linux-kernel - Re: [PATCH v4 06/21] KVM: arm64: Support SDEI_EVENT

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Date:   Tue, 11 Jan 2022 17:43:39 +0800
From:   Shannon Zhao <shannon.zhaosl@...il.com>
To:     Gavin Shan <gshan@...hat.com>, kvmarm@...ts.cs.columbia.edu
Cc:     maz@...nel.org, linux-kernel@...r.kernel.org,
        Jonathan.Cameron@...wei.com, pbonzini@...hat.com, will@...nel.org
Subject: Re: [PATCH v4 06/21] KVM: arm64: Support SDEI_EVENT_CONTEXT hypercall



On 2021/8/15 8:13, Gavin Shan wrote:
> +static unsigned long kvm_sdei_hypercall_context(struct kvm_vcpu *vcpu)
> +{
> +	struct kvm *kvm = vcpu->kvm;
> +	struct kvm_sdei_kvm *ksdei = kvm->arch.sdei;
> +	struct kvm_sdei_vcpu *vsdei = vcpu->arch.sdei;
> +	struct kvm_sdei_vcpu_regs *regs;
> +	unsigned long index = smccc_get_arg1(vcpu);
> +	unsigned long ret = SDEI_SUCCESS;
> +
> +	/* Sanity check */
> +	if (!(ksdei && vsdei)) {
> +		ret = SDEI_NOT_SUPPORTED;
> +		goto out;
> +	}
Maybe we could move these common sanity check codes to 
kvm_sdei_hypercall to save some lines.

Thanks,
Shannon