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Subject: Re: [PATCH v4 20/21] KVM: arm64: Export SDEI capability
To:     Gavin Shan <gshan@redhat.com>, kvmarm@lists.cs.columbia.edu
Cc:     maz@kernel.org, linux-kernel@vger.kernel.org,
        Jonathan.Cameron@huawei.com, pbonzini@redhat.com, will@kernel.org
References: <20210815001352.81927-1-gshan@redhat.com>
 <20210815001352.81927-21-gshan@redhat.com>
From:   Eric Auger <eauger@redhat.com>
Message-ID: <90fd5226-0889-6a7c-1586-732015943863@redhat.com>
Date:   Wed, 10 Nov 2021 14:55:10 +0100
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On 8/15/21 2:13 AM, Gavin Shan wrote:
> The SDEI functionality is ready to be exported so far. This adds
> new capability (KVM_CAP_ARM_SDEI) and exports it.

Need to be documented in
kvm/api.rst
as the rest of the API

Eric
> 
> Signed-off-by: Gavin Shan <gshan@redhat.com>
> ---
>  arch/arm64/kvm/arm.c     | 3 +++
>  include/uapi/linux/kvm.h | 1 +
>  2 files changed, 4 insertions(+)
> 
> diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
> index 215cdbeb272a..7d9bbc888ae5 100644
> --- a/arch/arm64/kvm/arm.c
> +++ b/arch/arm64/kvm/arm.c
> @@ -278,6 +278,9 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
>  	case KVM_CAP_ARM_PTRAUTH_GENERIC:
>  		r = system_has_full_ptr_auth();
>  		break;
> +	case KVM_CAP_ARM_SDEI:
> +		r = 1;
> +		break;
>  	default:
>  		r = 0;
>  	}
> diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
> index 8cf41fd4bf86..2aa748fd89c7 100644
> --- a/include/uapi/linux/kvm.h
> +++ b/include/uapi/linux/kvm.h
> @@ -1112,6 +1112,7 @@ struct kvm_ppc_resize_hpt {
>  #define KVM_CAP_BINARY_STATS_FD 203
>  #define KVM_CAP_EXIT_ON_EMULATION_FAILURE 204
>  #define KVM_CAP_ARM_MTE 205
> +#define KVM_CAP_ARM_SDEI 206
>  
>  #ifdef KVM_CAP_IRQ_ROUTING
>  
> 
Eric