linux-kernel - Re: [PATCH v5 05/15] KVM: s390: unify pending_irqs() and pending_irqs_no

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Date:   Thu, 20 Dec 2018 11:09:54 +0100
From:   Michael Mueller <mimu@...ux.ibm.com>
To:     KVM Mailing List <kvm@...r.kernel.org>
Cc:     Linux-S390 Mailing List <linux-s390@...r.kernel.org>,
        linux-kernel@...r.kernel.org,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        David Hildenbrand <david@...hat.com>,
        Cornelia Huck <cohuck@...hat.com>,
        Halil Pasic <pasic@...ux.ibm.com>,
        Pierre Morel <pmorel@...ux.ibm.com>
Subject: Re: [PATCH v5 05/15] KVM: s390: unify pending_irqs() and
 pending_irqs_no_gisa()



On 19.12.18 20:17, Michael Mueller wrote:
>   
> -static inline unsigned long pending_irqs(struct kvm_vcpu *vcpu)
> -{
> -	return pending_irqs_no_gisa(vcpu) |
> -		kvm_s390_gisa_get_ipm(vcpu->kvm->arch.gisa) << IRQ_PEND_IO_ISC_7;
> +	if (irq_flags & IRQ_FLAG_LOCAL)
> +		pending_irqs |= vcpu->arch.local_int.pending_irqs;
> +	if (irq_flags & IRQ_FLAG_FLOATING)
> +		pending_irqs |= vcpu->kvm->arch.float_int.pending_irqs;
> +	if (irq_flags & IRQ_FLAG_GISA)


Fix crash under vsie:

                 pending_irqs |= vcpu->kvm->arch.float_int.pending_irqs;
-       if (irq_flags & IRQ_FLAG_GISA)
+       if (vcpu->kvm->arch.gisa && irq_flags & IRQ_FLAG_GISA)
                 pending_irqs |= get_ipm(vcpu->kvm->arch.gisa, irq_flags)


> +		pending_irqs |= kvm_s390_gisa_get_ipm(vcpu->kvm->arch.gisa) <<
> +			IRQ_PEND_IO_ISC_7;
> +	return pending_irqs;
>   }

-- 
Mit freundlichen Grüßen / Kind regards
Michael Müller

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