Re: [PATCH v12 4/7] KVM: stats: Support binary stats retrieval for a VCPU

[Paolo Bonzini <pbonzini@xxxxxxxxxx>]

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

Paolo