linux-kernel - Re: [PATCH v8 10/13] KVM: Update Posted-Interrupts Descriptor when vCPU is preempted

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Date:	Wed, 16 Sep 2015 11:29:04 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Feng Wu <feng.wu@...el.com>, alex.williamson@...hat.com,
	joro@...tes.org, mtosatti@...hat.com
Cc:	eric.auger@...aro.org, kvm@...r.kernel.org,
	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 10/13] KVM: Update Posted-Interrupts Descriptor when
 vCPU is preempted



On 16/09/2015 10:50, Feng Wu wrote:
> +
> +	if (!irq_remapping_cap(IRQ_POSTING_CAP) ||
> +		(!kvm_arch_has_assigned_device(vcpu->kvm)))
> +		return;
> +

Better:

	if (!arch_has_assigned_device(vcpu->kvm)) ||
	    !irq_remapping_cap(IRQ_POSTING_CAP))
		return;

(In the future we might add a static_key here).

Paolo
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