Hi Wanpeng, Thank you for the patch! Yet something to improve: [auto build test ERROR on kvm/linux-next] [also build test ERROR on v4.18-rc4 next-20180709] [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-Add-coalesced-PIO-support/20180710-182037 base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next config: mips-malta_kvm_defconfig (attached as .config) compiler: mipsel-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=mips All errors (new ones prefixed by >>): arch/mips/kvm/../../../virt/kvm/kvm_main.c: In function 'kvm_vm_ioctl_check_extension_generic': >> arch/mips/kvm/../../../virt/kvm/kvm_main.c:2939:7: error: 'KVM_CAP_COALESCED_PIO' undeclared (first use in this function); did you mean 'KVM_CAP_COALESCED_MMIO'? case KVM_CAP_COALESCED_PIO: ^~~~~~~~~~~~~~~~~~~~~ KVM_CAP_COALESCED_MMIO arch/mips/kvm/../../../virt/kvm/kvm_main.c:2939:7: note: each undeclared identifier is reported only once for each function it appears in >> arch/mips/kvm/../../../virt/kvm/kvm_main.c:2940:10: error: 'KVM_PIO_PAGE_OFFSET' undeclared (first use in this function); did you mean 'KVM_TRC_PAGE_FAULT'? return KVM_PIO_PAGE_OFFSET; ^~~~~~~~~~~~~~~~~~~ KVM_TRC_PAGE_FAULT vim +2939 arch/mips/kvm/../../../virt/kvm/kvm_main.c 2918 2919 static long kvm_vm_ioctl_check_extension_generic(struct kvm *kvm, long arg) 2920 { 2921 switch (arg) { 2922 case KVM_CAP_USER_MEMORY: 2923 case KVM_CAP_DESTROY_MEMORY_REGION_WORKS: 2924 case KVM_CAP_JOIN_MEMORY_REGIONS_WORKS: 2925 case KVM_CAP_INTERNAL_ERROR_DATA: 2926 #ifdef CONFIG_HAVE_KVM_MSI 2927 case KVM_CAP_SIGNAL_MSI: 2928 #endif 2929 #ifdef CONFIG_HAVE_KVM_IRQFD 2930 case KVM_CAP_IRQFD: 2931 case KVM_CAP_IRQFD_RESAMPLE: 2932 #endif 2933 case KVM_CAP_IOEVENTFD_ANY_LENGTH: 2934 case KVM_CAP_CHECK_EXTENSION_VM: 2935 return 1; 2936 #ifdef CONFIG_KVM_MMIO 2937 case KVM_CAP_COALESCED_MMIO: 2938 return KVM_COALESCED_MMIO_PAGE_OFFSET; > 2939 case KVM_CAP_COALESCED_PIO: > 2940 return KVM_PIO_PAGE_OFFSET; 2941 #endif 2942 #ifdef CONFIG_HAVE_KVM_IRQ_ROUTING 2943 case KVM_CAP_IRQ_ROUTING: 2944 return KVM_MAX_IRQ_ROUTES; 2945 #endif 2946 #if KVM_ADDRESS_SPACE_NUM > 1 2947 case KVM_CAP_MULTI_ADDRESS_SPACE: 2948 return KVM_ADDRESS_SPACE_NUM; 2949 #endif 2950 case KVM_CAP_MAX_VCPU_ID: 2951 return KVM_MAX_VCPU_ID; 2952 default: 2953 break; 2954 } 2955 return kvm_vm_ioctl_check_extension(kvm, arg); 2956 } 2957 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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