Re: [PATCH v2 7/9] KVM: s390: Fix kvm_s390_clear_pv_state()

[Christoph Schlameuss]

On Wed Aug 12, 2026 at 12:44 PM CEST, Claudio Imbrenda wrote:
> kvm_s390_clear_pv_state() needs to also clear the dumping flag, to
> allow the protected VM to be started again (as non-protected, with all
> protected state safely destroyed) after a forced reboot while a
> protected dump was ongoing and not completed.
>
> Fixes: e40df9efd68a ("KVM: s390: pv: clear the state without memset")
> Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
> Reviewed-by: Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>

Acked-by: Christoph Schlameuss <schlameuss@xxxxxxxxxxxxx>

> ---
>  arch/s390/kvm/pv.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
> diff --git a/arch/s390/kvm/pv.c b/arch/s390/kvm/pv.c
> index b02e0159d3cd..98a9a57f71b9 100644
> --- a/arch/s390/kvm/pv.c
> +++ b/arch/s390/kvm/pv.c
> @@ -242,6 +242,10 @@ static void kvm_s390_clear_pv_state(struct kvm *kvm)
>  	kvm->arch.pv.guest_len = 0;
>  	kvm->arch.pv.stor_base = 0;
>  	kvm->arch.pv.stor_var = NULL;
> +	if (kvm->arch.pv.dumping) {
> +		kvm_s390_vcpu_unblock_all(kvm);
> +		kvm->arch.pv.dumping = false;
> +	}
>  }
>  
>  static void kvm_s390_pv_dispose_cpu(struct kvm_vcpu *vcpu, bool free_stor_base)