On Mon, Jun 21, 2021 at 11:46 AM Paolo Bonzini [off-list ref] wrote:

On 19/06/21 00:27, Jing Zhang wrote:

quoted

+     struct kvm_vcpu_stat stat;
      struct kvm_dirty_ring dirty_ring;
+     char stats_id[KVM_STATS_NAME_SIZE];

I think stats_id needs to be part of the usercopy region too.

You can also use

offsetofend(struct kvm_vcpu, stats_id) - offsetof(struct kvm_vcpu, arch)

to compute the size.

Sure! Will do.

Paolo

Thanks,
Jing