From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Zyngier Subject: [PATCH v5 07/26] KVM: arm/arm64: vITS: Add a helper to update the affinity of an LPI Date: Fri, 27 Oct 2017 15:28:36 +0100 Message-ID: <20171027142855.21584-8-marc.zyngier@arm.com> References: <20171027142855.21584-1-marc.zyngier@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 8FB8349D15 for ; Fri, 27 Oct 2017 10:28:04 -0400 (EDT) Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id gUw3jCqlbcsU for ; Fri, 27 Oct 2017 10:28:03 -0400 (EDT) Received: from foss.arm.com (foss.arm.com [217.140.101.70]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 8A5EB49D23 for ; Fri, 27 Oct 2017 10:28:03 -0400 (EDT) In-Reply-To: <20171027142855.21584-1-marc.zyngier@arm.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Andre Przywara List-Id: kvmarm@lists.cs.columbia.edu In order help integrating the vITS code with GICv4, let's add a new helper that deals with updating the affinity of an LPI, which will later be augmented with super duper extra GICv4 goodness. Reviewed-by: Christoffer Dall Signed-off-by: Marc Zyngier --- virt/kvm/arm/vgic/vgic-its.c | 20 +++++++++++--------- 1 file changed, 11 insertions(+), 9 deletions(-) diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c index 475dffd0a44c..8ee03f1e89fc 100644 --- a/virt/kvm/arm/vgic/vgic-its.c +++ b/virt/kvm/arm/vgic/vgic-its.c @@ -335,6 +335,15 @@ static int vgic_copy_lpi_list(struct kvm_vcpu *vcpu, u32 **intid_ptr) return i; } +static int update_affinity(struct vgic_irq *irq, struct kvm_vcpu *vcpu) +{ + spin_lock(&irq->irq_lock); + irq->target_vcpu = vcpu; + spin_unlock(&irq->irq_lock); + + return 0; +} + /* * Promotes the ITS view of affinity of an ITTE (which redistributor this LPI * is targeting) to the VGIC's view, which deals with target VCPUs. @@ -349,10 +358,7 @@ static void update_affinity_ite(struct kvm *kvm, struct its_ite *ite) return; vcpu = kvm_get_vcpu(kvm, ite->collection->target_addr); - - spin_lock(&ite->irq->irq_lock); - ite->irq->target_vcpu = vcpu; - spin_unlock(&ite->irq->irq_lock); + update_affinity(ite->irq, vcpu); } /* @@ -693,11 +699,7 @@ static int vgic_its_cmd_handle_movi(struct kvm *kvm, struct vgic_its *its, ite->collection = collection; vcpu = kvm_get_vcpu(kvm, collection->target_addr); - spin_lock(&ite->irq->irq_lock); - ite->irq->target_vcpu = vcpu; - spin_unlock(&ite->irq->irq_lock); - - return 0; + return update_affinity(ite->irq, vcpu); } /* -- 2.11.0