linux-kernel - Re: [PATCH 17/32] KVM: s390: expose the guest Adapter Interruption Source ID facility

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Message-ID: <4cd2dff3-7612-8b17-baa6-386cfc6501d6@linux.ibm.com>
Date:   Fri, 17 Dec 2021 16:06:04 +0100
From:   Christian Borntraeger <borntraeger@...ux.ibm.com>
To:     Matthew Rosato <mjrosato@...ux.ibm.com>, linux-s390@...r.kernel.org
Cc:     alex.williamson@...hat.com, cohuck@...hat.com,
        schnelle@...ux.ibm.com, farman@...ux.ibm.com, pmorel@...ux.ibm.com,
        hca@...ux.ibm.com, gor@...ux.ibm.com,
        gerald.schaefer@...ux.ibm.com, agordeev@...ux.ibm.com,
        frankja@...ux.ibm.com, david@...hat.com, imbrenda@...ux.ibm.com,
        vneethv@...ux.ibm.com, oberpar@...ux.ibm.com, freude@...ux.ibm.com,
        thuth@...hat.com, pasic@...ux.ibm.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 17/32] KVM: s390: expose the guest Adapter Interruption
 Source ID facility



Am 07.12.21 um 21:57 schrieb Matthew Rosato:
> This facility will be used to enable forwarding of PCI interrupts from
> firmware directly to guests.
> 
> Signed-off-by: Matthew Rosato <mjrosato@...ux.ibm.com>
> ---
>   arch/s390/kvm/kvm-s390.c | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
> index 09991d05c871..d44ca313a1b7 100644
> --- a/arch/s390/kvm/kvm-s390.c
> +++ b/arch/s390/kvm/kvm-s390.c
> @@ -2755,6 +2755,10 @@ int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
>   		set_kvm_facility(kvm->arch.model.fac_mask, 69);
>   		set_kvm_facility(kvm->arch.model.fac_list, 69);
>   	}
> +	if (sclp.has_aisii && test_facility(70)) {
> +		set_kvm_facility(kvm->arch.model.fac_mask, 70);
> +		set_kvm_facility(kvm->arch.model.fac_list, 70);
> +	}
>   
same as patch 16 (as well as 18)

>   	if (css_general_characteristics.aiv && test_facility(65))
>   		set_kvm_facility(kvm->arch.model.fac_mask, 65);
>