On 09/18/2015 04:39 PM, kbuild test robot wrote:
tree: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue
head: ed393e4134de0dd02d8ba98ca8ce3ae65d1eb567
commit: 46f4c309534b10ca1026273abe38955d3cff4023 [27/38] kvm/x86: Hyper-V HV_X64_MSR_VP_RUNTIME support
reproduce:
# apt-get install sparse
git checkout 46f4c309534b10ca1026273abe38955d3cff4023
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
arch/x86/kvm/hyperv.c:186:41: sparse: incorrect type in argument 2 (different modifiers)
arch/x86/kvm/hyperv.c:186:41: expected unsigned long [nocast] [usertype] *ut
arch/x86/kvm/hyperv.c:186:41: got unsigned long *<noident>
arch/x86/kvm/hyperv.c:186:41: sparse: implicit cast to nocast type
arch/x86/kvm/hyperv.c:186:49: sparse: incorrect type in argument 3 (different modifiers)
arch/x86/kvm/hyperv.c:186:49: expected unsigned long [nocast] [usertype] *st
arch/x86/kvm/hyperv.c:186:49: got unsigned long *<noident>
arch/x86/kvm/hyperv.c:186:49: sparse: implicit cast to nocast type
vim +186 arch/x86/kvm/hyperv.c
170 kvm_make_request(KVM_REQ_HV_RESET, vcpu);
171 }
172 break;
173 default:
174 vcpu_unimpl(vcpu, "Hyper-V uhandled wrmsr: 0x%x data 0x%llx\n",
175 msr, data);
176 return 1;
177 }
178 return 0;
179 }
180
181 /* Calculate cpu time spent by current task in 100ns units */
182 static u64 current_task_runtime_100ns(void)
183 {
184 cputime_t utime, stime;
185
> 186 task_cputime_adjusted(current, &utime, &stime);
187 return div_u64(cputime_to_nsecs(utime + stime), 100);
188 }
189
190 static int kvm_hv_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host)
191 {
192 struct kvm_vcpu_hv *hv = &vcpu->arch.hyperv;
193
194 switch (msr) {
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
can not get an idea what is this warning about...
For me it looks pretty lame.
Den
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