tree: https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git hyperv-next head: 9c9e1c68259d6cf8a348289fd13ed8f320c0d662 commit: 6f9128509b3f298893a0102fac73035b05ad0aea [31/32] x86/hyperv: implement an MSI domain for root partition config: x86_64-randconfig-s022-20210209 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-215-g0fb77bb6-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git/commit/?... git remote add hyperv-linux https://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux.git git fetch --no-tags hyperv-linux hyperv-next git checkout 6f9128509b3f298893a0102fac73035b05ad0aea # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; "sparse warnings: (new ones prefixed by >>)" arch/x86/hyperv/irqdomain.c:27:18: sparse: expected void const [noderef] __percpu *__vpp_verify arch/x86/hyperv/irqdomain.c:27:18: sparse: got void [noderef] __percpu ** arch/x86/hyperv/irqdomain.c:27:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct hv_input_map_device_interrupt *input @@ got void [noderef] __percpu * @@ arch/x86/hyperv/irqdomain.c:27:15: sparse: expected struct hv_input_map_device_interrupt *input arch/x86/hyperv/irqdomain.c:27:15: sparse: got void [noderef] __percpu * arch/x86/hyperv/irqdomain.c:28:19: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got void [noderef] __percpu ** @@ arch/x86/hyperv/irqdomain.c:28:19: sparse: expected void const [noderef] __percpu *__vpp_verify arch/x86/hyperv/irqdomain.c:28:19: sparse: got void [noderef] __percpu ** arch/x86/hyperv/irqdomain.c:28:16: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct hv_output_map_device_interrupt *output @@ got void [noderef] __percpu * @@ arch/x86/hyperv/irqdomain.c:28:16: sparse: expected struct hv_output_map_device_interrupt *output arch/x86/hyperv/irqdomain.c:28:16: sparse: got void [noderef] __percpu * arch/x86/hyperv/irqdomain.c:80:18: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got void [noderef] __percpu ** @@ arch/x86/hyperv/irqdomain.c:80:18: sparse: expected void const [noderef] __percpu *__vpp_verify arch/x86/hyperv/irqdomain.c:80:18: sparse: got void [noderef] __percpu ** arch/x86/hyperv/irqdomain.c:80:15: sparse: expected struct hv_input_unmap_device_interrupt *input arch/x86/hyperv/irqdomain.c:80:15: sparse: got void [noderef] __percpu * vim +27 arch/x86/hyperv/irqdomain.c 14 15 static int hv_map_interrupt(union hv_device_id device_id, bool level, 16 int cpu, int vector, struct hv_interrupt_entry *entry) 17 { 18 struct hv_input_map_device_interrupt *input; 19 struct hv_output_map_device_interrupt *output; 20 struct hv_device_interrupt_descriptor *intr_desc; 21 unsigned long flags; 22 u64 status; 23 int nr_bank, var_size; 24 25 local_irq_save(flags); 26 28 output = *this_cpu_ptr(hyperv_pcpu_output_arg); 29 30 intr_desc = &input->interrupt_descriptor; 31 memset(input, 0, sizeof(*input)); 32 input->partition_id = hv_current_partition_id; 33 input->device_id = device_id.as_uint64; 34 intr_desc->interrupt_type = HV_X64_INTERRUPT_TYPE_FIXED; 35 intr_desc->vector_count = 1; 36 intr_desc->target.vector = vector; 37 38 if (level) 39 intr_desc->trigger_mode = HV_INTERRUPT_TRIGGER_MODE_LEVEL; 40 else 41 intr_desc->trigger_mode = HV_INTERRUPT_TRIGGER_MODE_EDGE; 42 43 intr_desc->target.vp_set.valid_bank_mask = 0; 44 intr_desc->target.vp_set.format = HV_GENERIC_SET_SPARSE_4K; 45 nr_bank = cpumask_to_vpset(&(intr_desc->target.vp_set), cpumask_of(cpu)); 46 if (nr_bank < 0) { 47 local_irq_restore(flags); 48 pr_err("%s: unable to generate VP set\n", __func__); 49 return EINVAL; 50 } 51 intr_desc->target.flags = HV_DEVICE_INTERRUPT_TARGET_PROCESSOR_SET; 52 53 /* 54 * var-sized hypercall, var-size starts after vp_mask (thus 55 * vp_set.format does not count, but vp_set.valid_bank_mask 56 * does). 57 */ 58 var_size = nr_bank + 1; 59 60 status = hv_do_rep_hypercall(HVCALL_MAP_DEVICE_INTERRUPT, 0, var_size, 61 input, output); 62 *entry = output->interrupt_entry; 63 64 local_irq_restore(flags); 65 66 if ((status & HV_HYPERCALL_RESULT_MASK) != HV_STATUS_SUCCESS) 67 pr_err("%s: hypercall failed, status %lld\n", __func__, status); 68 69 return status & HV_HYPERCALL_RESULT_MASK; 70 } 71 72 static int hv_unmap_interrupt(u64 id, struct hv_interrupt_entry *old_entry) 73 { 74 unsigned long flags; 75 struct hv_input_unmap_device_interrupt *input; 76 struct hv_interrupt_entry *intr_entry; 77 u64 status; 78 79 local_irq_save(flags); 81 82 memset(input, 0, sizeof(*input)); 83 intr_entry = &input->interrupt_entry; 84 input->partition_id = hv_current_partition_id; 85 input->device_id = id; 86 *intr_entry = *old_entry; 87 88 status = hv_do_hypercall(HVCALL_UNMAP_DEVICE_INTERRUPT, input, NULL); 89 local_irq_restore(flags); 90 91 return status & HV_HYPERCALL_RESULT_MASK; 92 } 93 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org