ret = 0; 7230 break; 7231 case KVM_HC_KICK_CPU: 7232 kvm_pv_kick_cpu_op(vcpu->kvm, a0, a1); 7233 ret = 0; 7234 break; 7235 #ifdef CONFIG_X86_64 7236 case KVM_HC_CLOCK_PAIRING: 7237 ret = kvm_pv_clock_pairing(vcpu, a0, a1); 7238 break; 7239 #endif 7240 case KVM_HC_SEND_IPI: 7241 ret = kvm_pv_send_ipi(vcpu->kvm, a0, a1, a2, a3, op_64_bit); 7242 break; > 7243 case KVM_HC_SCHED_YIELD: 7244 kvm_sched_yield(vcpu->kvm, a0); 7245 ret = 0; 7246 break; 7247 default: 7248 ret = -KVM_ENOSYS; 7249 break; 7250 } 7251 out: 7252 if (!op_64_bit) 7253 ret = (u32)ret; 7254 kvm_rax_write(vcpu, ret); 7255 7256 ++vcpu->stat.hypercalls; 7257 return kvm_skip_emulated_instruction(vcpu); 7258 } 7259 EXPORT_SYMBOL_GPL(kvm_emulate_hypercall); 7260 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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