This is missing from the patch:
diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig
index 70691c08e1ed..cca7e065a075 100644
--- a/virt/kvm/Kconfig
+++ b/virt/kvm/Kconfig
@@ -51,3 +51,6 @@ config KVM_COMPAT
config HAVE_KVM_IRQ_BYPASS
bool
+
+config HAVE_KVM_VCPU_ASYNC_IOCTL
+ bool
Paolo
----- Original Message -----
> From: "kbuild test robot" <fengguang.wu@xxxxxxxxx>
> To: "Paolo Bonzini" <pbonzini@xxxxxxxxxx>
> Cc: kbuild-all@xxxxxx, kvm@xxxxxxxxxxxxxxx, "Robert Hu" <robert.hu@xxxxxxxxx>, "Farrah Chen" <farrah.chen@xxxxxxxxx>,
> "Christoffer Dall" <christoffer.dall@xxxxxxxxxx>, "Cornelia Huck" <cohuck@xxxxxxxxxx>
> Sent: Wednesday, December 13, 2017 2:16:58 PM
> Subject: [kvm:queue 47/61] arch/s390/kvm/kvm-s390.c:3728:6: error: redefinition of 'kvm_arch_vcpu_async_ioctl'
>
> tree: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue
> head: 19b22110fcf48c888b556c7ae97511d225f39777
> commit: bcd8c2d624c37d36e2d33fef9766d701c0ea77f3 [47/61] KVM: introduce
> kvm_arch_vcpu_async_ioctl
> config: s390-allmodconfig (attached as .config)
> compiler: s390x-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
> git checkout bcd8c2d624c37d36e2d33fef9766d701c0ea77f3
> # save the attached .config to linux build tree
> make.cross ARCH=s390
>
> All errors (new ones prefixed by >>):
>
> >> arch/s390/kvm/kvm-s390.c:3728:6: error: redefinition of
> >> 'kvm_arch_vcpu_async_ioctl'
> long kvm_arch_vcpu_async_ioctl(struct file *filp,
> ^~~~~~~~~~~~~~~~~~~~~~~~~
> In file included from arch/s390/kvm/kvm-s390.c:20:0:
> include/linux/kvm_host.h:1267:20: note: previous definition of
> 'kvm_arch_vcpu_async_ioctl' was here
> static inline long kvm_arch_vcpu_async_ioctl(struct file *filp,
> ^~~~~~~~~~~~~~~~~~~~~~~~~
>
> vim +/kvm_arch_vcpu_async_ioctl +3728 arch/s390/kvm/kvm-s390.c
>
> 3727
> > 3728 long kvm_arch_vcpu_async_ioctl(struct file *filp,
> 3729 unsigned int ioctl, unsigned long arg)
> 3730 {
> 3731 struct kvm_vcpu *vcpu = filp->private_data;
> 3732 void __user *argp = (void __user *)arg;
> 3733
> 3734 switch (ioctl) {
> 3735 case KVM_S390_IRQ: {
> 3736 struct kvm_s390_irq s390irq;
> 3737
> 3738 if (copy_from_user(&s390irq, argp, sizeof(s390irq)))
> 3739 return -EFAULT;
> 3740 return kvm_s390_inject_vcpu(vcpu, &s390irq);
> 3741 }
> 3742 case KVM_S390_INTERRUPT: {
> 3743 struct kvm_s390_interrupt s390int;
> 3744 struct kvm_s390_irq s390irq;
> 3745
> 3746 if (copy_from_user(&s390int, argp, sizeof(s390int)))
> 3747 return -EFAULT;
> 3748 if (s390int_to_s390irq(&s390int, &s390irq))
> 3749 return -EINVAL;
> 3750 return kvm_s390_inject_vcpu(vcpu, &s390irq);
> 3751 }
> 3752 }
> 3753 return -ENOIOCTLCMD;
> 3754 }
> 3755
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation
>
