Messages in this thread | | | Date | Thu, 18 Nov 2021 08:09:04 +0800 | From | kernel test robot <> | Subject | arch/x86/hyperv/ivm.c:43:25: sparse: sparse: incorrect type in initializer (different address spaces) |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: ee1703cda8dc777e937dec172da55beaf1a74919 commit: 810a521265023a1d5c6c081ea2d216bc63d422f5 x86/hyperv: Add new hvcall guest address host visibility support date: 3 weeks ago config: i386-randconfig-s002-20211109 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=810a521265023a1d5c6c081ea2d216bc63d422f5 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 810a521265023a1d5c6c081ea2d216bc63d422f5 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>) >> arch/x86/hyperv/ivm.c:43:25: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void const [noderef] __percpu *__vpp_verify @@ got void [noderef] __percpu ** @@ arch/x86/hyperv/ivm.c:43:25: sparse: expected void const [noderef] __percpu *__vpp_verify arch/x86/hyperv/ivm.c:43:25: sparse: got void [noderef] __percpu **
vim +43 arch/x86/hyperv/ivm.c
15 16 /* 17 * hv_mark_gpa_visibility - Set pages visible to host via hvcall. 18 * 19 * In Isolation VM, all guest memory is encrypted from host and guest 20 * needs to set memory visible to host via hvcall before sharing memory 21 * with host. 22 */ 23 static int hv_mark_gpa_visibility(u16 count, const u64 pfn[], 24 enum hv_mem_host_visibility visibility) 25 { 26 struct hv_gpa_range_for_visibility **input_pcpu, *input; 27 u16 pages_processed; 28 u64 hv_status; 29 unsigned long flags; 30 31 /* no-op if partition isolation is not enabled */ 32 if (!hv_is_isolation_supported()) 33 return 0; 34 35 if (count > HV_MAX_MODIFY_GPA_REP_COUNT) { 36 pr_err("Hyper-V: GPA count:%d exceeds supported:%lu\n", count, 37 HV_MAX_MODIFY_GPA_REP_COUNT); 38 return -EINVAL; 39 } 40 41 local_irq_save(flags); 42 input_pcpu = (struct hv_gpa_range_for_visibility **) > 43 this_cpu_ptr(hyperv_pcpu_input_arg); 44 input = *input_pcpu; 45 if (unlikely(!input)) { 46 local_irq_restore(flags); 47 return -EINVAL; 48 } 49 50 input->partition_id = HV_PARTITION_ID_SELF; 51 input->host_visibility = visibility; 52 input->reserved0 = 0; 53 input->reserved1 = 0; 54 memcpy((void *)input->gpa_page_list, pfn, count * sizeof(*pfn)); 55 hv_status = hv_do_rep_hypercall( 56 HVCALL_MODIFY_SPARSE_GPA_PAGE_HOST_VISIBILITY, count, 57 0, input, &pages_processed); 58 local_irq_restore(flags); 59 60 if (hv_result_success(hv_status)) 61 return 0; 62 else 63 return -EFAULT; 64 } 65
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