Carsten Otte wrote:
>  
>  /* for KVM_RUN, returned by mmap(vcpu_fd, offset=0) */
>  struct kvm_run {
> @@ -138,6 +139,14 @@ struct kvm_run {
>                       __u32 is_write;
>                       __u32 pad;
>               } tpr_access;
> +             /* KVM_EXIT_S390_SIEIC */
> +             struct {
> +                     __u8 icptcode;
> +                     __u64 mask; /* psw upper half */
> +                     __u64 addr; /* psw lower half */
> +                     __u16 ipa;
> +                     __u32 ipb;
> +             } s390_sieic;
>               /* Fix the size of the union. */
>               char padding[256];
>       };
>
>   

Do you support 32-bit userspace on 64-bit kernel?  If so, this is likely 
badly aligned.

-- 
Any sufficiently difficult bug is indistinguishable from a feature.


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