tree: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue head: 8c154ff6ee99d2d467c3c964ef6a478ca7614155 commit: adfc38573cf7a7058d4cc1163b239c087accfa3d [12/69] kvm: nVMX: Introduce KVM_CAP_NESTED_STATE reproduce: # apt-get install sparse git checkout adfc38573cf7a7058d4cc1163b239c087accfa3d make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) arch/x86/kvm/x86.c:6982:34: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:6982:34: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:2208:38: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const [noderef] <asn:1>*<noident> @@ got d const [noderef] <asn:1>*<noident> @@ arch/x86/kvm/x86.c:2208:38: expected void const [noderef] <asn:1>*<noident> arch/x86/kvm/x86.c:2208:38: got unsigned char [usertype] * >> arch/x86/kvm/x86.c:2950:61: sparse: Using plain integer as NULL pointer arch/x86/kvm/x86.c:4703:21: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:4723:21: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:4806:35: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:4806:35: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:4898:36: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:4898:36: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:5073:9: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:5189:31: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:7730:15: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:7758:17: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:7759:25: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:8632:27: sparse: expression using sizeof(void) arch/x86/kvm/x86.c:8918:16: sparse: incompatible types in comparison expression (different address spaces) include/linux/mm.h:572:13: sparse: undefined identifier '__builtin_mul_overflow' include/linux/mm.h:572:13: sparse: not a function <noident> arch/x86/include/asm/paravirt.h:788:9: sparse: context imbalance in 'vcpu_enter_guest' - unexpected unlock include/linux/mm.h:572:13: sparse: call with no type! vim +2950 arch/x86/kvm/x86.c 2845 2846 int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) 2847 { 2848 int r = 0; 2849 2850 switch (ext) { 2851 case KVM_CAP_IRQCHIP: 2852 case KVM_CAP_HLT: 2853 case KVM_CAP_MMU_SHADOW_CACHE_CONTROL: 2854 case KVM_CAP_SET_TSS_ADDR: 2855 case KVM_CAP_EXT_CPUID: 2856 case KVM_CAP_EXT_EMUL_CPUID: 2857 case KVM_CAP_CLOCKSOURCE: 2858 case KVM_CAP_PIT: 2859 case KVM_CAP_NOP_IO_DELAY: 2860 case KVM_CAP_MP_STATE: 2861 case KVM_CAP_SYNC_MMU: 2862 case KVM_CAP_USER_NMI: 2863 case KVM_CAP_REINJECT_CONTROL: 2864 case KVM_CAP_IRQ_INJECT_STATUS: 2865 case KVM_CAP_IOEVENTFD: 2866 case KVM_CAP_IOEVENTFD_NO_LENGTH: 2867 case KVM_CAP_PIT2: 2868 case KVM_CAP_PIT_STATE2: 2869 case KVM_CAP_SET_IDENTITY_MAP_ADDR: 2870 case KVM_CAP_XEN_HVM: 2871 case KVM_CAP_VCPU_EVENTS: 2872 case KVM_CAP_HYPERV: 2873 case KVM_CAP_HYPERV_VAPIC: 2874 case KVM_CAP_HYPERV_SPIN: 2875 case KVM_CAP_HYPERV_SYNIC: 2876 case KVM_CAP_HYPERV_SYNIC2: 2877 case KVM_CAP_HYPERV_VP_INDEX: 2878 case KVM_CAP_HYPERV_EVENTFD: 2879 case KVM_CAP_HYPERV_TLBFLUSH: 2880 case KVM_CAP_PCI_SEGMENT: 2881 case KVM_CAP_DEBUGREGS: 2882 case KVM_CAP_X86_ROBUST_SINGLESTEP: 2883 case KVM_CAP_XSAVE: 2884 case KVM_CAP_ASYNC_PF: 2885 case KVM_CAP_GET_TSC_KHZ: 2886 case KVM_CAP_KVMCLOCK_CTRL: 2887 case KVM_CAP_READONLY_MEM: 2888 case KVM_CAP_HYPERV_TIME: 2889 case KVM_CAP_IOAPIC_POLARITY_IGNORED: 2890 case KVM_CAP_TSC_DEADLINE_TIMER: 2891 case KVM_CAP_ENABLE_CAP_VM: 2892 case KVM_CAP_DISABLE_QUIRKS: 2893 case KVM_CAP_SET_BOOT_CPU_ID: 2894 case KVM_CAP_SPLIT_IRQCHIP: 2895 case KVM_CAP_IMMEDIATE_EXIT: 2896 case KVM_CAP_GET_MSR_FEATURES: 2897 r = 1; 2898 break; 2899 case KVM_CAP_SYNC_REGS: 2900 r = KVM_SYNC_X86_VALID_FIELDS; 2901 break; 2902 case KVM_CAP_ADJUST_CLOCK: 2903 r = KVM_CLOCK_TSC_STABLE; 2904 break; 2905 case KVM_CAP_X86_DISABLE_EXITS: 2906 r |= KVM_X86_DISABLE_EXITS_HLT | KVM_X86_DISABLE_EXITS_PAUSE; 2907 if(kvm_can_mwait_in_guest()) 2908 r |= KVM_X86_DISABLE_EXITS_MWAIT; 2909 break; 2910 case KVM_CAP_X86_SMM: 2911 /* SMBASE is usually relocated above 1M on modern chipsets, 2912 * and SMM handlers might indeed rely on 4G segment limits, 2913 * so do not report SMM to be available if real mode is 2914 * emulated via vm86 mode. Still, do not go to great lengths 2915 * to avoid userspace's usage of the feature, because it is a 2916 * fringe case that is not enabled except via specific settings 2917 * of the module parameters. 2918 */ 2919 r = kvm_x86_ops->has_emulated_msr(MSR_IA32_SMBASE); 2920 break; 2921 case KVM_CAP_VAPIC: 2922 r = !kvm_x86_ops->cpu_has_accelerated_tpr(); 2923 break; 2924 case KVM_CAP_NR_VCPUS: 2925 r = KVM_SOFT_MAX_VCPUS; 2926 break; 2927 case KVM_CAP_MAX_VCPUS: 2928 r = KVM_MAX_VCPUS; 2929 break; 2930 case KVM_CAP_NR_MEMSLOTS: 2931 r = KVM_USER_MEM_SLOTS; 2932 break; 2933 case KVM_CAP_PV_MMU: /* obsolete */ 2934 r = 0; 2935 break; 2936 case KVM_CAP_MCE: 2937 r = KVM_MAX_MCE_BANKS; 2938 break; 2939 case KVM_CAP_XCRS: 2940 r = boot_cpu_has(X86_FEATURE_XSAVE); 2941 break; 2942 case KVM_CAP_TSC_CONTROL: 2943 r = kvm_has_tsc_control; 2944 break; 2945 case KVM_CAP_X2APIC_API: 2946 r = KVM_X2APIC_API_VALID_FLAGS; 2947 break; 2948 case KVM_CAP_NESTED_STATE: 2949 r = kvm_x86_ops->get_nested_state ? > 2950 kvm_x86_ops->get_nested_state(NULL, 0, 0) : 0; 2951 break; 2952 default: 2953 break; 2954 } 2955 return r; 2956 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
