Re: [RFC 35/37] KVM: s390: Fix cpu reset local IRQ clearing

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On 24/10/2019 13.40, Janosch Frank wrote:
> The architecture states that we need to reset local IRQs for all CPU
> resets. Because the old reset interface did not support the normal CPU
> reset we never did that.
> 
> Now that we have a new interface, let's properly clear out local IRQs
> and let this commit be a reminder.
> 
> Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxx>
> ---
>  arch/s390/kvm/kvm-s390.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
> index ba6144fdb5d1..cc5feb67f145 100644
> --- a/arch/s390/kvm/kvm-s390.c
> +++ b/arch/s390/kvm/kvm-s390.c
> @@ -3485,6 +3485,8 @@ static int kvm_arch_vcpu_ioctl_reset(struct kvm_vcpu *vcpu,
>  		 * non-protected case.
>  		 */
>  		rc = 0;
> +		kvm_clear_async_pf_completion_queue(vcpu);
> +		kvm_s390_clear_local_irqs(vcpu);
>  		if (kvm_s390_pv_handle_cpu(vcpu)) {
>  			rc = uv_cmd_nodata(kvm_s390_pv_handle_cpu(vcpu),
>  					   UVC_CMD_CPU_RESET, &ret);
> 

I think you could squash this into patch 33/37 where you've introduced
the RESET_NORMAL (and adjust the patch description there).

 Thomas





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